[dragonfly.git] / lib / libm / arch / i386 / e_asin.S

/*
 * Written by J.T. Conklin <jtc@NetBSD.org>.
 * Public domain.
 *
 * $NetBSD: e_asin.S,v 1.7 2003/07/26 19:24:58 salo Exp $
 */

#include <machine/asm.h>

#include "abi.h"

/* asin = atan (x / sqrt(1 - x^2)) */
ENTRY(asin)
	XMM_ONE_ARG_DOUBLE_PROLOGUE
	fldl	ARG_DOUBLE_ONE		/* x */
	fld	%st(0)
	fmul	%st(0)			/* x^2 */
	fld1
	fsubp				/* 1 - x^2 */
	fsqrt				/* sqrt (1 - x^2) */
	fpatan
	XMM_DOUBLE_EPILOGUE
	ret
END(asin)

	.section .note.GNU-stack,"",%progbits
Commit	Line	Data
b34b60bc JS	1	/*
	2	* Written by J.T. Conklin <jtc@NetBSD.org>.
	3	* Public domain.
	4	*
	5	* $NetBSD: e_asin.S,v 1.7 2003/07/26 19:24:58 salo Exp $
b34b60bc JS	6	*/
	7
	8	#include <machine/asm.h>
	9
	10	#include "abi.h"
	11
	12	/* asin = atan (x / sqrt(1 - x^2)) */
	13	ENTRY(asin)
	14	XMM_ONE_ARG_DOUBLE_PROLOGUE
	15	fldl ARG_DOUBLE_ONE /* x */
	16	fld %st(0)
	17	fmul %st(0) /* x^2 */
	18	fld1
	19	fsubp /* 1 - x^2 */
	20	fsqrt /* sqrt (1 - x^2) */
	21	fpatan
	22	XMM_DOUBLE_EPILOGUE
	23	ret
d04e8698	24	END(asin)
70e34eb2 JM	25
70e34eb2 JM	26	.section .note.GNU-stack,"",%progbits