/* | |
* Written by J.T. Conklin <jtc@netbsd.org>. | |
* Public domain. | |
*/ | |
#include <machine/asm.h> | |
RCSID("$NetBSD: e_asin.S,v 1.4 1995/05/08 23:45:40 jtc Exp $") | |
/* asin = atan (x / sqrt((1-x) (1+x))) */ | |
ENTRY(__ieee754_asin) | |
fldl 4(%esp) /* x */ | |
fld %st | |
fld1 /* 1 : x : x */ | |
fsubp /* 1 - x : x */ | |
fld1 /* 1 : 1 - x : x */ | |
fadd %st(2) /* 1 + x : 1 - x : x */ | |
fmulp /* 1 - x^2 */ | |
fsqrt /* sqrt (1 - x^2) */ | |
fpatan | |
ret | |
END (__ieee754_asin) | |
strong_alias (__ieee754_asin, __asin_finite) |