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