diff options
Diffstat (limited to 'sysdeps/i386/fpu/s_fdim.c')
-rw-r--r-- | sysdeps/i386/fpu/s_fdim.c | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/sysdeps/i386/fpu/s_fdim.c b/sysdeps/i386/fpu/s_fdim.c deleted file mode 100644 index 6243c62998..0000000000 --- a/sysdeps/i386/fpu/s_fdim.c +++ /dev/null @@ -1,50 +0,0 @@ -/* Return positive difference between arguments. i386 version. - Copyright (C) 1997-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <fpu_control.h> -#include <math.h> -#include <math_private.h> - -double -__fdim (double x, double y) -{ - if (islessequal (x, y)) - return 0.0; - - /* To avoid double rounding, set double precision for the - subtraction. math_narrow_eval is still needed to eliminate - excess range in the case of overflow. If the result of the - subtraction is in the subnormal range for double, it is exact, so - no issues of double rounding for subnormals arise. */ - fpu_control_t cw, cw_double; - _FPU_GETCW (cw); - cw_double = (cw & ~_FPU_EXTENDED) | _FPU_DOUBLE; - _FPU_SETCW (cw_double); - double r = math_narrow_eval (x - y); - _FPU_SETCW (cw); - if (isinf (r) && !isinf (x) && !isinf (y)) - __set_errno (ERANGE); - - return r; -} -weak_alias (__fdim, fdim) -#ifdef NO_LONG_DOUBLE -strong_alias (__fdim, __fdiml) -weak_alias (__fdim, fdiml) -#endif |