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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/check.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-src/src/check.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/check.c b/Build/source/libs/mpfr/mpfr-src/src/check.c deleted file mode 100644 index dedecf52d09..00000000000 --- a/Build/source/libs/mpfr/mpfr-src/src/check.c +++ /dev/null @@ -1,81 +0,0 @@ -/* mpfr_check -- Check if a floating-point number has not been corrupted. - -Copyright 2003-2004, 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. */ - -#include "mpfr-impl.h" - -/* - * Check if x is a valid mpfr_t initialized by mpfr_init - * Returns 0 if isn't valid - * - * Note: Due to the MPFR_GET_ALLOC_SIZE test, this function must not - * be called on statically allocated numbers (only used inside MPFR). - * Anyway, this test should not be useful on such numbers. - */ -int -mpfr_check (mpfr_srcptr x) -{ - mp_size_t s, i; - mp_limb_t tmp; - volatile mp_limb_t *xm; - mpfr_prec_t prec; - int rw; - - /* Check sign */ - if (MPFR_SIGN(x) != MPFR_SIGN_POS && - MPFR_SIGN(x) != MPFR_SIGN_NEG) - return 0; - /* Check precision */ - prec = MPFR_PREC(x); - if (! MPFR_PREC_COND (prec)) - return 0; - /* Check mantissa */ - xm = MPFR_MANT(x); - if (xm == NULL) - return 0; - /* Check size of mantissa */ - s = MPFR_GET_ALLOC_SIZE(x); - if (s <= 0 || s > MP_SIZE_T_MAX || - prec > (mpfr_prec_t) s * GMP_NUMB_BITS) - return 0; - /* Access all the mp_limb of the mantissa: may do a seg fault */ - for (i = 0 ; i < s ; i++) - tmp = xm[i]; - /* Check singular numbers (do not use MPFR_IS_PURE_FP() in order to avoid - any assertion checking, as this function mpfr_check() does something - similar by returning a Boolean instead of doing an abort if the format - is incorrect). */ - if (MPFR_IS_SINGULAR (x)) - return MPFR_IS_ZERO(x) || MPFR_IS_NAN(x) || MPFR_IS_INF(x); - /* Check the most significant limb (its MSB must be 1) */ - if (! MPFR_IS_NORMALIZED (x)) - return 0; - /* Check the least significant limb (the trailing bits must be 0) */ - rw = prec % GMP_NUMB_BITS; - if (rw != 0) - { - tmp = MPFR_LIMB_MASK (GMP_NUMB_BITS - rw); - if ((xm[0] & tmp) != 0) - return 0; - } - /* Check exponent range */ - return MPFR_EXP_IN_RANGE (MPFR_EXP (x)); -} |