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/*
 * compare.c
 *
 * Copyright(C) 2020 - MT
 *
 * Compares several pairs of values and checks the results.
 *
 * This  program is free software: you can redistribute it and/or modify it
 * under  the terms of the GNU General Public License as published  by  the
 * Free  Software Foundation, either version 3 of the License, or (at  your
 * option) any later version.
 *
 * This  program  is distributed in the hope that it will  be  useful,  but
 * WITHOUT   ANY   WARRANTY;   without even   the   implied   warranty   of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * You  should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * 06 Jan 21   0.1   - Initial version - MT
 *
 * To Do:            - Figure out why this doesn't work!
 */

#include "mescc.h"
#include "printf.h"

#define  DEBUG    0

int min(m, n) int m, n; 
{
   if (m < n)
   {
      if(DEBUG)
         printf("min %12d, %d = %d (a)\n", n, m, m);
      return m;
   }
   else
   {
      if(DEBUG)
            printf ("min %12d, %d = %d (b)\n", m, n, n);
      return n;
   }
}

int max(m, n) int m, n; 
{
   if (m > n)
   {
      if(DEBUG)
         printf ("max %12d, %d = %d (c)\n", n, m, m);
      return m;
   }
   else
   {
      if(DEBUG)
         printf ("max %12d, %d = %d (d)\n", m, n, n);
      return n;
   }
}

int main()
{
   int a[15];
   int b[15];
   int i;
   
   /* The  comments next to each pair of values indicate which  comparisons
    * work and which do not. */
    
                                    /* min()/max() */
   a[1] = 0;      b[1] = 32767;     /*  Pass/Pass  */
   a[2] = 0;      b[2] = 16383;     /*  Pass/Pass  */
   a[3] = -16384; b[3] = 0;         /*  Pass/Pass  */
   a[4] = -32678; b[4] = 0;         /*  Pass/Pass  Δ 32768 */
   
   a[5] =  16384; b[5] = 32767;     /*  Pass/Pass  */
   a[6] = -32768; b[6] = -16384;    /*  Pass/Pass  */
   a[7] = -1;     b[7] = 32767;     /*  Pass/Fail  Δ 32768 */
   a[8] = -32767; b[8] = 1;         /*  Pass/Fail  Δ 32768 */
   a[9] = -2;     b[9] = 32767;     /*  Fail/Fail  Δ > 32768 */
   a[10] = -32767;b[10] = 2;        /*  Fail/Fail  Δ > 32768 */
   a[11] = -32768;b[11] = 32767;    /*  Fail/Fail  Δ > 32768 */
   a[12] = -16384;b[12] = 16384;    /*  Pass/Fail  Δ 32768 */
   a[13] = -8192; b[13] = 24576;    /*  Pass/Fail  Δ 32768 */
   a[14] =-16384; b[14] = 16384;    /*  Pass/Fail  Δ 32768 */

   for ( i = 1; i <= 14; i++)
   {
      if (a[i] == min(a[i], b[i]))
         printf ("%3d min(%6d, %-5d) = %-6d \tPassed\n",
            i, a[i], b[i], a[i]);
      else
         printf ("%3d min(%6d, %-5d) = %-6d \tFailed\n", 
            i, a[i], b[i], b[i]);
   }
   
   printf("\n");

   for ( i = 1; i <= 14; i++)
   {
      if (b[i] == max(a[i], b[i]))
         printf ("%3d max(%6d, %-5d) = %-6d \tPassed\n", 
            i, a[i], b[i], b[i]);
      else
         printf ("%3d max(%6d, %-5d) = %-6d \tFailed\n", 
            i, a[i], b[i], a[i]);
   }
}

  1 min(     0, 32767) = 0              Passed
  2 min(     0, 16383) = 0              Passed
  3 min(-16384, 0    ) = -16384         Passed
  4 min(-32678, 0    ) = -32678         Passed
  5 min( 16384, 32767) = 16384          Passed
  6 min(--.)*(, -16384) = --.)*(        Passed
  7 min(    -1, 32767) = -1             Passed
  8 min(-32767, 1    ) = -32767         Passed
  9 min(    -2, 32767) = 32767          Failed
 10 min(-32767, 2    ) = 2              Failed
 11 min(--.)*(, 32767) = 32767          Failed
 12 min(-16384, 16384) = -16384         Passed
 13 min( -8192, 24576) = -8192          Passed
 14 min(-16384, 16384) = -16384         Passed

  1 max(     0, 32767) = 32767          Passed
  2 max(     0, 16383) = 16383          Passed
  3 max(-16384, 0    ) = 0              Passed
  4 max(-32678, 0    ) = 0              Passed
  5 max( 16384, 32767) = 32767          Passed
  6 max(--.)*(, -16384) = -16384        Passed
  7 max(    -1, 32767) = -1             Failed
  8 max(-32767, 1    ) = -32767         Failed
  9 max(    -2, 32767) = -2             Failed
 10 max(-32767, 2    ) = -32767         Failed
 11 max(--.)*(, 32767) = --.)*(         Failed
 12 max(-16384, 16384) = -16384         Failed
 13 max( -8192, 24576) = -8192          Failed
 14 max(-16384, 16384) = -16384         Failed

#define INT_MIN   -32768
#include "mescc.h"
#include "printf.h"

main()
{
   int i;
   i = INT_MIN;
   printf("INT_MIN= %d\n", -32768);
   printf("INT_MIN= %d\n", INT_MIN);
   printf("INT_MIN= %d\n", i);
   printf("INT_MIN= %d\n", i + 1);
   printf("INT_MIN= %d\n", ++i);
}

INT_MIN= --.)*(
INT_MIN= --.)*(
INT_MIN= --.)*(
INT_MIN= -32767
INT_MIN= -32767