#ifndef IO_H
#define IO_H

#include <vector>

namespace IPK {
  // reads numbers from stdin, one number per line until it detects an empty line
  // returns all read numbers in a vector
  std::vector<double> read_vector();

  // generates N uniformly distributed numbers between min and max.
  // seed is an arbitrary number that initializes the random number generator.
  // Using the same number always creates the same output. If you want to have
  // different results each time, use random_seed() to generate seed.
  std::vector<double> uniform_distribution(int seed, int N, double min,
      double max);

  // generates N normally distributed numbers with given average and standard
  // deviation. seed is an arbitrary number that initializes the random number
  // generator. Using the same number always creates the same output. If you want
  // to have different results each time, use random_seed() to generate seed.
  std::vector<double> normal_distribution(int seed, int N, double avg,
      double std_dev);

  // returns a random seed (different on each call)
  int random_seed();
}
#endif  // IO_HH