#ifndef INOUT_H
#define INOUT_H

/*
 * METRIC --- Mode expansion modeling in integrated optics / photonics
 * http://metric.computational-photonics.eu/ 
 */

/* 
 * inout.h
 * Basic file input / output functions 
 */

#include <stdio.h>

/* write and read char, int, double - values from files,
   values must appear on separate lines, 
   maybe divided by comment lines, starting with '%' */

/* write comment */
void comment(const char *c, FILE *dat);

/* write character */
void fputchar(char c, FILE *dat);

/* write int */
void fputint(int i, FILE *dat);

/* write double */
void fputdouble(double d, FILE *dat);

/* character input from file dat */
char fgetchar(FILE *dat);

/* integer input from file dat */
int fgetint(FILE *dat);

/* double input from file dat */
double fgetdouble(FILE *dat);

/* ----------------------------------------------------------- */

/* digits of integer numbers 0<=i<=999 */
char dig1000(int i);
char dig100(int i);
char dig10(int i);
char dig1(int i);

/* ----------------------------------------------------------- */

/* append double value to file name.xf; create if necessary */
void apptoxf(const char *name, double x);

/* append (x, y)-pair to file name.xyf; create if necessary */
void apptoxyf(const char *name, double x, double y);

/* append (x, y1, y2)-triple to file name.xyf; create if necessary */
void apptoxyf(const char *name, double x, double y1, double y2);

#endif  // INOUT_H