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* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the mingw-w64 runtime package.
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
* Written by J.T. Conklin <>.
* Changes for long double by Ulrich Drepper <>
* Public domain.
#include <math.h>
long double
logbl (long double x)
long double res = 0.0L;
asm ("fxtract\n\t"
"fstp %%st" : "=t" (res) : "0" (x));
return res;