1/*
2 * Written by J.T. Conklin <jtc@netbsd.org>.
3 * Public domain.
4 */
5
6#include <machine/asm.h>
7
8RCSID("$NetBSD: e_asin.S,v 1.4 1995/05/08 23:45:40 jtc Exp $")
9
10/* asin = atan (x / sqrt(1 - x^2)) */
11ENTRY(__ieee754_asin)
12	fldl	4(%esp)			/* x */
13	fld	%st
14	fmul	%st(0)			/* x^2 */
15	fld1
16	fsubp				/* 1 - x^2 */
17	fsqrt				/* sqrt (1 - x^2) */
18	fpatan
19	ret
20END (__ieee754_asin)
21