michael@0: /*
michael@0:  * Simple test driver for MPI library
michael@0:  *
michael@0:  * Test 3: Multiplication, division, and exponentiation test
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include <stdio.h>
michael@0: #include <stdlib.h>
michael@0: #include <string.h>
michael@0: #include <ctype.h>
michael@0: #include <limits.h>
michael@0: 
michael@0: #include <time.h>
michael@0: 
michael@0: #include "mpi.h"
michael@0: 
michael@0: #define  SQRT 1  /* define nonzero to get square-root test  */
michael@0: #define  EXPT 0  /* define nonzero to get exponentiate test */
michael@0: 
michael@0: int main(int argc, char *argv[])
michael@0: {
michael@0:   int      ix;
michael@0:   mp_int   a, b, c, d;
michael@0:   mp_digit r;
michael@0:   mp_err   res;
michael@0: 
michael@0:   if(argc < 3) {
michael@0:     fprintf(stderr, "Usage: %s <a> <b>\n", argv[0]);
michael@0:     return 1;
michael@0:   }
michael@0: 
michael@0:   printf("Test 3: Multiplication and division\n\n");
michael@0:   srand(time(NULL));
michael@0: 
michael@0:   mp_init(&a);
michael@0:   mp_init(&b);
michael@0: 
michael@0:   mp_read_variable_radix(&a, argv[1], 10);
michael@0:   mp_read_variable_radix(&b, argv[2], 10);
michael@0:   printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
michael@0:   printf("b = "); mp_print(&b, stdout); fputc('\n', stdout);
michael@0:   
michael@0:   mp_init(&c);
michael@0:   printf("\nc = a * b\n");
michael@0: 
michael@0:   mp_mul(&a, &b, &c);
michael@0:   printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
michael@0: 
michael@0:   printf("\nc = b * 32523\n");
michael@0: 
michael@0:   mp_mul_d(&b, 32523, &c);
michael@0:   printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
michael@0:   
michael@0:   mp_init(&d);
michael@0:   printf("\nc = a / b, d = a mod b\n");
michael@0:   
michael@0:   mp_div(&a, &b, &c, &d);
michael@0:   printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);  
michael@0:   printf("d = "); mp_print(&d, stdout); fputc('\n', stdout);  
michael@0: 
michael@0:   ix = rand() % 256;
michael@0:   printf("\nc = a / %d, r = a mod %d\n", ix, ix);
michael@0:   mp_div_d(&a, (mp_digit)ix, &c, &r);
michael@0:   printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);  
michael@0:   printf("r = %04X\n", r);
michael@0: 
michael@0: #if EXPT
michael@0:   printf("\nc = a ** b\n");
michael@0:   mp_expt(&a, &b, &c);
michael@0:   printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);  
michael@0: #endif
michael@0: 
michael@0:   ix = rand() % 256;
michael@0:   printf("\nc = 2^%d\n", ix);
michael@0:   mp_2expt(&c, ix);
michael@0:   printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
michael@0: 
michael@0: #if SQRT
michael@0:   printf("\nc = sqrt(a)\n");
michael@0:   if((res = mp_sqrt(&a, &c)) != MP_OKAY) {
michael@0:     printf("mp_sqrt: %s\n", mp_strerror(res));
michael@0:   } else {
michael@0:     printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
michael@0:     mp_sqr(&c, &c);
michael@0:     printf("c^2 = "); mp_print(&c, stdout); fputc('\n', stdout);
michael@0:   }
michael@0: #endif
michael@0: 
michael@0:   mp_clear(&d);
michael@0:   mp_clear(&c);
michael@0:   mp_clear(&b);
michael@0:   mp_clear(&a);
michael@0: 
michael@0:   return 0;
michael@0: }