/*
 *  putwave.c
 *  WaveAsText
 *
 *  Created by Christopher Dobrian on Wed Jan 14 2004.
 *
 */

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

#define NUM_SECONDS	(1.)
#define SAMPLE_RATE	(44100.)
#define	BUF_SIZE	256
#define TWOPI		(6.283185307179586)
#define	MAXAMP		(1.)
#define FREQUENCY	(1000.)

int	main(void);

int main(void) {
    float amplitude = MAXAMP;
    float frequency = FREQUENCY;
    float phase = 0.;
    unsigned long n; // the current sample number
    unsigned long totalsamples = (unsigned long)(NUM_SECONDS*SAMPLE_RATE);
    float twopiFoverR = TWOPI*frequency/SAMPLE_RATE;
    unsigned long o = 0; //counter for array
    float y[BUF_SIZE]; // buffer of sample values
	
    for( n = 0 ; n < totalsamples ; n++ )
    {
        if (o >= BUF_SIZE) {
            fwrite( y, sizeof(y[0]), BUF_SIZE, stdout );
            o = 0;
        }
        y[o++] = amplitude*sin(twopiFoverR*n+phase);
    }
    fwrite( y, sizeof(y[0]), o, stdout );

    return 0;
}