RIOT/tests/test_float/main.c

/*
 * Copyright (C) 2013 INRIA
 *
 * This file is subject to the terms and conditions of the GNU Lesser General
 * Public License. See the file LICENSE in the top level directory for more
 * details.
 */

/**
 * @ingroup tests
 * @{
 *
 * @file
 * @brief Float test application
 *
 * @author      Oliver Hahm <oliver.hahm@inria.fr>
 *
 * @}
 */

#include <stdio.h>
#include <board.h>
#include <math.h>

int main(void)
{
    double  x = 1234567. / 1024., z;

    while (1) {
        x += 0.1;
        z = x - floor(x);

        if (z >= 1) {
            putchar('+');
        }
        else {
            putchar('-');
        }
    }
}