1/* $OpenBSD: s_sin.S,v 1.3 2016/09/12 19:47:01 guenther 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(sin) 12 XMM_ONE_ARG_DOUBLE_PROLOGUE 13 fldl ARG_DOUBLE_ONE 14 fsin 15 fnstsw %ax 16 andw $0x400,%ax 17 jnz 1f 18 XMM_DOUBLE_EPILOGUE 19 ret 201: fldpi 21 fadd %st(0) 22 fxch %st(1) 232: fprem1 24 fnstsw %ax 25 andw $0x400,%ax 26 jnz 2b 27 fstp %st(1) 28 fsin 29 XMM_DOUBLE_EPILOGUE 30 ret 31END_STD(sin) 32