lib/libm/arch/i386/e_log2.S

   1 /*
   2  * Written by Rui Paulo <rpaulo@NetBSD.org>, based on e_log.S.
   3  * Public domain.
   4  * $NetBSD: e_log2.S,v 1.1 2005/07/21 20:58:21 rpaulo Exp $
   5  * $DragonFly: src/lib/libm/arch/i386/e_log2.S,v 1.1 2007/06/16 22:26:53 pavalos Exp $
   6  */
   7
   8 #include <machine/asm.h>
   9
  10 #include "abi.h"
  11
  12 ENTRY(log2)
  13         XMM_ONE_ARG_DOUBLE_PROLOGUE
  14         fld1
  15         fldl    ARG_DOUBLE_ONE
  16         fyl2x
  17         XMM_DOUBLE_EPILOGUE
  18         ret