sysdeps/powerpc/fpu/s_fmax.S

   1 /* Floating-point maximum.  PowerPC version.
   2    Copyright (C) 1997, 1999 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <sysdep.h>
  21
  22 ENTRY(__fmax)
  23 /* double [f1] fmax (double [f1] x, double [f2] y); */
  24         fcmpu   cr0,fp1,fp2
  25         blt     cr0,0f          /* if x < y, neither x nor y can be NaN... */
  26         bnulr+  cr0
  27 /* x and y are unordered, so one of x or y must be a NaN... */
  28         fcmpu   cr1,fp2,fp2
  29         bunlr   cr1
  30 0:      fmr     fp1,fp2
  31         blr
  32 END(__fmax)
  33
  34 weak_alias (__fmax,fmax)
  35
  36 /* It turns out that it's safe to use this code even for single-precision.  */
  37 strong_alias(__fmax,__fmaxf)
  38 weak_alias (__fmax,fmaxf)
  39
  40 #ifdef NO_LONG_DOUBLE
  41 weak_alias (__fmax,__fmaxl)
  42 weak_alias (__fmax,fmaxl)
  43 #endif