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-rw-r--r--Build/source/libs/mpfr/mpfr-src/src/get_ld.c339
1 files changed, 0 insertions, 339 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/get_ld.c b/Build/source/libs/mpfr/mpfr-src/src/get_ld.c
deleted file mode 100644
index 6b6a5b9df6c..00000000000
--- a/Build/source/libs/mpfr/mpfr-src/src/get_ld.c
+++ /dev/null
@@ -1,339 +0,0 @@
-/* mpfr_get_ld, mpfr_get_ld_2exp -- convert a multiple precision floating-point
- number to a machine long double
-
-Copyright 2002-2020 Free Software Foundation, Inc.
-Contributed by the AriC and Caramba 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
-https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
-51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
-
-#include <float.h> /* needed so that MPFR_LDBL_MANT_DIG is correctly defined */
-
-#include "mpfr-impl.h"
-
-#if defined(HAVE_LDOUBLE_IS_DOUBLE)
-
-/* special code when "long double" is the same format as "double" */
-long double
-mpfr_get_ld (mpfr_srcptr x, mpfr_rnd_t rnd_mode)
-{
- return (long double) mpfr_get_d (x, rnd_mode);
-}
-
-#elif defined(HAVE_LDOUBLE_IEEE_EXT_LITTLE)
-
-/* Note: The code will return a result with a 64-bit precision, even
- if the rounding precision is only 53 bits like on FreeBSD and
- NetBSD 6- (or with GCC's -mpc64 option to simulate this on other
- platforms). This is consistent with how strtold behaves in these
- cases, for instance. */
-
-/* special code for IEEE 754 little-endian extended format */
-long double
-mpfr_get_ld (mpfr_srcptr x, mpfr_rnd_t rnd_mode)
-{
- mpfr_long_double_t ld;
- mpfr_t tmp;
- int inex;
- MPFR_SAVE_EXPO_DECL (expo);
-
- MPFR_SAVE_EXPO_MARK (expo);
-
- mpfr_init2 (tmp, MPFR_LDBL_MANT_DIG);
- inex = mpfr_set (tmp, x, rnd_mode);
-
- mpfr_set_emin (-16381-63); /* emin=-16444, see below */
- mpfr_set_emax (16384);
- mpfr_subnormalize (tmp, mpfr_check_range (tmp, inex, rnd_mode), rnd_mode);
- mpfr_prec_round (tmp, 64, MPFR_RNDZ); /* exact */
- if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (tmp)))
- ld.ld = (long double) mpfr_get_d (tmp, rnd_mode);
- else
- {
- mp_limb_t *tmpmant;
- mpfr_exp_t e, denorm;
-
- tmpmant = MPFR_MANT (tmp);
- e = MPFR_GET_EXP (tmp);
- /* The smallest positive normal number is 2^(-16382), which is
- 0.5*2^(-16381) in MPFR, thus any exponent <= -16382 corresponds to a
- subnormal number. The smallest positive subnormal number is 2^(-16445)
- which is 0.5*2^(-16444) in MPFR thus 0 <= denorm <= 63. */
- denorm = MPFR_UNLIKELY (e <= -16382) ? - e - 16382 + 1 : 0;
- MPFR_ASSERTD (0 <= denorm && denorm < 64);
-#if GMP_NUMB_BITS >= 64
- ld.s.manl = (tmpmant[0] >> denorm);
- ld.s.manh = (tmpmant[0] >> denorm) >> 32;
-#elif GMP_NUMB_BITS == 32
- if (MPFR_LIKELY (denorm == 0))
- {
- ld.s.manl = tmpmant[0];
- ld.s.manh = tmpmant[1];
- }
- else if (denorm < 32)
- {
- ld.s.manl = (tmpmant[0] >> denorm) | (tmpmant[1] << (32 - denorm));
