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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-3.1.2/src/mpfr-impl.h')
| -rw-r--r-- | Build/source/libs/mpfr/mpfr-3.1.2/src/mpfr-impl.h | 1923 |
1 files changed, 1923 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-3.1.2/src/mpfr-impl.h b/Build/source/libs/mpfr/mpfr-3.1.2/src/mpfr-impl.h new file mode 100644 index 00000000000..bd59e1a5a20 --- /dev/null +++ b/Build/source/libs/mpfr/mpfr-3.1.2/src/mpfr-impl.h @@ -0,0 +1,1923 @@ +/* Utilities for MPFR developers, not exported. + +Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. +Contributed by the AriC and Caramel projects, INRIA. + +This file is part of the GNU MPFR Library. + +The GNU MPFR Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 3 of the License, or (at your +option) any later version. + +The GNU MPFR Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public +License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see +http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc., +51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#ifndef __MPFR_IMPL_H__ +#define __MPFR_IMPL_H__ + +/* Include MPFR 'config.h' before ANY system headers */ +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +/* Let's include some standard headers unconditionally as they are + already needed by several source files or when some options are + enabled/disabled, and it is easy to forget them (some configure + options may hide the error). + Note: If some source file must not have such a header included + (which is very unlikely and probably means something broken in + this source file), we should do that with some macro (that would + also force to disable incompatible features). */ +#if defined (__cplusplus) +#include <cstdio> +#include <cstring> +#else +#include <stdio.h> +#include <string.h> +#endif +#include <limits.h> + +#if _MPFR_EXP_FORMAT == 4 +/* mpfr_exp_t will be defined as intmax_t */ +# include "mpfr-intmax.h" +#endif + +/* Check if we are inside a build of MPFR or inside the test suite. + This is needed in mpfr.h to export or import the functions. + It matters only for Windows DLL */ +#ifndef __MPFR_TEST_H__ +# define __MPFR_WITHIN_MPFR 1 +#endif + +/****************************************************** + ****************** Include files ********************* + ******************************************************/ + +#ifdef MPFR_HAVE_GMP_IMPL /* Build with gmp internals*/ + +# ifndef __GMP_H__ +# include "gmp.h" +# endif +# ifndef __GMP_IMPL_H__ +# include "gmp-impl.h" +# endif +# ifdef MPFR_NEED_LONGLONG_H +# include "longlong.h" +# endif +# ifndef __MPFR_H +# include "mpfr.h" +# endif + +#else /* Build without gmp internals */ + +# ifndef __GMP_H__ +# include "gmp.h" +# endif +# ifndef __MPFR_H +# include "mpfr.h" +# endif +# ifndef __GMPFR_GMP_H__ +# include "mpfr-gmp.h" +# endif +# ifdef MPFR_NEED_LONGLONG_H +# define LONGLONG_STANDALONE +# include "mpfr-longlong.h" +# endif + +#endif +#undef MPFR_NEED_LONGLONG_H + +/* If a mpn_sqr_n macro is not defined, use mpn_mul. GMP 4.x defines a + mpn_sqr_n macro in gmp-impl.h (and this macro disappeared in GMP 5), + so that GMP's macro can only be used when MPFR has been configured + with --with-gmp-build (and only with GMP 4.x). */ +#ifndef mpn_sqr_n +# define mpn_sqr_n(dst,src,n) mpn_mul((dst),(src),(n),(src),(n)) +#endif + +/* For the definition of MPFR_THREAD_ATTR. GCC/ICC detection macros are + no longer used, as they sometimes gave incorrect information about + the support of thread-local variables. A configure check is now done. + If the use of detection macros is needed in the future, this could be + moved below (after the detection macros are defined). */ +#include "mpfr-thread.h" + + +/****************************************************** + ***************** Detection macros ******************* + ******************************************************/ + +/* Macros to detect STDC, GCC, GLIBC, GMP and ICC version */ +#if defined(__STDC_VERSION__) +# define __MPFR_STDC(version) (__STDC_VERSION__>=(version)) +#elif defined(__STDC__) +# define __MPFR_STDC(version) (0 == (version)) +#else +# define __MPFR_STDC(version) 0 +#endif + +#if defined(_WIN32) +/* Under MS Windows (e.g. with VS2008 or VS2010), Intel's compiler doesn't + support/enable extensions like the ones seen under GNU/Linux. + https://sympa.inria.fr/sympa/arc/mpfr/2011-02/msg00032.html */ +# define __MPFR_ICC(a,b,c) 0 +#elif defined(__ICC) +# define __MPFR_ICC(a,b,c) (__ICC >= (a)*100+(b)*10+(c)) +#elif defined(__INTEL_COMPILER) +# define __MPFR_ICC(a,b,c) (__INTEL_COMPILER >= (a)*100+(b)*10+(c)) +#else +# define __MPFR_ICC(a,b,c) 0 +#endif + +#if defined(__GNUC__) && defined(__GNUC_MINOR__) && ! __MPFR_ICC(0,0,0) +# define __MPFR_GNUC(a,i) \ + (MPFR_VERSION_NUM(__GNUC__,__GNUC_MINOR__,0) >= MPFR_VERSION_NUM(a,i,0)) +#else +# define __MPFR_GNUC(a,i) 0 +#endif + +#if defined(__GLIBC__) && defined(__GLIBC_MINOR__) +# define __MPFR_GLIBC(a,i) \ + (MPFR_VERSION_NUM(__GLIBC__,__GLIBC_MINOR__,0) >= MPFR_VERSION_NUM(a,i,0)) +#else +# define __MPFR_GLIBC(a,i) 0 +#endif + +#if defined(__GNU_MP_VERSION) && \ + defined(__GNU_MP_VERSION_MINOR) && \ + defined(__GNU_MP_VERSION_PATCHLEVEL) +# define __MPFR_GMP(a,b,c) \ + (MPFR_VERSION_NUM(__GNU_MP_VERSION,__GNU_MP_VERSION_MINOR,__GNU_MP_VERSION_PATCHLEVEL) >= MPFR_VERSION_NUM(a,b,c)) +#else +# define __MPFR_GMP(a,b,c) 0 +#endif + + + +/****************************************************** + ************* GMP Basic Pointer Types **************** + ******************************************************/ + +typedef mp_limb_t *mpfr_limb_ptr; +typedef __gmp_const mp_limb_t *mpfr_limb_srcptr; + + + +/****************************************************** + ****************** (U)INTMAX_MAX ********************* + ******************************************************/ + +/* Let's try to fix UINTMAX_MAX and INTMAX_MAX if these macros don't work + (e.g. with gcc -ansi -pedantic-errors in 32-bit mode under GNU/Linux), + see <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=582698>. */ +#ifdef _MPFR_H_HAVE_INTMAX_T +# ifdef MPFR_HAVE_INTMAX_MAX +# define MPFR_UINTMAX_MAX UINTMAX_MAX +# define MPFR_INTMAX_MAX INTMAX_MAX +# define MPFR_INTMAX_MIN INTMAX_MIN +# else +# define MPFR_UINTMAX_MAX ((uintmax_t) -1) +# define MPFR_INTMAX_MAX ((intmax_t) (MPFR_UINTMAX_MAX >> 1)) +# define MPFR_INTMAX_MIN (INT_MIN + INT_MAX - MPFR_INTMAX_MAX) +# endif +#endif + + + +/****************************************************** + ******************** Check GMP *********************** + ******************************************************/ + +#if !__MPFR_GMP(4,1,0) +# error "GMP 4.1.0 or newer needed" +#endif + +#if GMP_NAIL_BITS != 0 +# error "MPFR doesn't support nonzero values of GMP_NAIL_BITS" +#endif + +#if (GMP_NUMB_BITS<32) || (GMP_NUMB_BITS & (GMP_NUMB_BITS - 1)) +# error "GMP_NUMB_BITS must be a power of 2, and >= 32" +#endif + +#if GMP_NUMB_BITS == 16 +# define MPFR_LOG2_GMP_NUMB_BITS 4 +#elif GMP_NUMB_BITS == 32 +# define MPFR_LOG2_GMP_NUMB_BITS 5 +#elif GMP_NUMB_BITS == 64 +# define MPFR_LOG2_GMP_NUMB_BITS 6 +#elif GMP_NUMB_BITS == 128 +# define MPFR_LOG2_GMP_NUMB_BITS 7 +#elif GMP_NUMB_BITS == 256 +# define MPFR_LOG2_GMP_NUMB_BITS 8 +#else +# error "Can't compute log2(GMP_NUMB_BITS)" +#endif + +#if __MPFR_GNUC(3,0) || __MPFR_ICC(8,1,0) +/* For the future: N1478: Supporting the 'noreturn' property in C1x + http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1478.htm */ +# define MPFR_NORETURN_ATTR __attribute__ ((noreturn)) +# define MPFR_CONST_ATTR __attribute__ ((const)) +#else +# define MPFR_NORETURN_ATTR +# define MPFR_CONST_ATTR +#endif + +/****************************************************** + ************* Global Internal Variables ************** + ******************************************************/ + +/* Cache struct */ +struct __gmpfr_cache_s { + mpfr_t x; + int inexact; + int (*func)(mpfr_ptr, mpfr_rnd_t); +}; +typedef struct __gmpfr_cache_s mpfr_cache_t[1]; +typedef struct __gmpfr_cache_s *mpfr_cache_ptr; + +#if defined (__cplusplus) +extern "C" { +#endif + +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR unsigned int __gmpfr_flags; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_exp_t __gmpfr_emin; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_exp_t __gmpfr_emax; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_prec_t __gmpfr_default_fp_bit_precision; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_rnd_t __gmpfr_default_rounding_mode; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_euler; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_catalan; + +#ifndef MPFR_USE_LOGGING +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_pi; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_cache_const_log2; +#else +/* Two constants are used by the logging functions (via mpfr_fprintf, + then mpfr_log, for the base conversion): pi and log(2). Since the + mpfr_cache function isn't re-entrant when working on the same cache, + we need to define two caches for each constant. */ +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_normal_pi; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_normal_log2; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_logging_pi; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_t __gmpfr_logging_log2; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_ptr __gmpfr_cache_const_pi; +__MPFR_DECLSPEC extern MPFR_THREAD_ATTR mpfr_cache_ptr __gmpfr_cache_const_log2; +#endif + +#define BASE_MAX 62 +__MPFR_DECLSPEC extern const __mpfr_struct __gmpfr_l2b[BASE_MAX-1][2]; + +/* Note: do not use the following values when they can be outside the + current exponent range, e.g. when the exponent range has not been + extended yet; under such a condition, they can be used only in + mpfr_cmpabs. */ +__MPFR_DECLSPEC extern const mpfr_t __gmpfr_one; +__MPFR_DECLSPEC extern const mpfr_t __gmpfr_two; +__MPFR_DECLSPEC extern const mpfr_t __gmpfr_four; + + +#if defined (__cplusplus) + } +#endif + +/* Flags of __gmpfr_flags */ +#define MPFR_FLAGS_UNDERFLOW 1 +#define MPFR_FLAGS_OVERFLOW 2 +#define MPFR_FLAGS_NAN 4 +#define MPFR_FLAGS_INEXACT 8 +#define MPFR_FLAGS_ERANGE 16 +#define MPFR_FLAGS_DIVBY0 32 +#define MPFR_FLAGS_ALL 63 + +/* Replace some common functions for direct access to the global vars */ +#define mpfr_get_emin() (__gmpfr_emin + 0) +#define mpfr_get_emax() (__gmpfr_emax + 0) +#define mpfr_get_default_rounding_mode() (__gmpfr_default_rounding_mode + 0) +#define mpfr_get_default_prec() (__gmpfr_default_fp_bit_precision + 0) + +#define mpfr_clear_flags() \ + ((void) (__gmpfr_flags = 0)) +#define mpfr_clear_underflow() \ + ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_UNDERFLOW)) +#define mpfr_clear_overflow() \ + ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_OVERFLOW)) +#define mpfr_clear_nanflag() \ + ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_NAN)) +#define mpfr_clear_inexflag() \ + ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_INEXACT)) +#define mpfr_clear_erangeflag() \ + ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_ERANGE)) +#define mpfr_clear_divby0() \ + ((void) (__gmpfr_flags &= MPFR_FLAGS_ALL ^ MPFR_FLAGS_DIVBY0)) +#define mpfr_underflow_p() \ + ((int) (__gmpfr_flags & MPFR_FLAGS_UNDERFLOW)) +#define mpfr_overflow_p() \ + ((int) (__gmpfr_flags & MPFR_FLAGS_OVERFLOW)) +#define mpfr_nanflag_p() \ + ((int) (__gmpfr_flags & MPFR_FLAGS_NAN)) +#define mpfr_inexflag_p() \ + ((int) (__gmpfr_flags & MPFR_FLAGS_INEXACT)) +#define mpfr_erangeflag_p() \ + ((int) (__gmpfr_flags & MPFR_FLAGS_ERANGE)) +#define mpfr_divby0_p() \ + ((int) (__gmpfr_flags & MPFR_FLAGS_DIVBY0)) + +/* Testing an exception flag correctly is tricky. There are mainly two + pitfalls: First, one needs to remember to clear the corresponding + flag, in case it was set before the function call or during some + intermediate computations (in practice, one can clear all the flags). + Secondly, one needs to test the flag early enough, i.e. before it + can be modified by another function. Moreover, it is quite difficult + (if not impossible) to reliably check problems with "make check". To + avoid these pitfalls, it is recommended to use the following macros. + Other use of the exception-flag predicate functions/macros will be + detected by mpfrlint. + Note: _op can be either a statement or an expression. + MPFR_BLOCK_EXCEP should be used only inside a block; it is useful to + detect some exception in order to exit the block as soon as possible. */ +#define MPFR_BLOCK_DECL(_flags) unsigned int _flags +/* The (void) (_flags) makes sure that _flags is read at least once (it + makes sense to use MPFR_BLOCK while _flags will never be read in the + source, so that we wish to avoid the corresponding warning). */ +#define MPFR_BLOCK(_flags,_op) \ + do \ + { \ + mpfr_clear_flags (); \ + _op; \ + (_flags) = __gmpfr_flags; \ + (void) (_flags); \ + } \ + while (0) +#define MPFR_BLOCK_TEST(_flags,_f) MPFR_UNLIKELY ((_flags) & (_f)) +#define MPFR_BLOCK_EXCEP (__gmpfr_flags & (MPFR_FLAGS_UNDERFLOW | \ + MPFR_FLAGS_OVERFLOW | \ + MPFR_FLAGS_DIVBY0 | \ + MPFR_FLAGS_NAN)) +/* Let's use a MPFR_ prefix, because e.g. OVERFLOW is defined by glibc's + math.h, though this is not a reserved identifier! */ +#define MPFR_UNDERFLOW(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_UNDERFLOW) +#define MPFR_OVERFLOW(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_OVERFLOW) +#define MPFR_NANFLAG(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_NAN) +#define MPFR_INEXFLAG(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_INEXACT) +#define MPFR_ERANGEFLAG(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_ERANGE) +#define MPFR_DIVBY0(_flags) MPFR_BLOCK_TEST (_flags, MPFR_FLAGS_DIVBY0) + + +/****************************************************** + ******************** Assertions ********************** + ******************************************************/ + +/* Compile with -DWANT_ASSERT to check all assert statements */ + +/* Note: do not use GMP macros ASSERT_ALWAYS and ASSERT as they are not + expressions, and as a consequence, they cannot be used in a for(), + with a comma operator and so on. */ + +/* MPFR_ASSERTN(expr): assertions that should always be checked */ +#define MPFR_ASSERTN(expr) \ + ((void) ((MPFR_UNLIKELY(expr)) || MPFR_UNLIKELY( (ASSERT_FAIL(expr),0) ))) + +/* MPFR_ASSERTD(expr): assertions that should be checked when testing */ +#ifdef WANT_ASSERT +# define MPFR_EXP_CHECK 1 +# define MPFR_ASSERTD(expr) MPFR_ASSERTN (expr) +#else +# define MPFR_ASSERTD(expr) ((void) 0) +#endif + +/* Code to deal with impossible + WARNING: It doesn't use do { } while (0) for Insure++*/ +#define MPFR_RET_NEVER_GO_HERE() {MPFR_ASSERTN(0); return 0;} + + +/****************************************************** + ******************** Warnings ************************ + ******************************************************/ + +/* MPFR_WARNING is no longer useful, but let's keep the macro in case + it needs to be used again in the future. */ + +#ifdef MPFR_USE_WARNINGS +# include <stdlib.h> +# define MPFR_WARNING(W) \ + do \ + { \ + char *q = getenv ("MPFR_QUIET"); \ + if (q == NULL || *q == 0) \ + fprintf (stderr, "MPFR: %s\n", W); \ + } \ + while (0) +#else +# define MPFR_WARNING(W) ((void) 0) +#endif + + +/****************************************************** + ****************** double macros ********************* + ******************************************************/ + +/* Precision used for lower precision computations */ +#define MPFR_SMALL_PRECISION 32 + +/* Definition of constants */ +#define LOG2 0.69314718055994528622 /* log(2) rounded to zero on 53 bits */ +#define ALPHA 4.3191365662914471407 /* a+2 = a*log(a), rounded to +infinity */ +#define EXPM1 0.36787944117144227851 /* exp(-1), rounded to zero */ + +/* MPFR_DOUBLE_SPEC = 1 if the C type 'double' corresponds to IEEE-754 + double precision, 0 if it doesn't, and undefined if one doesn't know. + On all the tested machines, MPFR_DOUBLE_SPEC = 1. To have this macro + defined here, #include <float.h> is needed. If need be, other values + could be defined for other specs (once they are known). */ +#if !defined(MPFR_DOUBLE_SPEC) && defined(FLT_RADIX) && \ + defined(DBL_MANT_DIG) && defined(DBL_MIN_EXP) && defined(DBL_MAX_EXP) +# if FLT_RADIX == 2 && DBL_MANT_DIG == 53 && \ + DBL_MIN_EXP == -1021 && DBL_MAX_EXP == 1024 +# define MPFR_DOUBLE_SPEC 1 +# else +# define MPFR_DOUBLE_SPEC 0 +# endif +#endif + +/* Debug non IEEE floats */ +#ifdef XDEBUG +# undef _GMP_IEEE_FLOATS +#endif +#ifndef _GMP_IEEE_FLOATS +# define _GMP_IEEE_FLOATS 0 +#endif + +#ifndef IEEE_DBL_MANT_DIG +#define IEEE_DBL_MANT_DIG 53 +#endif +#define MPFR_LIMBS_PER_DOUBLE ((IEEE_DBL_MANT_DIG-1)/GMP_NUMB_BITS+1) + +#ifndef IEEE_FLT_MANT_DIG +#define IEEE_FLT_MANT_DIG 24 +#endif +#define MPFR_LIMBS_PER_FLT ((IEEE_FLT_MANT_DIG-1)/GMP_NUMB_BITS+1) + +/* Visual C++ doesn't support +1.0/0.0, -1.0/0.0 and 0.0/0.0 + at compile time. */ +#if defined(_MSC_VER) && defined(_WIN32) && (_MSC_VER >= 1200) +static double double_zero = 0.0; +# define DBL_NAN (double_zero/double_zero) +# define DBL_POS_INF ((double) 1.0/double_zero) +# define DBL_NEG_INF ((double)-1.0/double_zero) +# define DBL_NEG_ZERO (-double_zero) +#else +# define DBL_POS_INF ((double) 1.0/0.0) +# define DBL_NEG_INF ((double)-1.0/0.0) +# define DBL_NAN ((double) 0.0/0.0) +# define DBL_NEG_ZERO (-0.0) +#endif + +/* Note: In the past, there was specific code for _GMP_IEEE_FLOATS, which + was based on NaN and Inf memory representations. This code was breaking + the aliasing rules (see ISO C99, 6.5#6 and 6.5#7 on the effective type) + and for this reason it did not behave correctly with GCC 4.5.0 20091119. + The code needed a memory transfer and was probably not better than the + macros below with a good compiler (a fix based on the NaN / Inf memory + representation would be even worse due to C limitations), and this code + could be selected only when MPFR was built with --with-gmp-build, thus + introducing a difference (bad for maintaining/testing MPFR); therefore + it has been removed. The old code required that the argument x be an + lvalue of type double. We still require that, in case one would need + to change the macros below, e.g. for some broken compiler. But the + LVALUE(x) condition could be removed if really necessary. */ +/* Below, the &(x) == &(x) || &(x) != &(x) allows to make sure that x + is a lvalue without (probably) any warning from the compiler. The + &(x) != &(x) is needed to avoid a failure under Mac OS X 10.4.11 + (with Xcode 2.4.1, i.e. the latest one). */ +#define LVALUE(x) (&(x) == &(x) || &(x) != &(x)) +#define DOUBLE_ISINF(x) (LVALUE(x) && ((x) > DBL_MAX || (x) < -DBL_MAX)) +#ifdef MPFR_NANISNAN +/* Avoid MIPSpro / IRIX64 / gcc -ffast-math (incorrect) optimizations. + The + must not be replaced by a ||. With gcc -ffast-math, NaN is + regarded as a positive number or something like that; the second + test catches this case. */ +# define DOUBLE_ISNAN(x) \ + (LVALUE(x) && !((((x) >= 0.0) + ((x) <= 0.0)) && -(x)*(x) <= 0.0)) +#else +# define DOUBLE_ISNAN(x) (LVALUE(x) && (x) != (x)) +#endif + +/****************************************************** + *************** Long double macros ******************* + ******************************************************/ + +/* We try to get the exact value of the precision of long double + (provided by the implementation) in order to provide correct + rounding in this case (not guaranteed if the C implementation + does not have an adequate long double arithmetic). Note that + it may be lower than the precision of some numbers that can + be represented in a long double; e.g. on FreeBSD/x86, it is + 53 because the processor is configured to round in double + precision (even when using the long double type -- this is a + limitation of the x87 arithmetic), and on Mac OS X, it is 106 + because the implementation is a double-double arithmetic. + Otherwise (e.g. in base 10), we get an upper bound of the + precision, and correct rounding isn't currently provided. +*/ +#if defined(LDBL_MANT_DIG) && FLT_RADIX == 2 +# define MPFR_LDBL_MANT_DIG LDBL_MANT_DIG +#else +# define MPFR_LDBL_MANT_DIG \ + (sizeof(long double)*GMP_NUMB_BITS/sizeof(mp_limb_t)) +#endif +#define MPFR_LIMBS_PER_LONG_DOUBLE \ + ((sizeof(long double)-1)/sizeof(mp_limb_t)+1) + +/* LONGDOUBLE_NAN_ACTION executes the code "action" if x is a NaN. */ + +/* On hppa2.0n-hp-hpux10 with the unbundled HP cc, the test x!=x on a NaN + has been seen false, meaning NaNs are not detected. This seemed to + happen only after other comparisons, not sure what's really going on. In + any case we can pick apart the bytes to identify a NaN. */ +#ifdef HAVE_LDOUBLE_IEEE_QUAD_BIG +# define LONGDOUBLE_NAN_ACTION(x, action) \ + do { \ + union { \ + long double ld; \ + struct { \ + unsigned int sign : 1; \ + unsigned int exp : 15; \ + unsigned int man3 : 16; \ + unsigned int man2 : 32; \ + unsigned int man1 : 32; \ + unsigned int man0 : 32; \ + } s; \ + } u; \ + u.ld = (x); \ + if (u.s.exp == 0x7FFFL \ + && (u.s.man0 | u.s.man1 | u.s.man2 | u.s.man3) != 0) \ + { action; } \ + } while (0) +#endif + +#ifdef HAVE_LDOUBLE_IEEE_QUAD_LITTLE +# define LONGDOUBLE_NAN_ACTION(x, action) \ + do { \ + union { \ + long double ld; \ + struct { \ + unsigned int man0 : 32; \ + unsigned int man1 : 32; \ + unsigned int man2 : 32; \ + unsigned int man3 : 16; \ + unsigned int exp : 15; \ + unsigned int sign : 1; \ + } s; \ + } u; \ + u.ld = (x); \ + if (u.s.exp == 0x7FFFL \ + && (u.s.man0 | u.s.man1 | u.s.man2 | u.s.man3) != 0) \ + { action; } \ + } while (0) +#endif + +/* Under IEEE rules, NaN is not equal to anything, including itself. + "volatile" here stops "cc" on mips64-sgi-irix6.5 from optimizing away + x!=x. */ +#ifndef LONGDOUBLE_NAN_ACTION +# define LONGDOUBLE_NAN_ACTION(x, action) \ + do { \ + volatile long double __x = LONGDOUBLE_VOLATILE (x); \ + if ((x) != __x) \ + { action; } \ + } while (0) +# define WANT_LONGDOUBLE_VOLATILE 1 +#endif + +/* If we don't have a proper "volatile" then volatile is #defined to empty, + in this case call through an external function to stop the compiler + optimizing anything. */ +#ifdef WANT_LONGDOUBLE_VOLATILE +# ifdef volatile +__MPFR_DECLSPEC long double __gmpfr_longdouble_volatile _MPFR_PROTO ((long double)) MPFR_CONST_ATTR; +# define LONGDOUBLE_VOLATILE(x) (__gmpfr_longdouble_volatile (x)) +# define WANT_GMPFR_LONGDOUBLE_VOLATILE 1 +# else +# define LONGDOUBLE_VOLATILE(x) (x) +# endif +#endif + +/* Some special case for IEEE_EXT Litle Endian */ +#if HAVE_LDOUBLE_IEEE_EXT_LITTLE + +typedef union { + long double ld; + struct { + unsigned int manl : 32; + unsigned int manh : 32; + unsigned int expl : 8 ; + unsigned int exph : 7; + unsigned int sign : 1; + } s; +} mpfr_long_double_t; + +/* #undef MPFR_LDBL_MANT_DIG */ +#undef MPFR_LIMBS_PER_LONG_DOUBLE +/* #define MPFR_LDBL_MANT_DIG 64 */ +#define MPFR_LIMBS_PER_LONG_DOUBLE ((64-1)/GMP_NUMB_BITS+1) + +#endif + +/****************************************************** + *************** _Decimal64 support ******************* + ******************************************************/ + +#ifdef MPFR_WANT_DECIMAL_FLOATS +/* to cast between binary64 and decimal64 */ +union ieee_double_decimal64 { double d; _Decimal64 d64; }; +#endif + +/****************************************************** + **************** mpfr_t properties ******************* + ******************************************************/ + +/* In the following macro, p is usually a mpfr_prec_t, but this macro + works with other integer types (without integer overflow). Checking + that p >= 1 in debug mode is useful here because this macro can be + used on a computed precision (in particular, this formula does not + work for a degenerate case p = 0, and could give different results + on different platforms). But let us not use an assertion checking + in the MPFR_LAST_LIMB() and MPFR_LIMB_SIZE() macros below to avoid + too much expansion for assertions (in practice, this should be a + problem just when testing MPFR with the --enable-assert configure + option and the -ansi -pedantic-errors gcc compiler flags). */ +#define MPFR_PREC2LIMBS(p) \ + (MPFR_ASSERTD ((p) >= 1), ((p) - 1) / GMP_NUMB_BITS + 1) + +#define MPFR_PREC(x) ((x)->_mpfr_prec) +#define MPFR_EXP(x) ((x)->_mpfr_exp) +#define MPFR_MANT(x) ((x)->_mpfr_d) +#define MPFR_LAST_LIMB(x) ((MPFR_PREC (x) - 1) / GMP_NUMB_BITS) +#define MPFR_LIMB_SIZE(x) (MPFR_LAST_LIMB (x) + 1) + + +/****************************************************** + **************** exponent properties ***************** + ******************************************************/ + +/* Limits of the mpfr_exp_t type (NOT those of valid exponent values). + These macros can be used in preprocessor directives. */ +#if _MPFR_EXP_FORMAT == 1 +# define MPFR_EXP_MAX (SHRT_MAX) +# define MPFR_EXP_MIN (SHRT_MIN) +#elif _MPFR_EXP_FORMAT == 2 +# define MPFR_EXP_MAX (INT_MAX) +# define MPFR_EXP_MIN (INT_MIN) +#elif _MPFR_EXP_FORMAT == 3 +# define MPFR_EXP_MAX (LONG_MAX) +# define MPFR_EXP_MIN (LONG_MIN) +#elif _MPFR_EXP_FORMAT == 4 +# define MPFR_EXP_MAX (MPFR_INTMAX_MAX) +# define MPFR_EXP_MIN (MPFR_INTMAX_MIN) +#else +# error "Invalid MPFR Exp format" +#endif + +/* Before doing a cast to mpfr_uexp_t, make