summaryrefslogtreecommitdiff
path: root/Build/source/libs/mpfr/mpfr-src/src/get_sj.c
diff options
context:
space:
mode:
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.c126
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