29 lines
366 B
ArmAsm
29 lines
366 B
ArmAsm
/*
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
RCSID("$NetBSD: s_tan.S,v 1.5 1995/05/09 00:30:00 jtc Exp $")
|
|
|
|
ENTRY(tan)
|
|
fldl 4(%esp)
|
|
fptan
|
|
fnstsw %ax
|
|
andw $0x400,%ax
|
|
jnz 1f
|
|
fstp %st(0)
|
|
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)
|
|
ret
|