Reference

ldexp(3)

multiply floating-point number by integral power of 2

NAME

ldexp, ldexpf, ldexpl – multiply floating-point number by integral power of 2

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h>

double

ldexp(double x, int exp);

float

ldexpf(float x, int exp);

long double

ldexpl(long double x, int exp);

DESCRIPTION

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

RETURN VALUES

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

SEE ALSO

frexp(3), math(3), modf(3)

STANDARDS

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

History