diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-96/s_lroundl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/s_lroundl.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/sysdeps/ieee754/ldbl-96/s_lroundl.c b/sysdeps/ieee754/ldbl-96/s_lroundl.c deleted file mode 100644 index 7f418e6142..0000000000 --- a/sysdeps/ieee754/ldbl-96/s_lroundl.c +++ /dev/null @@ -1,111 +0,0 @@ -/* Round long double value to long int. - Copyright (C) 1997-2017 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 - <http://www.gnu.org/licenses/>. */ - -#include <fenv.h> -#include <limits.h> -#include <math.h> - -#include <math_private.h> - - -long int -__lroundl (long double x) -{ - int32_t j0; - u_int32_t se, i1, i0; - long int result; - int sign; - - GET_LDOUBLE_WORDS (se, i0, i1, x); - j0 = (se & 0x7fff) - 0x3fff; - sign = (se & 0x8000) != 0 ? -1 : 1; - - if (j0 < 31) - { - if (j0 < 0) - return j0 < -1 ? 0 : sign; - else - { - u_int32_t j = i0 + (0x40000000 >> j0); - if (j < i0) - { - j >>= 1; - j |= 0x80000000; - ++j0; - } - - result = j >> (31 - j0); -#ifdef FE_INVALID - if (sizeof (long int) == 4 - && sign == 1 - && result == LONG_MIN) - /* Rounding brought the value out of range. */ - feraiseexcept (FE_INVALID); -#endif - } - } - else if (j0 < (int32_t) (8 * sizeof (long int)) - 1) - { - if (j0 >= 63) - result = ((long int) i0 << (j0 - 31)) | (i1 << (j0 - 63)); - else - { - u_int32_t j = i1 + (0x80000000 >> (j0 - 31)); - unsigned long int ures = i0; - - if (j < i1) - ++ures; - - if (j0 == 31) - result = ures; - else - { - result = (ures << (j0 - 31)) | (j >> (63 - j0)); -#ifdef FE_INVALID - if (sizeof (long int) == 8 - && sign == 1 - && result == LONG_MIN) - /* Rounding brought the value out of range. */ - feraiseexcept (FE_INVALID); -#endif - } - } - } - else - { - /* The number is too large. Unless it rounds to LONG_MIN, - FE_INVALID must be raised and the return value is - unspecified. */ -#ifdef FE_INVALID - if (sizeof (long int) == 4 - && x <= (long double) LONG_MIN - 0.5L) - { - /* If truncation produces LONG_MIN, the cast will not raise - the exception, but may raise "inexact". */ - feraiseexcept (FE_INVALID); - return LONG_MIN; - } -#endif - return (long int) x; - } - - return sign * result; -} - -weak_alias (__lroundl, lroundl) |