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author | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2004-12-22 20:10:10 +0000 |
commit | a334319f6530564d22e775935d9c91663623a1b4 (patch) | |
tree | b5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/ieee754/ldbl-128ibm/s_ceill.c | |
parent | 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff) | |
download | glibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz |
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_ceill.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/s_ceill.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_ceill.c b/sysdeps/ieee754/ldbl-128ibm/s_ceill.c deleted file mode 100644 index 035e4f52ce..0000000000 --- a/sysdeps/ieee754/ldbl-128ibm/s_ceill.c +++ /dev/null @@ -1,91 +0,0 @@ -/* Ceil (round to +inf) long double floating-point values. - IBM extended format long double version. - Copyright (C) 2006 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <math.h> -#include <fenv_libc.h> -#include <math_ldbl_opt.h> -#include <float.h> -#include <ieee754.h> - - -#ifdef __STDC__ -long double -__ceill (long double x) -#else -long double -__ceill (x) - long double x; -#endif -{ - double xh, xl, hi, lo; - - ldbl_unpack (x, &xh, &xl); - - /* Return Inf, Nan, +/-0 unchanged. */ - if (__builtin_expect (xh != 0.0 - && __builtin_isless (__builtin_fabs (xh), - __builtin_inf ()), 1)) - { - double orig_xh; - int save_round = fegetround (); - - /* Long double arithmetic, including the canonicalisation below, - only works in round-to-nearest mode. */ - fesetround (FE_TONEAREST); - - /* Convert the high double to integer. */ - orig_xh = xh; - hi = ldbl_nearbyint (xh); - - /* Subtract integral high part from the value. */ - xh -= hi; - ldbl_canonicalize (&xh, &xl); - - /* Now convert the low double, adjusted for any remainder from the - high double. */ - lo = ldbl_nearbyint (xh); - - /* Adjust the result when the remainder is non-zero. nearbyint - rounds values to the nearest integer, and values halfway - between integers to the nearest even integer. ceill must - round towards +Inf. */ - xh -= lo; - ldbl_canonicalize (&xh, &xl); - - if (xh > 0.0 || (xh == 0.0 && xl > 0.0)) - lo += 1.0; - - /* Ensure the final value is canonical. In certain cases, - rounding causes hi,lo calculated so far to be non-canonical. */ - xh = hi; - xl = lo; - ldbl_canonicalize (&xh, &xl); - - /* Ensure we return -0 rather than +0 when appropriate. */ - if (orig_xh < 0.0) - xh = -__builtin_fabs (xh); - - fesetround (save_round); - } - - return ldbl_pack (xh, xl); -} - -long_double_symbol (libm, __ceill, ceill); |