/* numericUtilities.c */

#include "numericUtilities.h"
#include <string.h>

int maxInt(int x, int y) {
  return(x < y ? y : x);
}

int minInt(int x, int y) {
  return(-maxInt(-x, -y));
}

int digitize(int n, double a, double b, double x) {
  return(maxInt(0, minInt(n - 1, n*(x - a)/(b - a))));
}

char digitalDisplay(char displayChars[ ],
                    double a, double b, double x) {
  return(displayChars[digitize(strlen(displayChars), a, b, x)]);
}