diff -r 000000000000 -r 6474c204b198 security/nss/lib/freebl/mpi/tests/mptest-3a.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/nss/lib/freebl/mpi/tests/mptest-3a.c	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,111 @@
+/*
+ * Simple test driver for MPI library
+ *
+ * Test 3a: Multiplication vs. squaring timing test
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <limits.h>
+
+#include <time.h>
+
+#include "mpi.h"
+#include "mpprime.h"
+
+int main(int argc, char *argv[])
+{
+  int        ix, num, prec = 8;
+  double     d1, d2;
+  clock_t    start, finish;
+  time_t     seed;
+  mp_int     a, c, d;
+
+  seed = time(NULL);
+
+  if(argc < 2) {
+    fprintf(stderr, "Usage: %s <num-tests> [<precision>]\n", argv[0]);
+    return 1;
+  }
+
+  if((num = atoi(argv[1])) < 0)
+    num = -num;
+
+  if(!num) {
+    fprintf(stderr, "%s: must perform at least 1 test\n", argv[0]);
+    return 1;
+  }
+
+  if(argc > 2) {
+    if((prec = atoi(argv[2])) <= 0)
+      prec = 8;
+    else
+      prec = (prec + (DIGIT_BIT - 1)) / DIGIT_BIT;
+  }
+  
+  printf("Test 3a: Multiplication vs squaring timing test\n"
+	 "Precision:  %d digits (%u bits)\n"
+	 "# of tests: %d\n\n", prec, prec * DIGIT_BIT, num);
+
+  mp_init_size(&a, prec);
+
+  mp_init(&c); mp_init(&d);
+
+  printf("Verifying accuracy ... \n");
+  srand((unsigned int)seed);
+  for(ix = 0; ix < num; ix++) {
+    mpp_random_size(&a, prec);
+    mp_mul(&a, &a, &c);
+    mp_sqr(&a, &d);
+
+    if(mp_cmp(&c, &d) != 0) {
+      printf("Error!  Results not accurate:\n");
+      printf("a = "); mp_print(&a, stdout); fputc('\n', stdout);
+      printf("c = "); mp_print(&c, stdout); fputc('\n', stdout);
+      printf("d = "); mp_print(&d, stdout); fputc('\n', stdout);
+      mp_sub(&c, &d, &d);
+      printf("dif "); mp_print(&d, stdout); fputc('\n', stdout);
+      mp_clear(&c); mp_clear(&d);
+      mp_clear(&a);
+      return 1;
+    }
+  }
+  printf("Accuracy is confirmed for the %d test samples\n", num);
+  mp_clear(&d);
+
+  printf("Testing squaring ... \n");
+  srand((unsigned int)seed);
+  start = clock();
+  for(ix = 0; ix < num; ix++) {
+    mpp_random_size(&a, prec);
+    mp_sqr(&a, &c);
+  }
+  finish = clock();
+
+  d2 = (double)(finish - start) / CLOCKS_PER_SEC;
+
+  printf("Testing multiplication ... \n");
+  srand((unsigned int)seed);
+  start = clock();
+  for(ix = 0; ix < num; ix++) {
+    mpp_random(&a);
+    mp_mul(&a, &a, &c);
+  }
+  finish = clock();
+
+  d1 = (double)(finish - start) / CLOCKS_PER_SEC;
+
+  printf("Multiplication time: %.3f sec (%.3f each)\n", d1, d1 / num);
+  printf("Squaring time:       %.3f sec (%.3f each)\n", d2, d2 / num);
+  printf("Improvement:         %.2f%%\n", (1.0 - (d2 / d1)) * 100.0);
+
+  mp_clear(&c);
+  mp_clear(&a);
+
+  return 0;
+}