sure that the value is + nonnegative. */ +#define MPFR_UEXP(X) (MPFR_ASSERTD ((X) >= 0), (mpfr_uexp_t) (X)) + +#if MPFR_EXP_MIN >= LONG_MIN && MPFR_EXP_MAX <= LONG_MAX +typedef long int mpfr_eexp_t; +# define mpfr_get_exp_t(x,r) mpfr_get_si((x),(r)) +# define mpfr_set_exp_t(x,e,r) mpfr_set_si((x),(e),(r)) +# define MPFR_EXP_FSPEC "l" +#elif defined (_MPFR_H_HAVE_INTMAX_T) +typedef intmax_t mpfr_eexp_t; +# define mpfr_get_exp_t(x,r) mpfr_get_sj((x),(r)) +# define mpfr_set_exp_t(x,e,r) mpfr_set_sj((x),(e),(r)) +# define MPFR_EXP_FSPEC "j" +#else +# error "Cannot define mpfr_get_exp_t and mpfr_set_exp_t" +#endif + +/* Invalid exponent value (to track bugs...) */ +#define MPFR_EXP_INVALID \ + ((mpfr_exp_t) 1 << (GMP_NUMB_BITS*sizeof(mpfr_exp_t)/sizeof(mp_limb_t)-2)) + +/* Definition of the exponent limits for MPFR numbers. + * These limits are chosen so that if e is such an exponent, then 2e-1 and + * 2e+1 are representable. This is useful for intermediate computations, + * in particular the multiplication. + */ +#undef MPFR_EMIN_MIN +#undef MPFR_EMIN_MAX +#undef MPFR_EMAX_MIN +#undef MPFR_EMAX_MAX +#define MPFR_EMIN_MIN (1-MPFR_EXP_INVALID) +#define MPFR_EMIN_MAX (MPFR_EXP_INVALID-1) +#define MPFR_EMAX_MIN (1-MPFR_EXP_INVALID) +#define MPFR_EMAX_MAX (MPFR_EXP_INVALID-1) + +/* Use MPFR_GET_EXP and MPFR_SET_EXP instead of MPFR_EXP directly, + unless when the exponent may be out-of-range, for instance when + setting the exponent before calling mpfr_check_range. + MPFR_EXP_CHECK is defined when WANT_ASSERT is defined, but if you + don't use WANT_ASSERT (for speed reasons), you can still define + MPFR_EXP_CHECK by setting -DMPFR_EXP_CHECK in $CFLAGS. */ + +#ifdef MPFR_EXP_CHECK +# define MPFR_GET_EXP(x) (mpfr_get_exp) (x) +# define MPFR_SET_EXP(x, exp) MPFR_ASSERTN (!mpfr_set_exp ((x), (exp))) +# define MPFR_SET_INVALID_EXP(x) ((void) (MPFR_EXP (x) = MPFR_EXP_INVALID)) +#else +# define MPFR_GET_EXP(x) MPFR_EXP (x) +# define MPFR_SET_EXP(x, exp) ((void) (MPFR_EXP (x) = (exp))) +# define MPFR_SET_INVALID_EXP(x) ((void) 0) +#endif + + + +/****************************************************** + ********** Singular Values (NAN, INF, ZERO) ********** + ******************************************************/ + +/* Enum special value of exponent. */ +# define MPFR_EXP_ZERO (MPFR_EXP_MIN+1) +# define MPFR_EXP_NAN (MPFR_EXP_MIN+2) +# define MPFR_EXP_INF (MPFR_EXP_MIN+3) + +#define MPFR_IS_NAN(x) (MPFR_EXP(x) == MPFR_EXP_NAN) +#define MPFR_SET_NAN(x) (MPFR_EXP(x) = MPFR_EXP_NAN) +#define MPFR_IS_INF(x) (MPFR_EXP(x) == MPFR_EXP_INF) +#define MPFR_SET_INF(x) (MPFR_EXP(x) = MPFR_EXP_INF) +#define MPFR_IS_ZERO(x) (MPFR_EXP(x) == MPFR_EXP_ZERO) +#define MPFR_SET_ZERO(x) (MPFR_EXP(x) = MPFR_EXP_ZERO) +#define MPFR_NOTZERO(x) (MPFR_EXP(x) != MPFR_EXP_ZERO) + +#define MPFR_IS_FP(x) (!MPFR_IS_NAN(x) && !MPFR_IS_INF(x)) +#define MPFR_IS_SINGULAR(x) (MPFR_EXP(x) <= MPFR_EXP_INF) +#define MPFR_IS_PURE_FP(x) (!MPFR_IS_SINGULAR(x) && \ + (MPFR_ASSERTD ((MPFR_MANT(x)[MPFR_LAST_LIMB(x)] \ + & MPFR_LIMB_HIGHBIT) != 0), 1)) + +#define MPFR_ARE_SINGULAR(x,y) \ + (MPFR_UNLIKELY(MPFR_IS_SINGULAR(x)) || MPFR_UNLIKELY(MPFR_IS_SINGULAR(y))) + +#define MPFR_IS_POWER_OF_2(x) \ + (mpfr_cmp_ui_2exp ((x), 1, MPFR_GET_EXP (x) - 1) == 0) + + +/****************************************************** + ********************* Sign Macros ******************** + ******************************************************/ + +#define MPFR_SIGN_POS (1) +#define MPFR_SIGN_NEG (-1) + +#define MPFR_IS_STRICTPOS(x) (MPFR_NOTZERO((x)) && MPFR_SIGN(x) > 0) +#define MPFR_IS_STRICTNEG(x) (MPFR_NOTZERO((x)) && MPFR_SIGN(x) < 0) + +#define MPFR_IS_NEG(x) (MPFR_SIGN(x) < 0) +#define MPFR_IS_POS(x) (MPFR_SIGN(x) > 0) + +#define MPFR_SET_POS(x) (MPFR_SIGN(x) = MPFR_SIGN_POS) +#define MPFR_SET_NEG(x) (MPFR_SIGN(x) = MPFR_SIGN_NEG) + +#define MPFR_CHANGE_SIGN(x) (MPFR_SIGN(x) = -MPFR_SIGN(x)) +#define MPFR_SET_SAME_SIGN(x, y) (MPFR_SIGN(x) = MPFR_SIGN(y)) +#define MPFR_SET_OPPOSITE_SIGN(x, y) (MPFR_SIGN(x) = -MPFR_SIGN(y)) +#define MPFR_ASSERT_SIGN(s) \ + (MPFR_ASSERTD((s) == MPFR_SIGN_POS || (s) == MPFR_SIGN_NEG)) +#define MPFR_SET_SIGN(x, s) \ + (MPFR_ASSERT_SIGN(s), MPFR_SIGN(x) = s) +#define MPFR_IS_POS_SIGN(s1) (s1 > 0) +#define MPFR_IS_NEG_SIGN(s1) (s1 < 0) +#define MPFR_MULT_SIGN(s1, s2) ((s1) * (s2)) +/* Transform a sign to 1 or -1 */ +#define MPFR_FROM_SIGN_TO_INT(s) (s) +#define MPFR_INT_SIGN(x) MPFR_FROM_SIGN_TO_INT(MPFR_SIGN(x)) + + + +/****************************************************** + ***************** Ternary Value Macros *************** + ******************************************************/ + +/* Special inexact value */ +#define MPFR_EVEN_INEX 2 + +/* Macros for functions returning two inexact values in an 'int' */ +#define INEXPOS(y) ((y) == 0 ? 0 : (((y) > 0) ? 1 : 2)) +#define INEX(y,z) (INEXPOS(y) | (INEXPOS(z) << 2)) + +/* When returning the ternary inexact value, ALWAYS use one of the + following two macros, unless the flag comes from another function + returning the ternary inexact value */ +#define MPFR_RET(I) return \ + (I) ? ((__gmpfr_flags |= MPFR_FLAGS_INEXACT), (I)) : 0 +#define MPFR_RET_NAN return (__gmpfr_flags |= MPFR_FLAGS_NAN), 0 + +#define MPFR_SET_ERANGE() (__gmpfr_flags |= MPFR_FLAGS_ERANGE) + +#define SIGN(I) ((I) < 0 ? -1 : (I) > 0) +#define SAME_SIGN(I1,I2) (SIGN (I1) == SIGN (I2)) + + + +/****************************************************** + ************** Rounding mode macros ***************** + ******************************************************/ + +/* MPFR_RND_MAX gives the number of supported rounding modes by all functions. + * Once faithful rounding is implemented, MPFR_RNDA should be changed + * to MPFR_RNDF. But this will also require more changes in the tests. + */ +#define MPFR_RND_MAX ((mpfr_rnd_t)((MPFR_RNDA)+1)) + +/* We want to test this : + * (rnd == MPFR_RNDU && test) || (rnd == RNDD && !test) + * ie it transforms RNDU or RNDD to Away or Zero according to the sign */ +#define MPFR_IS_RNDUTEST_OR_RNDDNOTTEST(rnd, test) \ + (((rnd) + (test)) == MPFR_RNDD) + +/* We want to test if rnd = Zero, or Away. + 'test' is 1 if negative, and 0 if positive. */ +#define MPFR_IS_LIKE_RNDZ(rnd, test) \ + ((rnd==MPFR_RNDZ) || MPFR_IS_RNDUTEST_OR_RNDDNOTTEST (rnd, test)) + +#define MPFR_IS_LIKE_RNDU(rnd, sign) \ + ((rnd==MPFR_RNDU) || (rnd==MPFR_RNDZ && sign<0) || (rnd==MPFR_RNDA && sign>0)) + +#define MPFR_IS_LIKE_RNDD(rnd, sign) \ + ((rnd==MPFR_RNDD) || (rnd==MPFR_RNDZ && sign>0) || (rnd==MPFR_RNDA && sign<0)) + +/* Invert a rounding mode, RNDZ and RNDA are unchanged */ +#define MPFR_INVERT_RND(rnd) ((rnd == MPFR_RNDU) ? MPFR_RNDD : \ + ((rnd == MPFR_RNDD) ? MPFR_RNDU : rnd)) + +/* Transform RNDU and RNDD to RNDZ according to test */ +#define MPFR_UPDATE_RND_MODE(rnd, test) \ + do { \ + if (MPFR_UNLIKELY(MPFR_IS_RNDUTEST_OR_RNDDNOTTEST(rnd, test))) \ + rnd = MPFR_RNDZ; \ + } while (0) + +/* Transform RNDU and RNDD to RNDZ or RNDA according to sign, + leave the other modes unchanged */ +#define MPFR_UPDATE2_RND_MODE(rnd, sign) \ + do { \ + if (rnd == MPFR_RNDU) \ + rnd = (sign > 0) ? MPFR_RNDA : MPFR_RNDZ; \ + else if (rnd == MPFR_RNDD) \ + rnd = (sign < 0) ? MPFR_RNDA : MPFR_RNDZ; \ + } while (0) + + +/****************************************************** + ******************* Limb Macros ********************** + ******************************************************/ + + /* Definition of MPFR_LIMB_HIGHBIT */ +#if defined(GMP_LIMB_HIGHBIT) +# define MPFR_LIMB_HIGHBIT GMP_LIMB_HIGHBIT +#elif defined(MP_LIMB_T_HIGHBIT) +# define MPFR_LIMB_HIGHBIT MP_LIMB_T_HIGHBIT +#else +# error "Neither GMP_LIMB_HIGHBIT nor MP_LIMB_T_HIGHBIT defined in GMP" +#endif + +/* Mask to get the Most Significant Bit of a limb */ +#define MPFR_LIMB_MSB(l) ((l)&MPFR_LIMB_HIGHBIT) + +/* Definition of MPFR_LIMB_ONE & MPFR_LIMB_ZERO */ +#ifdef CNST_LIMB +# define MPFR_LIMB_ONE CNST_LIMB(1) +# define MPFR_LIMB_ZERO CNST_LIMB(0) +#else +# define MPFR_LIMB_ONE ((mp_limb_t) 1L) +# define MPFR_LIMB_ZERO ((mp_limb_t) 0L) +#endif + +/* Mask for the low 's' bits of a limb */ +#define MPFR_LIMB_MASK(s) ((MPFR_LIMB_ONE<<(s))-MPFR_LIMB_ONE) + + + +/****************************************************** + ********************** Memory ************************ + ******************************************************/ + +/* Heap Memory gestion */ +typedef union { mp_size_t s; mp_limb_t l; } mpfr_size_limb_t; +#define MPFR_GET_ALLOC_SIZE(x) \ + ( ((mp_size_t*) MPFR_MANT(x))[-1] + 0) +#define MPFR_SET_ALLOC_SIZE(x, n) \ + ( ((mp_size_t*) MPFR_MANT(x))[-1] = n) +#define MPFR_MALLOC_SIZE(s) \ + ( sizeof(mpfr_size_limb_t) + BYTES_PER_MP_LIMB * ((size_t) s) ) +#define MPFR_SET_MANT_PTR(x,p) \ + (MPFR_MANT(x) = (mp_limb_t*) ((mpfr_size_limb_t*) p + 1)) +#define MPFR_GET_REAL_PTR(x) \ + ((mp_limb_t*) ((mpfr_size_limb_t*) MPFR_MANT(x) - 1)) + +/* Temporary memory gestion */ +#ifndef TMP_SALLOC +/* GMP 4.1.x or below or internals */ +#define MPFR_TMP_DECL TMP_DECL +#define MPFR_TMP_MARK TMP_MARK +#define MPFR_TMP_ALLOC TMP_ALLOC +#define MPFR_TMP_FREE TMP_FREE +#else +#define MPFR_TMP_DECL(x) TMP_DECL +#define MPFR_TMP_MARK(x) TMP_MARK +#define MPFR_TMP_ALLOC(s) TMP_ALLOC(s) +#define MPFR_TMP_FREE(x) TMP_FREE +#endif + +/* This code is experimental: don't use it */ +#ifdef MPFR_USE_OWN_MPFR_TMP_ALLOC +extern unsigned char *mpfr_stack; +#undef MPFR_TMP_DECL +#undef MPFR_TMP_MARK +#undef MPFR_TMP_ALLOC +#undef MPFR_TMP_FREE +#define MPFR_TMP_DECL(_x) unsigned char *(_x) +#define MPFR_TMP_MARK(_x) ((_x) = mpfr_stack) +#define MPFR_TMP_ALLOC(_s) (mpfr_stack += (_s), mpfr_stack - (_s)) +#define MPFR_TMP_FREE(_x) (mpfr_stack = (_x)) +#endif + +#define MPFR_TMP_LIMBS_ALLOC(N) \ + ((mp_limb_t *) MPFR_TMP_ALLOC ((size_t) (N) * BYTES_PER_MP_LIMB)) + +/* temporary allocate 1 limb at xp, and initialize mpfr variable x */ +/* The temporary var doesn't have any size field, but it doesn't matter + * since only functions dealing with the Heap care about it */ +#define MPFR_TMP_INIT1(xp, x, p) \ + ( MPFR_PREC(x) = (p), \ + MPFR_MANT(x) = (xp), \ + MPFR_SET_POS(x), \ + MPFR_SET_INVALID_EXP(x)) + +#define MPFR_TMP_INIT(xp, x, p, s) \ + (xp = MPFR_TMP_LIMBS_ALLOC(s), \ + MPFR_TMP_INIT1(xp, x, p)) + +#define MPFR_TMP_INIT_ABS(d, s) \ + ( MPFR_PREC(d) = MPFR_PREC(s), \ + MPFR_MANT(d) = MPFR_MANT(s), \ + MPFR_SET_POS(d), \ + MPFR_EXP(d) = MPFR_EXP(s)) + + + +/****************************************************** + ***************** Cache macros ********************** + ******************************************************/ + +#define mpfr_const_pi(_d,_r) mpfr_cache(_d, __gmpfr_cache_const_pi,_r) +#define mpfr_const_log2(_d,_r) mpfr_cache(_d, __gmpfr_cache_const_log2, _r) +#define mpfr_const_euler(_d,_r) mpfr_cache(_d, __gmpfr_cache_const_euler, _r) +#define mpfr_const_catalan(_d,_r) mpfr_cache(_d,__gmpfr_cache_const_catalan,_r) + +#define MPFR_DECL_INIT_CACHE(_cache,_func) \ + mpfr_cache_t MPFR_THREAD_ATTR _cache = \ + {{{{0,MPFR_SIGN_POS,0,(mp_limb_t*)0}},0,_func}} + + + +/****************************************************** + ******************* Threshold *********************** + ******************************************************/ + +#include "mparam.h" + +/****************************************************** + ***************** Useful macros ********************* + ******************************************************/ + +/* Theses macros help the compiler to determine if a test is + likely or unlikely. The !! is necessary in case x is larger + than a long. */ +#if __MPFR_GNUC(3,0) || __MPFR_ICC(8,1,0) +# define MPFR_LIKELY(x) (__builtin_expect(!!(x),1)) +# define MPFR_UNLIKELY(x) (__builtin_expect(!!(x),0)) +#else +# define MPFR_LIKELY(x) (x) +# define MPFR_UNLIKELY(x) (x) +#endif + +/* Declare that some variable is initialized before being used (without a + dummy initialization) in order to avoid some compiler warnings. Use the + VAR = VAR trick (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36296) + only with gcc as this is undefined behavior, and we don't know what + other compilers do (they may also be smarter). This trick could be + disabled with future gcc versions. */ +#if defined(__GNUC__) +# define INITIALIZED(VAR) VAR = VAR +#else +# define INITIALIZED(VAR) VAR +#endif + +/* Ceil log 2: If GCC, uses a GCC extension, otherwise calls a function */ +/* Warning: + * Needs to define MPFR_NEED_LONGLONG. + * Computes ceil(log2(x)) only for x integer (unsigned long) + * Undefined if x is 0 */ +#if __MPFR_GNUC(2,95) || __MPFR_ICC(8,1,0) +# define MPFR_INT_CEIL_LOG2(x) \ + (MPFR_UNLIKELY ((x) == 1) ? 0 : \ + __extension__ ({ int _b; mp_limb_t _limb; \ + MPFR_ASSERTN ((x) > 1); \ + _limb = (x) - 1; \ + MPFR_ASSERTN (_limb == (x) - 1); \ + count_leading_zeros (_b, _limb); \ + (GMP_NUMB_BITS - _b); })) +#else +# define MPFR_INT_CEIL_LOG2(x) (__gmpfr_int_ceil_log2(x)) +#endif + +/* Add two integers with overflow handling */ +/* Example: MPFR_SADD_OVERFLOW (c, a, b, long, unsigned long, + * LONG_MIN, LONG_MAX, + * goto overflow, goto underflow); */ +#define MPFR_UADD_OVERFLOW(c,a,b,ACTION_IF_OVERFLOW) \ + do { \ + (c) = (a) + (b); \ + if ((c) < (a)) ACTION_IF_OVERFLOW; \ + } while (0) + +#define MPFR_SADD_OVERFLOW(c,a,b,STYPE,UTYPE,MIN,MAX,ACTION_IF_POS_OVERFLOW,ACTION_IF_NEG_OVERFLOW) \ + do { \ + if ((a) >= 0 && (b) >= 0) { \ + UTYPE uc,ua,ub; \ + ua = (UTYPE) (a); ub = (UTYPE) (b); \ + MPFR_UADD_OVERFLOW (uc, ua, ub, ACTION_IF_POS_OVERFLOW); \ + if (uc > (UTYPE)(MAX)) ACTION_IF_POS_OVERFLOW; \ + else (c) = (STYPE) uc; \ + } else if ((a) < 0 && (b) < 0) { \ + UTYPE uc,ua,ub; \ + ua = -(UTYPE) (a); ub = -(UTYPE) (b); \ + MPFR_UADD_OVERFLOW (uc, ua, ub, ACTION_IF_NEG_OVERFLOW); \ + if (uc >= -(UTYPE)(MIN) || uc > (UTYPE)(MAX)) { \ + if (uc == -(UTYPE)(MIN)) (c) = (MIN); \ + else ACTION_IF_NEG_OVERFLOW; } \ + else (c) = -(STYPE) uc; \ + } else (c) = (a) + (b); \ + } while (0) + + +/* Set a number to 1 (Fast) - It doesn't check if 1 is in the exponent range */ +#define MPFR_SET_ONE(x) \ +do { \ + mp_size_t _size = MPFR_LAST_LIMB(x); \ + MPFR_SET_POS(x); \ + MPFR_EXP(x) = 1; \ + MPN_ZERO ( MPFR_MANT(x), _size); \ + MPFR_MANT(x)[_size] = MPFR_LIMB_HIGHBIT; \ +} while (0) + +/* Compute s = (-a) % GMP_NUMB_BITS as unsigned */ +#define MPFR_UNSIGNED_MINUS_MODULO(s, a) \ + do \ + { \ + if (IS_POW2 (GMP_NUMB_BITS)) \ + (s) = (- (unsigned int) (a)) % GMP_NUMB_BITS; \ + else \ + { \ + (s) = (a) % GMP_NUMB_BITS; \ + if ((s) != 0) \ + (s) = GMP_NUMB_BITS - (s); \ + } \ + MPFR_ASSERTD ((s) >= 0 && (s) < GMP_NUMB_BITS); \ + } \ + while (0) + +/* Use it only for debug reasons */ +/* MPFR_TRACE (operation) : execute operation iff DEBUG flag is set */ +/* MPFR_DUMP (x) : print x (a mpfr_t) on stdout */ +#ifdef DEBUG +# define MPFR_TRACE(x) x +#else +# define MPFR_TRACE(x) (void) 0 +#endif +#define MPFR_DUMP(x) ( printf(#x"="), mpfr_dump(x) ) + +/* Test if X (positive) is a power of 2 */ +#define IS_POW2(X) (((X) & ((X) - 1)) == 0) +#define NOT_POW2(X) (((X) & ((X) - 1)) != 0) + +/* Safe absolute value (to avoid possible integer overflow) */ +/* type is the target (unsigned) type */ +#define SAFE_ABS(type,x) ((x) >= 0 ? (type)(x) : -(type)(x)) + +#define mpfr_get_d1(x) mpfr_get_d(x,__gmpfr_default_rounding_mode) + +/* Store in r the size in bits of the mpz_t z */ +#define MPFR_MPZ_SIZEINBASE2(r, z) \ + do { \ + int _cnt; \ + mp_size_t _size; \ + MPFR_ASSERTD (mpz_sgn (z) != 0); \ + _size = ABSIZ(z); \ + count_leading_zeros (_cnt, PTR(z)[_size-1]); \ + (r) = _size * GMP_NUMB_BITS - _cnt; \ + } while (0) + +/* Needs <locale.h> */ +#ifdef HAVE_LOCALE_H +#include <locale.h> +/* Warning! In case of signed char, the value of MPFR_DECIMAL_POINT may + be negative (the ISO C99 does not seem to forbid negative values). */ +#define MPFR_DECIMAL_POINT (localeconv()->decimal_point[0]) +#define MPFR_THOUSANDS_SEPARATOR (localeconv()->thousands_sep[0]) +#else +#define MPFR_DECIMAL_POINT ((char) '.') +#define MPFR_THOUSANDS_SEPARATOR ('\0') +#endif + + +/* Set y to s*significand(x)*2^e, for example MPFR_ALIAS(y,x,1,MPFR_EXP(x)) + sets y to |x|, and MPFR_ALIAS(y,x,MPFR_SIGN(x),0) sets y to x*2^f such + that 1/2 <= |y| < 1. Does not check y is in the valid exponent range. + WARNING! x and y share the same mantissa. So, some operations are + not valid if x has been provided via an argument, e.g., trying to + modify the mantissa of y, even temporarily, or calling mpfr_clear on y. +*/ +#define MPFR_ALIAS(y,x,s,e) \ + do \ + { \ + MPFR_PREC(y) = MPFR_PREC(x); \ + MPFR_SIGN(y) = (s); \ + MPFR_EXP(y) = (e); \ + MPFR_MANT(y) = MPFR_MANT(x); \ + } while (0) + + +/****************************************************** + ************** Save exponent macros **************** + ******************************************************/ + +/* See README.dev for details on how to use the macros. + They are used to set the exponent range to the maximum + temporarily */ + +typedef struct { + unsigned int