/*
Programmer:   Greg Perkins
Program:      macro_min.c
Class:        CS 73  C/UNIX
Due:          March 12, 1998

This program uses user-defined macros to determine the minimum value
between two values.  It also uses the two value definition as the base
of a three value definition and subsequently uses the three value
definition as the base of a four value definition.  In the event of
two equal values, the program actually gives the value of the second
number, this is arbitrary since the two values are equal anyway.
Changing the value of 'X' in the statement '#define TYPE X' will change
the type of variable being tested in this example program.
*/

#include <stdio.h>

#define MIN(a, b) ((a) > (b) ? (b) : (a))
#define MIN_3(a, b, c) ((a) > (b) ? (MIN(b, c)) : (MIN(a, c)))
#define MIN_4(a, b, c, d) ((a) > (b) ? (MIN_3(b, c, d)) : (MIN_3(a, c, d)))

/*
TYPE controls the comparison variable type
  TYPE == 1, Integer Definitions used
  TYPE == 2, Float Definitions used
  TYPE == ?, Char Definitions used {default}
*/
#define TYPE 2


#if TYPE == 1
/*Integer Definitions*/
#define LITERAL %d
#define STRING1 "Variables used are integers:\n"
#define STRING2 "%d : %d : %d : %d \n\n"
#define STRING3 "Call %d : %d\n"
#elif TYPE == 2
/*Float Definitions*/
#define LITERAL %f
#define STRING1 "Variables used are floats:\n"
#define STRING2 "%f : %f : %f : %f \n\n"
#define STRING3 "Call %d : %f\n"
#else
/*Char Definitions*/
#define LITERAL %c
#define STRING1 "Variables used are chars:\n"
#define STRING2 "%c : %c : %c : %c \n\n"
#define STRING3 "Call %d : %c\n"
#endif

int main()
{
	int call = 0;
#if TYPE == 1
	int one = 1, two = 2, three = 3, four = 4;
#elif TYPE == 2
	float one = 2.1, two = 2.2, three = 2.3, four = 2.4;
#else
	char one = 'a', two = 'b', three = 'c', four = 'd';
#endif

	printf(STRING1);
	printf(STRING2, one, two, three, four);

	printf(STRING3, ++call, MIN(one, two));
	printf(STRING3, ++call, MIN(two, one));
	printf(STRING3, ++call, MIN(one, one));

	printf(STRING3, ++call, MIN_3(one, two, three));
	printf(STRING3, ++call, MIN_3(one, three, two));
	printf(STRING3, ++call, MIN_3(two, one, three));
	printf(STRING3, ++call, MIN_3(two, three, one));
	printf(STRING3, ++call, MIN_3(three, one, two));
	printf(STRING3, ++call, MIN_3(three, two, one));
	printf(STRING3, ++call, MIN_3(one, one, two));
	printf(STRING3, ++call, MIN_3(one, two, one));
	printf(STRING3, ++call, MIN_3(two, one, one));
	printf(STRING3, ++call, MIN_3(one, one, one));

	printf(STRING3, ++call, MIN_4(one, two, three, four));
	printf(STRING3, ++call, MIN_4(one, two, four, three));
	printf(STRING3, ++call, MIN_4(one, three, two, four));
	printf(STRING3, ++call, MIN_4(one, three, four, two));
	printf(STRING3, ++call, MIN_4(one, four, two, three));
	printf(STRING3, ++call, MIN_4(one, four, three, two));
	printf(STRING3, ++call, MIN_4(two, one, three, four));
	printf(STRING3, ++call, MIN_4(two, one, four, three));
	printf(STRING3, ++call, MIN_4(two, three, one, four));
	printf(STRING3, ++call, MIN_4(two, three, four, one));
	printf(STRING3, ++call, MIN_4(two, four, one, three));
	printf(STRING3, ++call, MIN_4(two, four, three, one));
	printf(STRING3, ++call, MIN_4(three, one, two, four));
	printf(STRING3, ++call, MIN_4(three, one, four, two));
	printf(STRING3, ++call, MIN_4(three, two, one, four));
	printf(STRING3, ++call, MIN_4(three, two, four, one));
	printf(STRING3, ++call, MIN_4(three, four, one, two));
	printf(STRING3, ++call, MIN_4(three, four, two, one));
	printf(STRING3, ++call, MIN_4(four, one, two, three));
	printf(STRING3, ++call, MIN_4(four, one, three, two));
	printf(STRING3, ++call, MIN_4(four, two, one, three));
	printf(STRING3, ++call, MIN_4(four, two, three, one));
	printf(STRING3, ++call, MIN_4(four, three, one, two));
	printf(STRING3, ++call, MIN_4(four, three, two, one));
	printf(STRING3, ++call, MIN_4(one, one, two, three));
	printf(STRING3, ++call, MIN_4(one, two, one, three));
	printf(STRING3, ++call, MIN_4(one, two, three, one));
	printf(STRING3, ++call, MIN_4(two, one, one, three));
	printf(STRING3, ++call, MIN_4(two, one, three, one));
	printf(STRING3, ++call, MIN_4(two, three, one, one));
	printf(STRING3, ++call, MIN_4(one, one, one, two));
	printf(STRING3, ++call, MIN_4(one, one, two, one));
	printf(STRING3, ++call, MIN_4(one, two, one, one));
	printf(STRING3, ++call, MIN_4(two, one, one, one));
	printf(STRING3, ++call, MIN_4(one, one, one, one));

	return (0);
}