sysdeps/libm-i387/s_cos.S

   1 /*
   2  * Written by J.T. Conklin <jtc@netbsd.org>.
   3  * Public domain.
   4  */
   5
   6 #include <machine/asm.h>
   7
   8 RCSID("$NetBSD: s_cos.S,v 1.5 1995/05/08 23:54:00 jtc Exp $")
   9
  10 ENTRY(__cos)
  11         fldl    4(%esp)
  12         fcos
  13         fnstsw  %ax
  14         andw    $0x400,%ax
  15         jnz     1f
  16         ret
  17 1:      fldpi
  18         fadd    %st(0)
  19         fxch    %st(1)
  20 2:      fprem1
  21         fnstsw  %ax
  22         andw    $0x400,%ax
  23         jnz     2b
  24         fstp    %st(1)
  25         fcos
  26         ret
  27 PSEUDO_END (__cos)
  28 weak_alias (__cos, cos)