1/* $OpenBSD: s_logb.S,v 1.4 2018/07/03 22:43:34 mortimer Exp $ */ 2/* 3 * Written by J.T. Conklin <jtc@NetBSD.org>. 4 * Public domain. 5 */ 6 7#include <machine/asm.h> 8 9#include "abi.h" 10 11ENTRY(logb) 12 RETGUARD_SETUP(logb, r11) 13 XMM_ONE_ARG_DOUBLE_PROLOGUE 14 fldl ARG_DOUBLE_ONE 15 fxtract 16 fstp %st 17 XMM_DOUBLE_EPILOGUE 18 RETGUARD_CHECK(logb, r11) 19 ret 20END_STD(logb) 21