LDEXP(3) MachTen Programmer’s Manual LDEXP(3)

NAME
ldexp - multiply floating-point number by integral power of 2

SYNOPSIS
#include <math.h>

double
ldexp(double x, int exp)

DESCRIPTION
The ldexp() function multiplies a floating-point number by an integral
power of 2.

RETURN VALUES
The ldexp() function returns the value of x times 2 raised to the power
exp.

If the resultant value would cause an overflow, the global variable errno
is set to ERANGE and the value HUGE is returned.

SEE ALSO
frexp(3), modf(3), math(3)

STANDARDS
The ldexp() function conforms ANSI C3.159-1989 (‘‘ANSI C’’).

4.4BSD April 19, 1994 1