diff options
Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/get_sj.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-src/src/get_sj.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/get_sj.c b/Build/source/libs/mpfr/mpfr-src/src/get_sj.c deleted file mode 100644 index 05274848c24..00000000000 --- a/Build/source/libs/mpfr/mpfr-src/src/get_sj.c +++ /dev/null @@ -1,126 +0,0 @@ -/* mpfr_get_sj -- convert a MPFR number to a huge machine signed integer - -Copyright 2004, 2006-2020 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. */ - -#define MPFR_NEED_INTMAX_H -#include "mpfr-impl.h" - -#ifdef _MPFR_H_HAVE_INTMAX_T - -intmax_t -mpfr_get_sj (mpfr_srcptr f, mpfr_rnd_t rnd) -{ - intmax_t r; - mpfr_prec_t prec; - mpfr_t x; - MPFR_SAVE_EXPO_DECL (expo); - - if (MPFR_UNLIKELY (!mpfr_fits_intmax_p (f, rnd))) - { - MPFR_SET_ERANGEFLAG (); - return MPFR_IS_NAN (f) ? 0 : - MPFR_IS_NEG (f) ? INTMAX_MIN : INTMAX_MAX; - } - - if (MPFR_IS_ZERO (f)) - return (intmax_t) 0; - - /* Determine the precision of intmax_t. |INTMAX_MIN| may have one - more bit as an integer, but in this case, this is a power of 2, - thus fits in a precision-prec floating-point number. */ - for (r = INTMAX_MAX, prec = 0; r != 0; r /= 2, prec++) - { } - - MPFR_ASSERTD (r == 0); - - MPFR_SAVE_EXPO_MARK (expo); - - mpfr_init2 (x, prec); - mpfr_rint (x, f, rnd); - MPFR_ASSERTN (MPFR_IS_FP (x)); - - /* The flags from mpfr_rint are the wanted ones. In particular, - it sets the inexact flag when necessary. */ - MPFR_SAVE_EXPO_UPDATE_FLAGS (expo, __gmpfr_flags); - - if (MPFR_NOTZERO (x)) - { - mp_limb_t *xp; - int sh; /* An int should be sufficient in this context. */ - - xp = MPFR_MANT (x); - sh = MPFR_GET_EXP (x); - MPFR_ASSERTN ((mpfr_prec_t) sh <= prec + 1); - if (INTMAX_MIN + INTMAX_MAX != 0 - && MPFR_UNLIKELY ((mpfr_prec_t) sh > prec)) - { - /* 2's complement and x <= INTMAX_MIN: in the case mp_limb_t - has the same size as intmax_t, we cannot use the code in - the for loop since the operations would be performed in - unsigned arithmetic. */ - MPFR_ASSERTD (MPFR_IS_NEG (x) && mpfr_powerof2_raw (x)); - r = INTMAX_MIN; - } - /* sh is the number of bits that remain to be considered in {xp, xn} */ - else - { -#ifdef MPFR_INTMAX_WITHIN_LIMB - MPFR_ASSERTD (sh > 0 && sh < GMP_NUMB_BITS); - r = xp[0] >> (GMP_NUMB_BITS - sh); -#else - int n; - - /* Note: testing the condition sh > 0 is necessary to avoid - an undefined behavior on xp[n] >> S when S >= GMP_NUMB_BITS - (even though xp[n] == 0 in such a case). This can happen if - sizeof(mp_limb_t) < sizeof(intmax_t) and |x| is small enough - because of the trailing bits due to its normalization. */ - for (n = MPFR_LIMB_SIZE (x) - 1; n >= 0 && sh > 0; n--) - { - sh -= GMP_NUMB_BITS; - /* Note the concerning the casts below: - When sh >= 0, the cast must be performed before the shift - for the case sizeof(intmax_t) > sizeof(mp_limb_t). - When sh < 0, the cast must be performed after the shift - for the case sizeof(intmax_t) == sizeof(mp_limb_t), as - mp_limb_t is unsigned, therefore not representable as an - intmax_t when the MSB is 1 (this is the case here). */ - MPFR_ASSERTD (-sh < GMP_NUMB_BITS); - /* each limb should be shifted by sh bits to the left if sh>=0, - and by sh bits to the right if sh < 0 */ - r += sh >= 0 - ? (intmax_t) xp[n] << sh - : (intmax_t) (xp[n] >> (-sh)); - } -#endif - if (MPFR_IS_NEG(x)) - r = -r; - } - } - - mpfr_clear (x); - - MPFR_SAVE_EXPO_FREE (expo); - - return r; -} - -#endif |