[thirdparty/glibc.git] / sysdeps / generic / w_log2f.c

/*
 * 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)
Commit	Line	Data
601d2942 UD	1	/*
	2	* wrapper log2(X)
	3	*/
	4
	5	#include "math.h"
	6	#include "math_private.h"
	7
	8	float
	9	__log2f (float x) /* wrapper log2f */
	10	{
	11	#ifdef _IEEE_LIBM
	12	return __ieee754_log2f (x);
	13	#else
	14	float z;
	15	z = __ieee754_log2f (x);
	16	if (_LIB_VERSION == _IEEE_ \|\| __isnanf (x)) return z;
	17	if (x <= 0.0f)
	18	{
	19	if (x == 0.0f)
	20	/* log2f (0) */
	21	return __kernel_standard ((double) x, (double) x, 148);
	22	else
	23	/* log2f (x < 0) */
	24	return __kernel_standard ((double) x, (double) x, 149);
	25	}
	26	else
	27	return z;
	28	#endif
	29	}
	30	weak_alias (__log2f, log2f)