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/*
* Written by J.T. Conklin <jtc@NetBSD.org>.
* Public domain.
*/
#include <machine/asm.h>
#include "abi.h"
RCSID("$NetBSD: s_tan.S,v 1.7 2003/07/26 19:25:04 salo Exp $")
ENTRY(tan)
XMM_ONE_ARG_DOUBLE_PROLOGUE
fldl ARG_DOUBLE_ONE
fptan
fnstsw %ax
andw $0x400,%ax
jnz 1f
fstp %st(0)
XMM_DOUBLE_EPILOGUE
ret
1: fldpi
fadd %st(0)
fxch %st(1)
2: fprem1
fstsw %ax
andw $0x400,%ax
jnz 2b
fstp %st(1)
fptan
fstp %st(0)
XMM_DOUBLE_EPILOGUE
ret
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