s_sinf.s

glibc 2.9,最新版的C语言库函数

/*
 * Written by J.T. Conklin <[e-mail]>.
 * Public domain.
 */

#include <machine/asm.h>

RCSID("$NetBSD: s_sinf.S,v 1.3 1995/05/09 00:27:53 jtc Exp $")

ENTRY(__sinf)
	flds	4(%esp)
	fsin
	fnstsw	%ax
	testl	$0x400,%eax
	jnz	1f
	ret
	.align ALIGNARG(4)
1:	fldpi
	fadd	%st(0)
	fxch	%st(1)
2:	fprem1
	fnstsw	%ax
	testl	$0x400,%eax
	jnz	2b
	fstp	%st(1)
	fsin
	ret
END (__sinf)
weak_alias (__sinf, sinf)