- ld.s.manh = tmpmant[1] >> denorm;
- }
- else /* 32 <= denorm < 64 */
- {
- ld.s.manl = tmpmant[1] >> (denorm - 32);
- ld.s.manh = 0;
- }
-#elif GMP_NUMB_BITS == 16
- if (MPFR_LIKELY (denorm == 0))
- {
- /* manl = tmpmant[1] | tmpmant[0]
- manh = tmpmant[3] | tmpmant[2] */
- ld.s.manl = tmpmant[0] | ((unsigned long) tmpmant[1] << 16);
- ld.s.manh = tmpmant[2] | ((unsigned long) tmpmant[3] << 16);
- }
- else if (denorm < 16)
- {
- /* manl = low(mant[2],denorm) | mant[1] | high(mant[0],16-denorm)
- manh = mant[3] | high(mant[2],16-denorm) */
- ld.s.manl = (tmpmant[0] >> denorm)
- | ((unsigned long) tmpmant[1] << (16 - denorm))
- | ((unsigned long) tmpmant[2] << (32 - denorm));
- ld.s.manh = (tmpmant[2] >> denorm)
- | ((unsigned long) tmpmant[3] << (16 - denorm));
- }
- else if (denorm == 16)
- {
- /* manl = tmpmant[2] | tmpmant[1]
- manh = 0000000000 | tmpmant[3] */
- ld.s.manl = tmpmant[1] | ((unsigned long) tmpmant[2] << 16);
- ld.s.manh = tmpmant[3];
- }
- else if (denorm < 32)
- {
- /* manl = low(mant[3],denorm-16) | mant[2] | high(mant[1],32-denorm)
- manh = high(mant[3],32-denorm) */
- ld.s.manl = (tmpmant[1] >> (denorm - 16))
- | ((unsigned long) tmpmant[2] << (32 - denorm))
- | ((unsigned long) tmpmant[3] << (48 - denorm));
- ld.s.manh = tmpmant[3] >> (denorm - 16);
- }
- else if (denorm == 32)
- {
- /* manl = tmpmant[3] | tmpmant[2]
- manh = 0 */
- ld.s.manl = tmpmant[2] | ((unsigned long) tmpmant[3] << 16);
- ld.s.manh = 0;
- }
- else if (denorm < 48)
- {
- /* manl = zero(denorm-32) | tmpmant[3] | high(tmpmant[2],48-denorm)
- manh = 0 */
- ld.s.manl = (tmpmant[2] >> (denorm - 32))
- | ((unsigned long) tmpmant[3] << (48 - denorm));
- ld.s.manh = 0;
- }
- else /* 48 <= denorm < 64 */
- {
- /* we assume a right shift of 0 is identity */
- ld.s.manl = tmpmant[3] >> (denorm - 48);
- ld.s.manh = 0;
- }
-#elif GMP_NUMB_BITS == 8
- {
- unsigned long long mant = 0;
- int i;
- for (i = 0; i < 8; i++)
- mant |= ((unsigned long) tmpmant[i] << (8*i));
- mant >>= denorm;
- ld.s.manl = mant;
- ld.s.manh = mant >> 32;
- }
-#else
-# error "GMP_NUMB_BITS must be 16, 32 or >= 64"
- /* Other values have never been supported anyway. */
-#endif
- if (MPFR_LIKELY (denorm == 0))
- {
- ld.s.exph = (e + 0x3FFE) >> 8;
- ld.s.expl = (e + 0x3FFE);
- }
- else
- ld.s.exph = ld.s.expl = 0;
- ld.s.sign = MPFR_IS_NEG (x);
- }
-
- mpfr_clear (tmp);
- MPFR_SAVE_EXPO_FREE (expo);
- return ld.ld;
-}
-
-#else
-
-/* generic code */
-long double
-mpfr_get_ld (mpfr_srcptr x, mpfr_rnd_t rnd_mode)
-{
- if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (x)))
- return (long double) mpfr_get_d (x, rnd_mode);
- else /* now x is a normal non-zero number */
- {
- long double r; /* result */
- double s; /* part of result */
- MPFR_SAVE_EXPO_DECL (expo);
-
- MPFR_SAVE_EXPO_MARK (expo);
-
-#if defined(HAVE_LDOUBLE_MAYBE_DOUBLE_DOUBLE)
- if (MPFR_LDBL_MANT_DIG == 106)
- {
- /* Assume double-double format (as found with the PowerPC ABI).
