annotate src/fftw-3.3.8/libbench2/pow2.c @ 168:ceec0dd9ec9c

Replace these with versions built using an older toolset (so as to avoid ABI compatibilities when linking on Ubuntu 14.04 for packaging purposes)

#include "libbench2/bench.h"

int power_of_two(int n)
{
     return (((n) > 0) && (((n) & ((n) - 1)) == 0));
}