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 */
 6long double acosl (long double x);
 7
 8long double acosl (long double x)
 9{
10  long double res = 0.0L;
11
12  /* acosl = atanl (sqrtl(1 - x^2) / x) */
13  asm volatile (
14	"fld	%%st\n\t"
15	"fmul	%%st(0)\n\t"		/* x^2 */
16	"fld1\n\t"
17	"fsubp\n\t"			/* 1 - x^2 */
18	"fsqrt\n\t"			/* sqrtl (1 - x^2) */
19	"fxch	%%st(1)\n\t"
20	"fpatan"
21	: "=t" (res) : "0" (x) : "st(1)");
22  return res;
23}