[thirdparty/glibc.git] / math / w_exp2_compat.c

/*
 * wrapper exp2(x)
 */

#include <math.h>
#include <math_private.h>
#include <math-svid-compat.h>

double
__exp2 (double x)
{
  double z = __ieee754_exp2 (x);
  if (__builtin_expect (!isfinite (z) || z == 0, 0)
      && isfinite (x) && _LIB_VERSION != _IEEE_)
    /* exp2 overflow: 44, exp2 underflow: 45 */
    return __kernel_standard (x, x, 44 + !!signbit (x));

  return z;
}
weak_alias (__exp2, exp2)
#ifdef NO_LONG_DOUBLE
strong_alias (__exp2, __exp2l)
weak_alias (__exp2, exp2l)
#endif
Commit	Line	Data
650425ce UD	1	/*
	2	* wrapper exp2(x)
	3	*/
	4
9d13fb24	5	#include <math.h>
9277c064	6	#include <math_private.h>
813378e9	7	#include <math-svid-compat.h>
650425ce	8
650425ce	9	double
0ac5ae23	10	__exp2 (double x)
650425ce	11	{
0cb7efc5	12	double z = __ieee754_exp2 (x);
d81f90cc WD	13	if (__builtin_expect (!isfinite (z) \|\| z == 0, 0)
d81f90cc WD	14	&& isfinite (x) && _LIB_VERSION != _IEEE_)
0ac5ae23	15	/* exp2 overflow: 44, exp2 underflow: 45 */
d81f90cc	16	return __kernel_standard (x, x, 44 + !!signbit (x));
0ac5ae23	17
0cb7efc5	18	return z;
650425ce UD	19	}
	20	weak_alias (__exp2, exp2)
	21	#ifdef NO_LONG_DOUBLE
becf77cd RM	22	strong_alias (__exp2, __exp2l)
becf77cd RM	23	weak_alias (__exp2, exp2l)
650425ce	24	#endif