blob: 154cb6f66215fc8ab0bd3998044fc2aac177f445 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
/* $OpenBSD: e_acos.S,v 1.2 2005/08/02 11:17:31 espie Exp $ */
/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Public domain.
*/
#include <machine/asm.h>
/* acos = atan (sqrt(1 - x^2) / x) */
ENTRY(__ieee754_acos)
fldl 4(%esp) /* x */
fst %st(1)
fmul %st(0) /* x^2 */
fld1
fsubp /* 1 - x^2 */
fsqrt /* sqrt (1 - x^2) */
fxch %st(1)
fpatan
ret
|
