niknah

// This software was written by Naoki Shibata in 2018.   https://gist.github.com/shibatch
// No copyright is claimed, and the software is hereby placed in the public domain.

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

int setFreq(double d) {