| 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 | * Changes for long double by Ulrich Drepper <drepper@cygnus.com> |
| 9 | * Public domain. |
| 10 | */ |
| 11 | |
| 12 | #include <math.h> |
| 13 | |
| 14 | long double |
| 15 | logbl (long double x) |
| 16 | { |
| 17 | long double res = 0.0L; |
| 18 | |
| 19 | asm volatile ( |
| 20 | "fxtract\n\t" |
| 21 | "fstp	%%st" : "=t" (res) : "0" (x)); |
| 22 | return res; |
| 23 | } |