arch/i387/e_asin.S

     1.1     jtc /*
     1.3     jtc  * Written by J.T. Conklin <jtc (at) netbsd.org>.
     1.3     jtc  * Public domain.
     1.1     jtc  */
     1.1     jtc
     1.1     jtc #include <machine/asm.h>
     1.1     jtc
1.4.16.1  kleink RCSID("$NetBSD: e_asin.S,v 1.4.16.1 2000/09/26 14:29:43 kleink Exp $")
     1.2     jtc
     1.1     jtc /* asin = atan (x / sqrt(1 - x^2)) */
     1.1     jtc ENTRY(__ieee754_asin)
     1.1     jtc 	fldl	4(%esp)			/* x */
1.4.16.1  kleink 	fld	%st(0)
     1.1     jtc 	fmul	%st(0)			/* x^2 */
     1.1     jtc 	fld1
     1.1     jtc 	fsubp				/* 1 - x^2 */
     1.1     jtc 	fsqrt				/* sqrt (1 - x^2) */
     1.1     jtc 	fpatan
     1.1     jtc 	ret