NAME

ldexp — multiply by integer power of 2

SYNOPSIS

#include <math.h>

double
ldexp(double x, int n);

long double
ldexpl(long double x, int n);

float
ldexpf(float x, int n);

DESCRIPTION

The ldexp() functions multiply x by 2 to the power n.

SPECIAL VALUES

ldexp(±0, n) returns ±0.

ldexp(x, 0) returns x.

ldexp(±infinity, n) returns ±infinity.

SEE ALSO

math(3), scalbn(3)

STANDARDS

The ldexp() functions conform to ISO/IEC 9899:2011.