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/*
* wrapper log2(X)
*/
#include "math.h"
#include "math_private.h"
float
__log2f (float x) /* wrapper log2f */
{
#ifdef _IEEE_LIBM
return __ieee754_log2f (x);
#else
float z;
z = __ieee754_log2f (x);
if (_LIB_VERSION == _IEEE_ || __isnanf (x)) return z;
if (x <= 0.0f)
{
if (x == 0.0f)
/* log2f (0) */
return __kernel_standard ((double) x, (double) x, 148);
else
/* log2f (x < 0) */
return __kernel_standard ((double) x, (double) x, 149);
}
else
return z;
#endif
}
weak_alias (__log2f, log2f)
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