lib/libm/arch/i386/s_ilogb.S

   1 /*
   2  * Written by J.T. Conklin <jtc@NetBSD.org>.
   3  * Public domain.
   4  *
   5  * $NetBSD: s_ilogb.S,v 1.7 2003/07/26 19:25:02 salo Exp $
   6  * $DragonFly: src/lib/libm/arch/i386/s_ilogb.S,v 1.1 2005/07/26 21:15:19 joerg Exp $
   7  */
   8
   9 #include <machine/asm.h>
  10
  11 ENTRY(ilogb)
  12 #ifdef __i386__
  13         pushl   %ebp
  14         movl    %esp,%ebp
  15         subl    $4,%esp
  16
  17         fldl    8(%ebp)
  18         fxtract
  19         fstp    %st
  20
  21         fistpl  -4(%ebp)
  22         movl    -4(%ebp),%eax
  23
  24         leave
  25 #else
  26         movsd   %xmm0,-8(%rsp)
  27         fldl    -8(%rsp)
  28         fxtract
  29         fstp    %st
  30         fistpl  -8(%rsp)
  31         movl    -8(%rsp),%eax
  32 #endif
  33         ret