scalbn, scalbnf
[scale by integer]

SYNOPSIS
#include <math.h> 
double scalbn(double x, int y); 
float scalbnf(float x, int y);

DESCRIPTION
scalbn and scalbnf scale x by n, returning x times 2 to the power, n. The result is computed by manipulating the exponent, rather than by actually performing an exponentiation or multiplication.

RETURNS
x times 2 to the power, n.

COMPLIANCE
Neither scalbn nor scalbnf is required by ANSI C or by the System V Interface Definition (Issue 2).