newlib-cygwin/winsup/mingw/mingwex/math/logbf.c

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/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Changes for long double by Ulrich Drepper <drepper@cygnus.com>
* Public domain.
*/
#include <math.h>
float
logbf (float x)
{
float res;
asm ("fxtract\n\t"
"fstp %%st" : "=t" (res) : "0" (x));
return res;
}