| /** | |
| * This file has no copyright assigned and is placed in the Public Domain. | |
| * This file is part of the w64 mingw-runtime package. | |
| * No warranty is given; refer to the file DISCLAIMER within this package. | |
| */ | |
| /* | |
| * Written by J.T. Conklin <jtc@netbsd.org>. | |
| * Public domain. | |
| * Adapted for long double type by Danny Smith <dannysmith@users.sourceforge.net>. | |
| */ | |
| /* asin = atan (x / sqrt(1 - x^2)) */ | |
| long double asinl (long double x) | |
| { | |
| long double res; | |
| asm ( "fld %%st\n\t" | |
| "fmul %%st(0)\n\t" /* x^2 */ | |
| "fld1\n\t" | |
| "fsubp\n\t" /* 1 - x^2 */ | |
| "fsqrt\n\t" /* sqrt (1 - x^2) */ | |
| "fpatan" | |
| : "=t" (res) : "0" (x) : "st(1)"); | |
| return res; | |
| } |