- The generic code below isn't used because numbers with
- precision > 106 would not be supported. */
- s = mpfr_get_d (x, MPFR_RNDN); /* high part of x */
- /* Let's first consider special cases separately. The test for
- infinity is really needed to avoid a NaN result. The test
- for NaN is mainly for optimization. The test for 0 is useful
- to get the correct sign (assuming mpfr_get_d supports signed
- zeros on the implementation). */
- if (s == 0 || DOUBLE_ISNAN (s) || DOUBLE_ISINF (s))
- r = (long double) s;
- else
- {
- mpfr_t y, z;
-
- mpfr_init2 (y, mpfr_get_prec (x));
- mpfr_init2 (z, IEEE_DBL_MANT_DIG); /* keep the precision small */
- mpfr_set_d (z, s, MPFR_RNDN); /* exact */
- mpfr_sub (y, x, z, MPFR_RNDN); /* exact */
- /* Add the second part of y (in the correct rounding mode). */
- r = (long double) s + (long double) mpfr_get_d (y, rnd_mode);
- mpfr_clear (z);
- mpfr_clear (y);
- }
- }
- else
-#endif
- {
- long double m;
- mpfr_exp_t sh; /* exponent shift -> x/2^sh is in the double range */
- mpfr_t y, z;
- int sign;
-
- /* First round x to the target long double precision, so that
- all subsequent operations are exact (this avoids double rounding
- problems). However if the format contains numbers that have more
- precision, MPFR won't be able to generate such numbers. */
- mpfr_init2 (y, MPFR_LDBL_MANT_DIG);
- mpfr_init2 (z, MPFR_LDBL_MANT_DIG);
- /* Note about the precision of z: even though IEEE_DBL_MANT_DIG is
- sufficient, z has been set to the same precision as y so that
- the mpfr_sub below calls mpfr_sub1sp, which is faster than the
- generic subtraction, even in this particular case (from tests
- done by Patrick Pelissier on a 64-bit Core2 Duo against r7285).
- But here there is an important cancellation in the subtraction.
- TODO: get more information about what has been tested. */
-
- mpfr_set (y, x, rnd_mode);
- sh = MPFR_GET_EXP (y);
- sign = MPFR_SIGN (y);
- MPFR_SET_EXP (y, 0);
- MPFR_SET_POS (y);
-
- r = 0.0;
- do
- {
- s = mpfr_get_d (y, MPFR_RNDN); /* high part of y */
- r += (long double) s;
- mpfr_set_d (z, s, MPFR_RNDN); /* exact */
- mpfr_sub (y, y, z, MPFR_RNDN); /* exact */
- }
- while (!MPFR_IS_ZERO (y));
-
- mpfr_clear (z);
- mpfr_clear (y);
-
- /* we now have to multiply back by 2^sh */
- MPFR_ASSERTD (r > 0);
- if (sh != 0)
- {
- /* An overflow may occur (example: 0.5*2^1024) */
- while (r < 1.0)
- {
- r += r;
- sh--;
- }
-
- if (sh > 0)
- m = 2.0;
- else
- {
- m = 0.5;
- sh = -sh;
- }
-
- for (;;)
- {
- if (sh % 2)
- r = r * m;
- sh >>= 1;
- if (sh == 0)
- break;
- m = m * m;
- }
- }
- if (sign < 0)
- r = -r;
- }
- MPFR_SAVE_EXPO_FREE (expo);
- return r;
- }
-}
-
-#endif
-
-/* contributed by Damien Stehle */
-long double
-mpfr_get_ld_2exp (long *expptr, mpfr_srcptr src, mpfr_rnd_t rnd_mode)
-{
- long double ret;
- mpfr_exp_t exp;
- mpfr_t tmp;
-
- if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (src)))
- return (long double) mpfr_get_d_2exp (expptr, src, rnd_mode);
-
- MPFR_ALIAS (tmp, src, MPFR_SIGN (src), 0);
- ret = mpfr_get_ld (tmp, rnd_mode);
-
- exp = MPFR_GET_EXP (src);
-
- /* rounding can give 1.0, adjust back to 0.5 <= abs(ret) < 1.0 */
- if (ret == 1.0)
- {
- ret = 0.5;
- exp ++;
- }
- else if (ret == -1.0)
- {
- ret = -0.5;
- exp ++;
- }
-
- MPFR_ASSERTN ((ret >= 0.5 && ret < 1.0)
- || (ret <= -0.5 && ret > -1.0));
- MPFR_ASSERTN (exp >= LONG_MIN && exp <= LONG_MAX);
-
- *expptr = exp;
- return ret;
-}