genode/repos/libports/src/lib/libc/log2.c

27 lines
444 B
C

/*
* \brief Preliminary 'log2()' and 'log2f()' implementations
* \author Christian Prochaska
* \date 2012-03-06
*/
/*
* Copyright (C) 2008-2017 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#include <math.h>
double log2(double x)
{
return log(x) / log(2);
}
float log2f(float x)
{
return logf(x) / logf(2);
}