NAME
log2, log2f, log2l - base-2 logarithmic function
SYNOPSIS
#include <math.h>
I double log2(double x );
I float log2f(float x );
I long double log2l(long double x );
Compile with
-std=c99; link with
-lm.
DESCRIPTION
The
R log2 ()
function returns the base 2 logarithm of x.
ERRORS
The
R log2 ()
function can return the following error:
EDOM
The argument x is negative.
ERANGE
The argument x is zero.
The log of zero is not defined
(minus infinity).
CONFORMING TO
SVr4, 4.3BSD, C89.
The
float
and
long double
variants are C99 requirements.
SEE ALSO
ČLÁNKY DO MAILU