diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/wordsize-64/s_remquo.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_remquo.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_remquo.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_remquo.c deleted file mode 100644 index cbaa7f79a2..0000000000 --- a/sysdeps/ieee754/dbl-64/wordsize-64/s_remquo.c +++ /dev/null @@ -1,111 +0,0 @@ -/* Compute remainder and a congruent to the quotient. - Copyright (C) 1997-2021 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. - - The GNU C 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 2.1 of the License, or (at your option) any later version. - - The GNU C 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 C Library; if not, see - <https://www.gnu.org/licenses/>. */ - -#include <math.h> - -#include <math_private.h> -#include <libm-alias-double.h> -#include <stdint.h> - -static const double zero = 0.0; - - -double -__remquo (double x, double y, int *quo) -{ - int64_t hx, hy; - uint64_t sx, qs; - int cquo; - - EXTRACT_WORDS64 (hx, x); - EXTRACT_WORDS64 (hy, y); - sx = hx & UINT64_C(0x8000000000000000); - qs = sx ^ (hy & UINT64_C(0x8000000000000000)); - hy &= UINT64_C(0x7fffffffffffffff); - hx &= UINT64_C(0x7fffffffffffffff); - - /* Purge off exception values. */ - if (__glibc_unlikely (hy == 0)) - return (x * y) / (x * y); /* y = 0 */ - if (__builtin_expect (hx >= UINT64_C(0x7ff0000000000000) /* x not finite */ - || hy > UINT64_C(0x7ff0000000000000), 0))/* y is NaN */ - return (x * y) / (x * y); - - if (hy <= UINT64_C(0x7fbfffffffffffff)) - x = __ieee754_fmod (x, 8 * y); /* now x < 8y */ - - if (__glibc_unlikely (hx == hy)) - { - *quo = qs ? -1 : 1; - return zero * x; - } - - x = fabs (x); - INSERT_WORDS64 (y, hy); - cquo = 0; - - if (hy <= UINT64_C(0x7fcfffffffffffff) && x >= 4 * y) - { - x -= 4 * y; - cquo += 4; - } - if (hy <= UINT64_C(0x7fdfffffffffffff) && x >= 2 * y) - { - x -= 2 * y; - cquo += 2; - } - - if (hy < UINT64_C(0x0020000000000000)) - { - if (x + x > y) - { - x -= y; - ++cquo; - if (x + x >= y) - { - x -= y; - ++cquo; - } - } - } - else - { - double y_half = 0.5 * y; - if (x > y_half) - { - x -= y; - ++cquo; - if (x >= y_half) - { - x -= y; - ++cquo; - } - } - } - - *quo = qs ? -cquo : cquo; - - /* Ensure correct sign of zero result in round-downward mode. */ - if (x == 0.0) - x = 0.0; - if (sx) - x = -x; - return x; -} -libm_alias_double (__remquo, remquo) |