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Manual Reference Pages  - EXP (3)

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log2, log2f, log2l - base-2 logarithmic function

CONTENTS

Synopsis
Description
Errors

#include <math.h> 



double log2(double x); 



float log2f(float x); 



long double log2l(long double x); 

The log2() function returns the natural logarithm of x.

The log2() function can return the following error:

EDOM	The argument x is negative.

SVID 3, POSIX, BSD 4.3, ISO 9899. The float and the long double variants are C99 requirements.

sqrt(3), cbrt(3)

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