log2 man page on YellowDog

log2 man page on YellowDog

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

NAME
       log2, log2f, log2l - base-2 logarithmic function

SYNOPSIS
       #include <math.h>

       double log2(double x);
       float log2f(float x);
       long double log2l(long double x);

       Compile with -std=c99; link with -lm.

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

ERRORS
       The 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 require‐
       ments.

SEE ALSO
       cbrt(3), clog2(3), sqrt(3)

				  2002-07-27			       LOG2(3)

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