SCALBN(3)

NAME
1.50 `scalbn', `scalbnf', `scalbln', `scalblnf'-scale by power of FLT_RADIX (=2)

SYNOPSIS
     #include <math.h>
     double scalbn(double X, int N);
     float scalbnf(float X, int N);
     double scalbln(double X, long int N);
     float scalblnf(float X, long int N);

DESCRIPTION
The `scalbn' and `scalbln' functions compute X times FLT_RADIX to the power N. efficiently. The result is computed by manipulating the exponent, rather than by actually performing an exponentiation or multiplication. In this floating-point implementation FLT_RADIX=2, which makes the `scalbn' functions equivalent to the `ldexp' functions.

RETURNS
X times 2 to the power N. A range error may occur.

PORTABILITY
ANSI C, POSIX *See Also*
`ldexp'

SEE ALSO
scalbn is part of the library. The full documentation for is maintained as a Texinfo manual. If info and are properly installed at your site, the command

    info

will give you access to the complete manual.