saved_flags; + mpfr_exp_t saved_emin; + mpfr_exp_t saved_emax; +} mpfr_save_expo_t; + +/* Minimum and maximum exponents of the extended exponent range. */ +#define MPFR_EXT_EMIN MPFR_EMIN_MIN +#define MPFR_EXT_EMAX MPFR_EMAX_MAX + +#define MPFR_SAVE_EXPO_DECL(x) mpfr_save_expo_t x +#define MPFR_SAVE_EXPO_MARK(x) \ + ((x).saved_flags = __gmpfr_flags, \ + (x).saved_emin = __gmpfr_emin, \ + (x).saved_emax = __gmpfr_emax, \ + __gmpfr_emin = MPFR_EXT_EMIN, \ + __gmpfr_emax = MPFR_EXT_EMAX) +#define MPFR_SAVE_EXPO_FREE(x) \ + (__gmpfr_flags = (x).saved_flags, \ + __gmpfr_emin = (x).saved_emin, \ + __gmpfr_emax = (x).saved_emax) +#define MPFR_SAVE_EXPO_UPDATE_FLAGS(x, flags) \ + (x).saved_flags |= (flags) + +/* Speed up final checking */ +#define mpfr_check_range(x,t,r) \ + (MPFR_LIKELY (MPFR_EXP (x) >= __gmpfr_emin && MPFR_EXP (x) <= __gmpfr_emax) \ + ? ((t) ? (__gmpfr_flags |= MPFR_FLAGS_INEXACT, (t)) : 0) \ + : mpfr_check_range(x,t,r)) + + +/****************************************************** + ***************** Inline Rounding ******************* + ******************************************************/ + +/* + * Note: due to the labels, one cannot use a macro MPFR_RNDRAW* more than + * once in a function (otherwise these labels would not be unique). + */ + +/* + * Round mantissa (srcp, sprec) to mpfr_t dest using rounding mode rnd + * assuming dest's sign is sign. + * In rounding to nearest mode, execute MIDDLE_HANDLER when the value + * is the middle of two consecutive numbers in dest precision. + * Execute OVERFLOW_HANDLER in case of overflow when rounding. + */ +#define MPFR_RNDRAW_GEN(inexact, dest, srcp, sprec, rnd, sign, \ + MIDDLE_HANDLER, OVERFLOW_HANDLER) \ + do { \ + mp_size_t _dests, _srcs; \ + mp_limb_t *_destp; \ + mpfr_prec_t _destprec, _srcprec; \ + \ + /* Check Trivial Case when Dest Mantissa has more bits than source */ \ + _srcprec = (sprec); \ + _destprec = MPFR_PREC (dest); \ + _destp = MPFR_MANT (dest); \ + if (MPFR_UNLIKELY (_destprec >= _srcprec)) \ + { \ + _srcs = MPFR_PREC2LIMBS (_srcprec); \ + _dests = MPFR_PREC2LIMBS (_destprec) - _srcs; \ + MPN_COPY (_destp + _dests, srcp, _srcs); \ + MPN_ZERO (_destp, _dests); \ + inexact = 0; \ + } \ + else \ + { \ + /* Non trivial case: rounding needed */ \ + mpfr_prec_t _sh; \ + mp_limb_t *_sp; \ + mp_limb_t _rb, _sb, _ulp; \ + \ + /* Compute Position and shift */ \ + _srcs = MPFR_PREC2LIMBS (_srcprec); \ + _dests = MPFR_PREC2LIMBS (_destprec); \ + MPFR_UNSIGNED_MINUS_MODULO (_sh, _destprec); \ + _sp = (srcp) + _srcs - _dests; \ + \ + /* General case when prec % GMP_NUMB_BITS != 0 */ \ + if (MPFR_LIKELY (_sh != 0)) \ + { \ + mp_limb_t _mask; \ + /* Compute Rounding Bit and Sticky Bit */ \ + /* Note: in directed rounding modes, if the rounding bit */ \ + /* is 1, the behavior does not depend on the sticky bit; */ \ + /* thus we will not try to compute it in this case (this */ \ + /* can be much faster and avoids to read uninitialized */ \ + /* data in the current mpfr_mul implementation). We just */ \ + /* make sure that _sb is initialized. */ \ + _mask = MPFR_LIMB_ONE << (_sh - 1); \ + _rb = _sp[0] & _mask; \ + _sb = _sp[0] & (_mask - 1); \ + if (MPFR_UNLIKELY (_sb == 0) && \ + ((rnd) == MPFR_RNDN || _rb == 0)) \ + { /* TODO: Improve it */ \ + mp_limb_t *_tmp; \ + mp_size_t _n; \ + for (_tmp = _sp, _n = _srcs - _dests ; \ + _n != 0 && _sb == 0 ; _n--) \ + _sb = *--_tmp; \ + } \ + _ulp = 2 * _mask; \ + } \ + else /* _sh == 0 */ \ + { \ + MPFR_ASSERTD (_dests < _srcs); \ + /* Compute Rounding Bit and Sticky Bit - see note above */ \ + _rb = _sp[-1] & MPFR_LIMB_HIGHBIT; \ + _sb = _sp[-1] & (MPFR_LIMB_HIGHBIT-1); \ + if (MPFR_UNLIKELY (_sb == 0) && \ + ((rnd) == MPFR_RNDN || _rb == 0)) \ + { \ + mp_limb_t *_tmp; \ + mp_size_t _n; \ + for (_tmp = _sp - 1, _n = _srcs - _dests - 1 ; \ + _n != 0 && _sb == 0 ; _n--) \ + _sb = *--_tmp; \ + } \ + _ulp = MPFR_LIMB_ONE; \ + } \ + /* Rounding */ \ + if (MPFR_LIKELY (rnd == MPFR_RNDN)) \ + { \ + if (_rb == 0) \ + { \ + trunc: \ + inexact = MPFR_LIKELY ((_sb | _rb) != 0) ? -sign : 0; \ + trunc_doit: \ + MPN_COPY (_destp, _sp, _dests); \ + _destp[0] &= ~(_ulp - 1); \ + } \ + else if (MPFR_UNLIKELY (_sb == 0)) \ + { /* Middle of two consecutive representable numbers */ \ + MIDDLE_HANDLER; \ + } \ + else \ + { \ + if (0) \ + goto addoneulp_doit; /* dummy code to avoid warning */ \ + addoneulp: \ + inexact = sign; \ + addoneulp_doit: \ + if (MPFR_UNLIKELY (mpn_add_1 (_destp, _sp, _dests, _ulp))) \ + { \ + _destp[_dests - 1] = MPFR_LIMB_HIGHBIT; \ + OVERFLOW_HANDLER; \ + } \ + _destp[0] &= ~(_ulp - 1); \ + } \ + } \ + else \ + { /* Directed rounding mode */ \ + if (MPFR_LIKELY (MPFR_IS_LIKE_RNDZ (rnd, \ + MPFR_IS_NEG_SIGN (sign)))) \ + goto trunc; \ + else if (MPFR_UNLIKELY ((_sb | _rb) == 0)) \ + { \ + inexact = 0; \ + goto trunc_doit; \ + } \ + else \ + goto addoneulp; \ + } \ + } \ + } while (0) + +/* + * Round mantissa (srcp, sprec) to mpfr_t dest using rounding mode rnd + * assuming dest's sign is sign. + * Execute OVERFLOW_HANDLER in case of overflow when rounding. + */ +#define MPFR_RNDRAW(inexact, dest, srcp, sprec, rnd, sign, OVERFLOW_HANDLER) \ + MPFR_RNDRAW_GEN (inexact, dest, srcp, sprec, rnd, sign, \ + if ((_sp[0] & _ulp) == 0) \ + { \ + inexact = -sign; \ + goto trunc_doit; \ + } \ + else \ + goto addoneulp; \ + , OVERFLOW_HANDLER) + +/* + * Round mantissa (srcp, sprec) to mpfr_t dest using rounding mode rnd + * assuming dest's sign is sign. + * Execute OVERFLOW_HANDLER in case of overflow when rounding. + * Set inexact to +/- MPFR_EVEN_INEX in case of even rounding. + */ +#define MPFR_RNDRAW_EVEN(inexact, dest, srcp, sprec, rnd, sign, \ + OVERFLOW_HANDLER) \ + MPFR_RNDRAW_GEN (inexact, dest, srcp, sprec, rnd, sign, \ + if ((_sp[0] & _ulp) == 0) \ + { \ + inexact = -MPFR_EVEN_INEX * sign; \ + goto trunc_doit; \ + } \ + else \ + { \ + inexact = MPFR_EVEN_INEX * sign; \ + goto addoneulp_doit; \ + } \ + , OVERFLOW_HANDLER) + +/* Return TRUE if b is non singular and we can round it to precision 'prec' + and determine the ternary value, with rounding mode 'rnd', and with + error at most 'error' */ +#define MPFR_CAN_ROUND(b,err,prec,rnd) \ + (!MPFR_IS_SINGULAR (b) && mpfr_round_p (MPFR_MANT (b), MPFR_LIMB_SIZE (b), \ + (err), (prec) + ((rnd)==MPFR_RNDN))) + +/* Copy the sign and the significand, and handle the exponent in exp. */ +#define MPFR_SETRAW(inexact,dest,src,exp,rnd) \ + if (MPFR_UNLIKELY (dest != src)) \ + { \ + MPFR_SET_SIGN (dest, MPFR_SIGN (src)); \ + if (MPFR_LIKELY (MPFR_PREC (dest) == MPFR_PREC (src))) \ + { \ + MPN_COPY (MPFR_MANT (dest), MPFR_MANT (src), \ + MPFR_LIMB_SIZE (src)); \ + inexact = 0; \ + } \ + else \ + { \ + MPFR_RNDRAW (inexact, dest, MPFR_MANT (src), MPFR_PREC (src), \ + rnd, MPFR_SIGN (src), exp++); \ + } \ + } \ + else \ + inexact = 0; + +/* TODO: fix this description (see round_near_x.c). */ +/* Assuming that the function has a Taylor expansion which looks like: + y=o(f(x)) = o(v + g(x)) with |g(x)| <= 2^(EXP(v)-err) + we can quickly set y to v if x is small (ie err > prec(y)+1) in most + cases. It assumes that f(x) is not representable exactly as a FP number. + v must not be a singular value (NAN, INF or ZERO); usual values are + v=1 or v=x. + + y is the destination (a mpfr_t), v the value to set (a mpfr_t), + err1+err2 with err2 <= 3 the error term (mpfr_exp_t's), dir (an int) is + the direction of the committed error (if dir = 0, it rounds toward 0, + if dir=1, it rounds away from 0), rnd the rounding mode. + + It returns from the function a ternary value in case of success. + If you want to free something, you must fill the "extra" field + in consequences, otherwise put nothing in it. + + The test is less restrictive than necessary, but the function + will finish the check itself. + + Note: err1 + err2 is allowed to overflow as mpfr_exp_t, but it must give + its real value as mpfr_uexp_t. +*/ +#define MPFR_FAST_COMPUTE_IF_SMALL_INPUT(y,v,err1,err2,dir,rnd,extra) \ + do { \ + mpfr_ptr _y = (y); \ + mpfr_exp_t _err1 = (err1); \ + mpfr_exp_t _err2 = (err2); \ + if (_err1 > 0) \ + { \ + mpfr_uexp_t _err = (mpfr_uexp_t) _err1 + _err2; \ + if (MPFR_UNLIKELY (_err > MPFR_PREC (_y) + 1)) \ + { \ + int _inexact = mpfr_round_near_x (_y,(v),_err,(dir),(rnd)); \ + if (_inexact != 0) \ + { \ + extra; \ + return _inexact; \ + } \ + } \ + } \ + } while (0) + +/* Variant, to be called somewhere after MPFR_SAVE_EXPO_MARK. This variant + is needed when there are some