# include <stdlib.h>
# include <stdio.h>
# include <time.h>
# include "collatz_recursive.h"
int main ( );
void test01 ( );
void timestamp ( );
/******************************************************************************/
int main ( )
/******************************************************************************/
/*
 Purpose:
 collatz_recursive_test() tests collatz_recursive().
 Licensing:
 This code is distributed under the MIT license.
 Modified:
 09 March 2012
 Author:
 John Burkardt
*/
{
 timestamp ( );
 printf ( "\n" );
 printf ( "COLLATZ_RECURSIVE_TEST():\n" );
 printf ( " C version\n" );
 printf ( " Test COLLATZ_RECURSIVE().\n" );
 test01 ( );
/*
 Terminate.
*/
 printf ( "\n" );
 printf ( "COLLATZ_RECURSIVE_TEST():\n" );
 printf ( " Normal end of execution.\n" );
 printf ( "\n" );
 timestamp ( );
 return 0;
}
/******************************************************************************/
void test01 ( )
/******************************************************************************/
/*
 Purpose:
 TEST01 tests COLLATZ_PATH;
 Licensing:
 This code is distributed under the MIT license.
 Modified:
 09 March 2012
 Author:
 John Burkardt
*/
{
 int n;
 int n_test[5] = { 7, 8, 9, 10, 600 };
 int test;
 int test_num = 5;
 printf ( "\n" );
 printf ( "TEST01\n" );
 printf ( " COLLATZ_PATH prints the members of a Collatz path.\n" );
 for ( test = 0; test < test_num; test++ )
 {
 n = n_test[test];
 printf ( "\n" );
 printf ( " %d is the starting point.\n", n );
 collatz_path ( n );
 }
 return;
}
/******************************************************************************/
void timestamp ( )
/******************************************************************************/
/*
 Purpose:
 timestamp() prints the current YMDHMS date as a time stamp.
 Example:
 31 May 2001 09:45:54 AM
 Licensing:
 This code is distributed under the MIT license. 
 Modified:
 24 September 2003
 Author:
 John Burkardt
*/
{
# define TIME_SIZE 40
 static char time_buffer[TIME_SIZE];
 const struct tm *tm;
 time_t now;
 now = time ( NULL );
 tm = localtime ( &now );
 strftime ( time_buffer, TIME_SIZE, "%d %B %Y %I:%M:%S %p", tm );
 printf ( "%s\n", time_buffer );
 return;
# undef TIME_SIZE
}
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