summaryrefslogtreecommitdiffstats
path: root/winsup/cygwin/math/logbl.c
blob: 310c4457b45e5f3d14991ac3eac3ab68babd6e90 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
/**
 * 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;
}