computations before or when some non-zero + real constant is used, such as __gmpfr_one for mpfr_cos. */ +#define MPFR_SMALL_INPUT_AFTER_SAVE_EXPO(y,v,err1,err2,dir,rnd,expo,extra) \ + do { \ + mpfr_ptr _y = (y); \ + mpfr_exp_t _err1 = (err1); \ + mpfr_exp_t _err2 = (err2); \ + if (_err1 > 0) \ + { \ + mpfr_uexp_t _err = (mpfr_uexp_t) _err1 + _err2; \ + if (MPFR_UNLIKELY (_err > MPFR_PREC (_y) + 1)) \ + { \ + int _inexact; \ + mpfr_clear_flags (); \ + _inexact = mpfr_round_near_x (_y,(v),_err,(dir),(rnd)); \ + if (_inexact != 0) \ + { \ + extra; \ + MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags); \ + MPFR_SAVE_EXPO_FREE (expo); \ + return mpfr_check_range (_y, _inexact, (rnd)); \ + } \ + } \ + } \ + } while (0) + +/****************************************************** + *************** Ziv Loop Macro ********************* + ******************************************************/ + +#ifndef MPFR_USE_LOGGING + +#define MPFR_ZIV_DECL(_x) mpfr_prec_t _x +#define MPFR_ZIV_INIT(_x, _p) (_x) = GMP_NUMB_BITS +#define MPFR_ZIV_NEXT(_x, _p) ((_p) += (_x), (_x) = (_p)/2) +#define MPFR_ZIV_FREE(x) + +#else + +/* The following test on glibc is there mainly for Darwin (Mac OS X), to + obtain a better error message. The real test should have been a test + concerning nested functions in gcc, which are disabled by default on + Darwin; but it is not possible to do that without a configure test. */ +# if defined (__cplusplus) || !(__MPFR_GNUC(3,0) && __MPFR_GLIBC(2,0)) +# error "Logging not supported (needs gcc >= 3.0 and GNU C Library >= 2.0)." +# endif + +/* Use LOGGING */ + +/* Note: the mpfr_log_level >= 0 below avoids to take into account + Ziv loops used by the MPFR functions called by the mpfr_fprintf + in LOG_PRINT. */ + +#define MPFR_ZIV_DECL(_x) \ + mpfr_prec_t _x; \ + int _x ## _cpt = 1; \ + static unsigned long _x ## _loop = 0, _x ## _bad = 0; \ + static const char *_x ## _fname = __func__; \ + auto void __attribute__ ((destructor)) x ## _f (void); \ + void __attribute__ ((destructor)) x ## _f (void) { \ + if (_x ## _loop != 0 && (MPFR_LOG_STAT_F & mpfr_log_type)) \ + fprintf (mpfr_log_file, \ + "%s: Ziv failed %2.2f%% (%lu bad cases / %lu calls)\n", \ + _x ## _fname, (double) 100.0 * _x ## _bad / _x ## _loop, \ + _x ## _bad, _x ## _loop ); } + +#define MPFR_ZIV_INIT(_x, _p) \ + do \ + { \ + (_x) = GMP_NUMB_BITS; \ + if (mpfr_log_level >= 0) \ + _x ## _loop ++; \ + if ((MPFR_LOG_BADCASE_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + LOG_PRINT ("%s:ZIV 1st prec=%Pd\n", \ + __func__, (mpfr_prec_t) (_p)); \ + } \ + while (0) + +#define MPFR_ZIV_NEXT(_x, _p) \ + do \ + { \ + (_p) += (_x); \ + (_x) = (_p) / 2; \ + if (mpfr_log_level >= 0) \ + _x ## _bad += (_x ## _cpt == 1); \ + _x ## _cpt ++; \ + if ((MPFR_LOG_BADCASE_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + LOG_PRINT ("%s:ZIV new prec=%Pd\n", \ + __func__, (mpfr_prec_t) (_p)); \ + } \ + while (0) + +#define MPFR_ZIV_FREE(_x) \ + do \ + { \ + if ((MPFR_LOG_BADCASE_F & mpfr_log_type) && _x ## _cpt > 1 && \ + (mpfr_log_current <= mpfr_log_level)) \ + fprintf (mpfr_log_file, "%s:ZIV %d loops\n", \ + __func__, _x ## _cpt); \ + } \ + while (0) + +#endif + + +/****************************************************** + *************** Logging Macros ********************* + ******************************************************/ + +/* The different kind of LOG */ +#define MPFR_LOG_INPUT_F 1 +#define MPFR_LOG_OUTPUT_F 2 +#define MPFR_LOG_INTERNAL_F 4 +#define MPFR_LOG_TIME_F 8 +#define MPFR_LOG_BADCASE_F 16 +#define MPFR_LOG_MSG_F 32 +#define MPFR_LOG_STAT_F 64 + +#ifdef MPFR_USE_LOGGING + +/* Check if we can support this feature */ +# ifdef MPFR_USE_THREAD_SAFE +# error "Enable either `Logging' or `thread-safe', not both" +# endif +# if !__MPFR_GNUC(3,0) +# error "Logging not supported (GCC >= 3.0)" +# endif + +#if defined (__cplusplus) +extern "C" { +#endif + +__MPFR_DECLSPEC extern FILE *mpfr_log_file; +__MPFR_DECLSPEC extern int mpfr_log_type; +__MPFR_DECLSPEC extern int mpfr_log_level; +__MPFR_DECLSPEC extern int mpfr_log_current; +__MPFR_DECLSPEC extern mpfr_prec_t mpfr_log_prec; + +#if defined (__cplusplus) + } +#endif + +/* LOG_PRINT calls mpfr_fprintf on mpfr_log_file with logging disabled + (recursive logging is not wanted and freezes MPFR). */ +#define LOG_PRINT(format, ...) \ + do \ + { \ + int old_level = mpfr_log_level; \ + mpfr_log_level = -1; /* disable logging in mpfr_fprintf */ \ + __gmpfr_cache_const_pi = __gmpfr_logging_pi; \ + __gmpfr_cache_const_log2 = __gmpfr_logging_log2; \ + mpfr_fprintf (mpfr_log_file, format, __VA_ARGS__); \ + mpfr_log_level = old_level; \ + __gmpfr_cache_const_pi = __gmpfr_normal_pi; \ + __gmpfr_cache_const_log2 = __gmpfr_normal_log2; \ + } \ + while (0) + +#define MPFR_LOG_VAR(x) \ + do \ + if ((MPFR_LOG_INTERNAL_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + LOG_PRINT ("%s.%d:%s[%#Pu]=%.*Rg\n", __func__, __LINE__, \ + #x, mpfr_get_prec (x), mpfr_log_prec, x); \ + while (0) + +#define MPFR_LOG_MSG2(format, ...) \ + do \ + if ((MPFR_LOG_MSG_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + LOG_PRINT ("%s.%d: "format, __func__, __LINE__, __VA_ARGS__); \ + while (0) +#define MPFR_LOG_MSG(x) MPFR_LOG_MSG2 x + +#define MPFR_LOG_BEGIN2(format, ...) \ + mpfr_log_current ++; \ + if ((MPFR_LOG_INPUT_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + LOG_PRINT ("%s:IN "format"\n", __func__, __VA_ARGS__); \ + if ((MPFR_LOG_TIME_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + __gmpfr_log_time = mpfr_get_cputime (); +#define MPFR_LOG_BEGIN(x) \ + int __gmpfr_log_time = 0; \ + MPFR_LOG_BEGIN2 x + +#define MPFR_LOG_END2(format, ...) \ + if ((MPFR_LOG_TIME_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + fprintf (mpfr_log_file, "%s:TIM %dms\n", __mpfr_log_fname, \ + mpfr_get_cputime () - __gmpfr_log_time); \ + if ((MPFR_LOG_OUTPUT_F & mpfr_log_type) && \ + (mpfr_log_current <= mpfr_log_level)) \ + LOG_PRINT ("%s:OUT "format"\n", __mpfr_log_fname, __VA_ARGS__); \ + mpfr_log_current --; +#define MPFR_LOG_END(x) \ + static const char *__mpfr_log_fname = __func__; \ + MPFR_LOG_END2 x + +#define MPFR_LOG_FUNC(begin,end) \ + static const char *__mpfr_log_fname = __func__; \ + auto void __mpfr_log_cleanup (int *time); \ + void __mpfr_log_cleanup (int *time) { \ + int __gmpfr_log_time = *time; \ + MPFR_LOG_END2 end; } \ + int __gmpfr_log_time __attribute__ ((cleanup (__mpfr_log_cleanup))); \ + __gmpfr_log_time = 0; \ + MPFR_LOG_BEGIN2 begin + +#else /* MPFR_USE_LOGGING */ + +/* Define void macro for logging */ + +#define MPFR_LOG_VAR(x) +#define MPFR_LOG_BEGIN(x) +#define MPFR_LOG_END(x) +#define MPFR_LOG_MSG(x) +#define MPFR_LOG_FUNC(x,y) + +#endif /* MPFR_USE_LOGGING */ + + +/************************************************************** + ************ Group Initialize Functions Macros ************* + **************************************************************/ + +#ifndef MPFR_GROUP_STATIC_SIZE +# define MPFR_GROUP_STATIC_SIZE 16 +#endif + +struct mpfr_group_t { + size_t alloc; + mp_limb_t *mant; + mp_limb_t tab[MPFR_GROUP_STATIC_SIZE]; +}; + +#define MPFR_GROUP_DECL(g) struct mpfr_group_t g +#define MPFR_GROUP_CLEAR(g) do { \ + MPFR_LOG_MSG (("GROUP_CLEAR: ptr = 0x%lX, size = %lu\n", \ + (unsigned long) (g).mant, \ + (unsigned long) (g).alloc)); \ + if (MPFR_UNLIKELY ((g).alloc != 0)) { \ + MPFR_ASSERTD ((g).mant != (g).tab); \ + (*__gmp_free_func) ((g).mant, (g).alloc); \ + }} while (0) + +#define MPFR_GROUP_INIT_TEMPLATE(g, prec, num, handler) do { \ + mpfr_prec_t _prec = (prec); \ + mp_size_t _size; \ + MPFR_ASSERTD (_prec >= MPFR_PREC_MIN); \ + if (MPFR_UNLIKELY (_prec > MPFR_PREC_MAX)) \ + mpfr_abort_prec_max (); \ + _size = MPFR_PREC2LIMBS (_prec); \ + if (MPFR_UNLIKELY (_size * (num) > MPFR_GROUP_STATIC_SIZE)) \ + { \ + (g).alloc = (num) * _size * sizeof (mp_limb_t); \ + (g).mant = (mp_limb_t *) (*__gmp_allocate_func) ((g).alloc); \ + } \ + else \ + { \ + (g).alloc = 0; \ + (g).mant = (g).tab; \ + } \ + MPFR_LOG_MSG (("GROUP_INIT: ptr = 0x%lX, size = %lu\n", \ + (unsigned long) (g).mant, (unsigned long) (g).alloc)); \ + handler; \ + } while (0) +#define MPFR_GROUP_TINIT(g, n, x) \ + MPFR_TMP_INIT1 ((g).mant + _size * (n), x, _prec) + +#define MPFR_GROUP_INIT_1(g, prec, x) \ + MPFR_GROUP_INIT_TEMPLATE(g, prec, 1, MPFR_GROUP_TINIT(g, 0, x)) +#define MPFR_GROUP_INIT_2(g, prec, x, y) \ + MPFR_GROUP_INIT_TEMPLATE(g, prec, 2, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y)) +#define