log2

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Return the base 2 logarithm of the parameter.

Declaration[edit]

genType log2( genType x );


Parameters[edit]

x - Specify the value of which to take the base 2 logarithm.


Description[edit]

 log2 returns the base 2 logarithm of $x$, i.e. the value $y$ which satisfies $x = 2^y$. The result is undefined if $x \leq 0$.


Version Support[edit]

log2 1.1+

See Also[edit]

 exp , log , exp2 


Copyright[edit]

Copyright© 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.