newlib-cygwin/winsup/cygwin/math/logbl.c

23 lines
516 B
C

/**
* 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 <jtc@netbsd.org>.
* Changes for long double by Ulrich Drepper <drepper@cygnus.com>
* 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;
}