9 lines
149 B
C
9 lines
149 B
C
#include <math.h>
|
|
float
|
|
log2f (float _x)
|
|
{
|
|
float retval;
|
|
__asm__ ("fyl2x;" : "=t" (retval) : "0" (_x), "u" (1.0L) : "st(1)");
|
|
return retval;
|
|
}
|