NAME

ldexp, ldexpf, ldexpl —

multiply floating-point number by integral power of 2

LIBRARY

Math Library (libm, -lm)

#include <math.h>

double
ldexp(double x, int exp);

float
ldexpf(float x, int exp);

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

The ldexp(), ldexpf(), and ldexpl() functions multiply a floating-point number by an integral power of 2.

These functions return the value of x times 2 raised to the power exp.

The ldexp(), ldexpf(), and ldexpl() functions conform to ISO/IEC 9899:1999 (“ISO C99”).