MPFR_GROUP_INIT_3(g, prec, x, y, z) \ + MPFR_GROUP_INIT_TEMPLATE(g, prec, 3, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z)) +#define MPFR_GROUP_INIT_4(g, prec, x, y, z, t) \ + MPFR_GROUP_INIT_TEMPLATE(g, prec, 4, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t)) +#define MPFR_GROUP_INIT_5(g, prec, x, y, z, t, a) \ + MPFR_GROUP_INIT_TEMPLATE(g, prec, 5, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \ + MPFR_GROUP_TINIT(g, 4, a)) +#define MPFR_GROUP_INIT_6(g, prec, x, y, z, t, a, b) \ + MPFR_GROUP_INIT_TEMPLATE(g, prec, 6, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \ + MPFR_GROUP_TINIT(g, 4, a);MPFR_GROUP_TINIT(g, 5, b)) + +#define MPFR_GROUP_REPREC_TEMPLATE(g, prec, num, handler) do { \ + mpfr_prec_t _prec = (prec); \ + size_t _oalloc = (g).alloc; \ + mp_size_t _size; \ + MPFR_LOG_MSG (("GROUP_REPREC: oldptr = 0x%lX, oldsize = %lu\n", \ + (unsigned long) (g).mant, (unsigned long) _oalloc)); \ + MPFR_ASSERTD (_prec >= MPFR_PREC_MIN); \ + if (MPFR_UNLIKELY (_prec > MPFR_PREC_MAX)) \ + mpfr_abort_prec_max (); \ + _size = MPFR_PREC2LIMBS (_prec); \ + (g).alloc = (num) * _size * sizeof (mp_limb_t); \ + if (MPFR_LIKELY (_oalloc == 0)) \ + (g).mant = (mp_limb_t *) (*__gmp_allocate_func) ((g).alloc); \ + else \ + (g).mant = (mp_limb_t *) \ + (*__gmp_reallocate_func) ((g).mant, _oalloc, (g).alloc); \ + MPFR_LOG_MSG (("GROUP_REPREC: newptr = 0x%lX, newsize = %lu\n", \ + (unsigned long) (g).mant, (unsigned long) (g).alloc)); \ + handler; \ + } while (0) + +#define MPFR_GROUP_REPREC_1(g, prec, x) \ + MPFR_GROUP_REPREC_TEMPLATE(g, prec, 1, MPFR_GROUP_TINIT(g, 0, x)) +#define MPFR_GROUP_REPREC_2(g, prec, x, y) \ + MPFR_GROUP_REPREC_TEMPLATE(g, prec, 2, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y)) +#define MPFR_GROUP_REPREC_3(g, prec, x, y, z) \ + MPFR_GROUP_REPREC_TEMPLATE(g, prec, 3, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z)) +#define MPFR_GROUP_REPREC_4(g, prec, x, y, z, t) \ + MPFR_GROUP_REPREC_TEMPLATE(g, prec, 4, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t)) +#define MPFR_GROUP_REPREC_5(g, prec, x, y, z, t, a) \ + MPFR_GROUP_REPREC_TEMPLATE(g, prec, 5, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \ + MPFR_GROUP_TINIT(g, 4, a)) +#define MPFR_GROUP_REPREC_6(g, prec, x, y, z, t, a, b) \ + MPFR_GROUP_REPREC_TEMPLATE(g, prec, 6, \ + MPFR_GROUP_TINIT(g, 0, x);MPFR_GROUP_TINIT(g, 1, y); \ + MPFR_GROUP_TINIT(g, 2, z);MPFR_GROUP_TINIT(g, 3, t); \ + MPFR_GROUP_TINIT(g, 4, a);MPFR_GROUP_TINIT(g, 5, b)) + + +/****************************************************** + *************** Internal Functions ***************** + ******************************************************/ + +#if defined (__cplusplus) +extern "C" { +#endif + +__MPFR_DECLSPEC int mpfr_underflow _MPFR_PROTO ((mpfr_ptr, mpfr_rnd_t, int)); +__MPFR_DECLSPEC int mpfr_overflow _MPFR_PROTO ((mpfr_ptr, mpfr_rnd_t, int)); + +__MPFR_DECLSPEC int mpfr_add1 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr, + mpfr_srcptr, mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_sub1 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr, + mpfr_srcptr, mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_add1sp _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr, + mpfr_srcptr, mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_sub1sp _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr, + mpfr_srcptr, mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_can_round_raw _MPFR_PROTO ((const mp_limb_t *, + mp_size_t, int, mpfr_exp_t, mpfr_rnd_t, mpfr_rnd_t, mpfr_prec_t)); + +__MPFR_DECLSPEC int mpfr_cmp2 _MPFR_PROTO ((mpfr_srcptr, mpfr_srcptr, + mpfr_prec_t *)); + +__MPFR_DECLSPEC long __gmpfr_ceil_log2 _MPFR_PROTO ((double)); +__MPFR_DECLSPEC long __gmpfr_floor_log2 _MPFR_PROTO ((double)); +__MPFR_DECLSPEC double __gmpfr_ceil_exp2 _MPFR_PROTO ((double)); +__MPFR_DECLSPEC unsigned long __gmpfr_isqrt _MPFR_PROTO ((unsigned long)); +__MPFR_DECLSPEC unsigned long __gmpfr_cuberoot _MPFR_PROTO ((unsigned long)); +__MPFR_DECLSPEC int __gmpfr_int_ceil_log2 _MPFR_PROTO ((unsigned long)); + +__MPFR_DECLSPEC mpfr_exp_t mpfr_ceil_mul _MPFR_PROTO ((mpfr_exp_t, int, int)); + +__MPFR_DECLSPEC int mpfr_exp_2 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_exp_3 _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr,mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_powerof2_raw _MPFR_PROTO ((mpfr_srcptr)); + +__MPFR_DECLSPEC int mpfr_pow_general _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr, + mpfr_srcptr, mpfr_rnd_t, int, mpfr_save_expo_t *)); + +__MPFR_DECLSPEC void mpfr_setmax _MPFR_PROTO ((mpfr_ptr, mpfr_exp_t)); +__MPFR_DECLSPEC void mpfr_setmin _MPFR_PROTO ((mpfr_ptr, mpfr_exp_t)); + +__MPFR_DECLSPEC long mpfr_mpn_exp _MPFR_PROTO ((mp_limb_t *, mpfr_exp_t *, int, + mpfr_exp_t, size_t)); + +#ifdef _MPFR_H_HAVE_FILE +__MPFR_DECLSPEC void mpfr_fprint_binary _MPFR_PROTO ((FILE *, mpfr_srcptr)); +#endif +__MPFR_DECLSPEC void mpfr_print_binary _MPFR_PROTO ((mpfr_srcptr)); +__MPFR_DECLSPEC void mpfr_print_mant_binary _MPFR_PROTO ((const char*, + const mp_limb_t*, mpfr_prec_t)); +__MPFR_DECLSPEC void mpfr_set_str_binary _MPFR_PROTO((mpfr_ptr, const char*)); + +__MPFR_DECLSPEC int mpfr_round_raw _MPFR_PROTO ((mp_limb_t *, + const mp_limb_t *, mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t, int *)); +__MPFR_DECLSPEC int mpfr_round_raw_2 _MPFR_PROTO ((const mp_limb_t *, + mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t)); +/* No longer defined (see round_prec.c). + Uncomment if it needs to be defined again. +__MPFR_DECLSPEC int mpfr_round_raw_3 _MPFR_PROTO ((const mp_limb_t *, + mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t, int *)); +*/ +__MPFR_DECLSPEC int mpfr_round_raw_4 _MPFR_PROTO ((mp_limb_t *, + const mp_limb_t *, mpfr_prec_t, int, mpfr_prec_t, mpfr_rnd_t)); + +#define mpfr_round_raw2(xp, xn, neg, r, prec) \ + mpfr_round_raw_2((xp),(xn)*GMP_NUMB_BITS,(neg),(prec),(r)) + +__MPFR_DECLSPEC int mpfr_check _MPFR_PROTO ((mpfr_srcptr)); + +__MPFR_DECLSPEC int mpfr_sum_sort _MPFR_PROTO ((mpfr_srcptr *const, + unsigned long, mpfr_srcptr *)); + +__MPFR_DECLSPEC int mpfr_get_cputime _MPFR_PROTO ((void)); + +__MPFR_DECLSPEC void mpfr_nexttozero _MPFR_PROTO ((mpfr_ptr)); +__MPFR_DECLSPEC void mpfr_nexttoinf _MPFR_PROTO ((mpfr_ptr)); + +__MPFR_DECLSPEC int mpfr_const_pi_internal _MPFR_PROTO ((mpfr_ptr,mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_const_log2_internal _MPFR_PROTO((mpfr_ptr,mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_const_euler_internal _MPFR_PROTO((mpfr_ptr, mpfr_rnd_t)); +__MPFR_DECLSPEC int mpfr_const_catalan_internal _MPFR_PROTO((mpfr_ptr, mpfr_rnd_t)); + +#if 0 +__MPFR_DECLSPEC void mpfr_init_cache _MPFR_PROTO ((mpfr_cache_t, + int(*)(mpfr_ptr,mpfr_rnd_t))); +#endif +__MPFR_DECLSPEC void mpfr_clear_cache _MPFR_PROTO ((mpfr_cache_t)); +__MPFR_DECLSPEC int mpfr_cache _MPFR_PROTO ((mpfr_ptr, mpfr_cache_t, + mpfr_rnd_t)); + +__MPFR_DECLSPEC void mpfr_mulhigh_n _MPFR_PROTO ((mpfr_limb_ptr, + mpfr_limb_srcptr, mpfr_limb_srcptr, mp_size_t)); +__MPFR_DECLSPEC void mpfr_mullow_n _MPFR_PROTO ((mpfr_limb_ptr, + mpfr_limb_srcptr, mpfr_limb_srcptr, mp_size_t)); +__MPFR_DECLSPEC void mpfr_sqrhigh_n _MPFR_PROTO ((mpfr_limb_ptr, + mpfr_limb_srcptr, mp_size_t)); +__MPFR_DECLSPEC mp_limb_t mpfr_divhigh_n _MPFR_PROTO ((mpfr_limb_ptr, + mpfr_limb_ptr, mpfr_limb_ptr, mp_size_t)); + +__MPFR_DECLSPEC int mpfr_round_p _MPFR_PROTO ((mp_limb_t *, mp_size_t, + mpfr_exp_t, mpfr_prec_t)); + +__MPFR_DECLSPEC void mpfr_dump_mant _MPFR_PROTO ((const mp_limb_t *, + mpfr_prec_t, mpfr_prec_t, + mpfr_prec_t)); + +__MPFR_DECLSPEC int mpfr_round_near_x _MPFR_PROTO ((mpfr_ptr, mpfr_srcptr, + mpfr_uexp_t, int, + mpfr_rnd_t)); +__MPFR_DECLSPEC void mpfr_abort_prec_max _MPFR_PROTO ((void)) + MPFR_NORETURN_ATTR; + +__MPFR_DECLSPEC void mpfr_rand_raw _MPFR_PROTO((mpfr_limb_ptr, gmp_randstate_t, + mpfr_prec_t)); + +__MPFR_DECLSPEC mpz_t* mpfr_bernoulli_internal _MPFR_PROTO((mpz_t*, + unsigned long)); + +__MPFR_DECLSPEC int mpfr_sincos_fast _MPFR_PROTO((mpfr_t, mpfr_t, + mpfr_srcptr, mpfr_rnd_t)); + +__MPFR_DECLSPEC double mpfr_scale2 _MPFR_PROTO((double, int)); + +__MPFR_DECLSPEC void mpfr_div_ui2 _MPFR_PROTO((mpfr_ptr, mpfr_srcptr, + unsigned long int, unsigned long int, + mpfr_rnd_t)); + +__MPFR_DECLSPEC void mpfr_gamma_one_and_two_third _MPFR_PROTO((mpfr_ptr, mpfr_ptr, mpfr_prec_t)); + +#if defined (__cplusplus) +} +#endif + +#endif |