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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/extract.c')
-rw-r--r-- | Build/source/libs/mpfr/mpfr-src/src/extract.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/extract.c b/Build/source/libs/mpfr/mpfr-src/src/extract.c deleted file mode 100644 index 28b216e6f80..00000000000 --- a/Build/source/libs/mpfr/mpfr-src/src/extract.c +++ /dev/null @@ -1,57 +0,0 @@ -/* mpfr_extract -- bit-extraction function for the binary splitting algorithm - -Copyright 2000-2002, 2004-2020 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" - -/* given 0 <= |p| < 1, this function extracts limbs of p and puts them in y. - It is mainly designed for the "binary splitting" algorithm. - - More precisely, if B = 2^GMP_NUMB_BITS: - - for i=0, y = floor(p * B) - - for i>0, y = (p * B^(2^i)) mod B^(2^(i-1)) - */ - -void -mpfr_extract (mpz_ptr y, mpfr_srcptr p, unsigned int i) -{ - unsigned long two_i = 1UL << i; - unsigned long two_i_2 = i ? two_i / 2 : 1; - mp_size_t size_p = MPFR_LIMB_SIZE (p); - - MPFR_ASSERTN (two_i != 0 && two_i_2 <= INT_MAX); /* overflow check */ - - /* as 0 <= |p| < 1, we don't have to care with infinities, NaN, ... */ - MPFR_ASSERTD (!MPFR_IS_SINGULAR (p)); - - mpz_realloc2 (y, (mp_bitcnt_t) two_i_2 * GMP_NUMB_BITS); - if (size_p < two_i) - { - MPN_ZERO (PTR(y), two_i_2); - if (size_p >= two_i_2) - MPN_COPY (PTR(y) + (two_i - size_p), MPFR_MANT(p), size_p - two_i_2); - } - else - MPN_COPY (PTR(y), MPFR_MANT(p) + size_p - two_i, two_i_2); - - MPN_NORMALIZE (PTR(y), two_i_2); - SIZ(y) = MPFR_IS_NEG (p) ? - (int) two_i_2 : (int) two_i_2; -} |