diff options
Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/stack_interface.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-src/src/stack_interface.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/stack_interface.c b/Build/source/libs/mpfr/mpfr-src/src/stack_interface.c new file mode 100644 index 00000000000..a8d4a93de29 --- /dev/null +++ b/Build/source/libs/mpfr/mpfr-src/src/stack_interface.c @@ -0,0 +1,104 @@ +/* mpfr_stack -- initialize a floating-point number with given allocation area + +Copyright 2005-2015 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. */ + +#include "mpfr-impl.h" + +#undef mpfr_custom_get_size +size_t +mpfr_custom_get_size (mpfr_prec_t prec) +{ + return MPFR_PREC2LIMBS (prec) * MPFR_BYTES_PER_MP_LIMB; +} + +#undef mpfr_custom_init +void +mpfr_custom_init (void *mantissa, mpfr_prec_t prec) +{ + return ; +} + +#undef mpfr_custom_get_significand +void * +mpfr_custom_get_significand (mpfr_srcptr x) +{ + return (void*) MPFR_MANT (x); +} + +#undef mpfr_custom_get_exp +mpfr_exp_t +mpfr_custom_get_exp (mpfr_srcptr x) +{ + return MPFR_EXP (x); +} + +#undef mpfr_custom_move +void +mpfr_custom_move (mpfr_ptr x, void *new_position) +{ + MPFR_MANT (x) = (mp_limb_t *) new_position; +} + +#undef mpfr_custom_init_set +void +mpfr_custom_init_set (mpfr_ptr x, int kind, mpfr_exp_t exp, + mpfr_prec_t prec, void *mantissa) +{ + mpfr_kind_t t; + int s; + mpfr_exp_t e; + + if (kind >= 0) + { + t = (mpfr_kind_t) kind; + s = MPFR_SIGN_POS; + } + else + { + t = (mpfr_kind_t) -kind; + s = MPFR_SIGN_NEG; + } + MPFR_ASSERTD (t <= MPFR_REGULAR_KIND); + e = MPFR_LIKELY (t == MPFR_REGULAR_KIND) ? exp : + MPFR_UNLIKELY (t == MPFR_NAN_KIND) ? MPFR_EXP_NAN : + MPFR_UNLIKELY (t == MPFR_INF_KIND) ? MPFR_EXP_INF : MPFR_EXP_ZERO; + + MPFR_PREC (x) = prec; + MPFR_SET_SIGN (x, s); + MPFR_EXP (x) = e; + MPFR_MANT (x) = (mp_limb_t*) mantissa; + return; +} + +#undef mpfr_custom_get_kind +int +mpfr_custom_get_kind (mpfr_srcptr x) +{ + if (MPFR_LIKELY (!MPFR_IS_SINGULAR (x))) + return (int) MPFR_REGULAR_KIND * MPFR_INT_SIGN (x); + if (MPFR_IS_INF (x)) + return (int) MPFR_INF_KIND * MPFR_INT_SIGN (x); + if (MPFR_IS_NAN (x)) + return (int) MPFR_NAN_KIND; + MPFR_ASSERTD (MPFR_IS_ZERO (x)); + return (int) MPFR_ZERO_KIND * MPFR_INT_SIGN (x); +} + |