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
logbl(long double x)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 }
24