1LOG2(3)                    Linux Programmer's Manual                   LOG2(3)
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NAME

6       log2, log2f, log2l - base-2 logarithmic function
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SYNOPSIS

9       #include <math.h>
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11       double log2(double x);
12       float log2f(float x);
13       long double log2l(long double x);
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15       Compile with -std=c99; link with -lm.
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DESCRIPTION

18       The log2() function returns the base 2 logarithm of x.
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ERRORS

21       The log2() function can return the following error:
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23       EDOM   The argument x is negative.
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25       ERANGE The  argument  x is zero.  The log of zero is not defined (minus
26              infinity).
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CONFORMING TO

29       SVr4, 4.3BSD, C89.  The float and long double variants are C99 require‐
30       ments.
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SEE ALSO

33       cbrt(3), clog2(3), sqrt(3)
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37                                  2002-07-27                           LOG2(3)
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