1/**
 2 * This file has no copyright assigned and is placed in the Public Domain.
 3 * This file is part of the mingw-w64 runtime package.
 4 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 5 */
 6/*
 7 * Written by J.T. Conklin <jtc@netbsd.org>.
 8 * Public domain.
 9 */
10
11/* asin = atan (x / sqrt(1 - x^2)) */
12
13float asinf (float x);
14
15float asinf (float x)
16{
17  float res = 0.0F;
18
19  asm volatile (
20	"fld	%%st\n\t"
21	"fmul	%%st(0)\n\t"			/* x^2 */
22	"fld1\n\t"
23	"fsubp\n\t"				/* 1 - x^2 */
24	"fsqrt\n\t"				/* sqrt (1 - x^2) */
25	"fpatan"
26	: "=t" (res) : "0" (x) : "st(1)");
27  return res;
28}