| /* | |
| * 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) |