/************************************************************
  File:          common.h                              
  Description:   A program that inputs a matrix from a file 
                 and computes the Cholesky decomposition 
		 using several processes.
		 This file contains communication functions.
                                                         
  Author:        Dana Vrajitoru                          
  Organization:  IUSB                                    
  Date:          August 16, 2002                           
**************************************************************/

#ifndef COMMON_H
#define COMMON_H

const int MASTER_ID=0;

// Receives an array of floats of the given size from the proc_id
// process.
void Receive_float_array(int proc_id, float *array, int size);

// Sends an array of floats of the given size to the proc_id process.
void Send_float_array(int proc_id, float *array, int size);

// Receives an array of integers of the given size from the proc_id
// process.
void Receive_int_array(int proc_id, int *array, int size);

// Sends an array of integers of the given size to the proc_id
// process.
void Send_int_array(int proc_id, int *array, int size);

// The source process broadcasts an array of integers of the given
// size.
void Cast_int_array(int source, int *array, int size);

// Computes the minimum of two integers
int min(int arg1, int arg2);

#endif