s_tan.S revision 1.1
1/* 2 * Written by J.T. Conklin <jtc@netbsd.org>. 3 * Public domain. 4 */ 5 6#include <machine/asm.h> 7 8RCSID("$NetBSD: s_tan.S,v 1.5 1995/05/09 00:30:00 jtc Exp $") 9 10ENTRY(tan) 11 fldl 4(%esp) 12 fptan 13 fnstsw %ax 14 andw $0x400,%ax 15 jnz 1f 16 fstp %st(0) 17 ret 181: fldpi 19 fadd %st(0) 20 fxch %st(1) 212: fprem1 22 fstsw %ax 23 andw $0x400,%ax 24 jnz 2b 25 fstp %st(1) 26 fptan 27 fstp %st(0) 28 ret 29