about summary refs log tree commit diff
path: root/sysdeps/i386/fpu/s_fdim.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/i386/fpu/s_fdim.c')
-rw-r--r--sysdeps/i386/fpu/s_fdim.c50
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