1994-02-16 22:21:10 +03:00
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/*
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1995-04-29 02:43:31 +04:00
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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1994-02-16 22:21:10 +03:00
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*/
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#include <machine/asm.h>
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1995-05-09 03:55:16 +04:00
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RCSID("$NetBSD: s_tan.S,v 1.5 1995/05/09 00:30:00 jtc Exp $")
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1994-03-12 04:30:22 +03:00
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1994-02-16 22:21:10 +03:00
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ENTRY(tan)
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fldl 4(%esp)
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fptan
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fnstsw %ax
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andw $0x400,%ax
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1994-02-18 20:38:59 +03:00
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jnz 1f
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fstp %st(0)
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ret
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1: fldpi
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1994-02-16 22:21:10 +03:00
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fadd %st(0)
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fxch %st(1)
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1994-02-18 20:38:59 +03:00
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2: fprem1
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1994-02-16 22:21:10 +03:00
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fstsw %ax
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andw $0x400,%ax
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1994-02-18 20:38:59 +03:00
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jnz 2b
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1994-02-16 22:21:10 +03:00
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fstp %st(1)
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fptan
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1994-02-18 20:38:59 +03:00
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fstp %st(0)
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1994-02-16 22:21:10 +03:00
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ret
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