--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtommath/mtest/mtest.c	Sat Mar 25 12:59:58 2006 +0000
@@ -0,0 +1,304 @@
+/* makes a bignum test harness with NUM tests per operation
+ *
+ * the output is made in the following format [one parameter per line]
+
+operation
+operand1
+operand2
+[... operandN]
+result1
+result2
+[... resultN]
+
+So for example "a * b mod n" would be
+
+mulmod
+a
+b
+n
+a*b mod n
+
+e.g. if a=3, b=4 n=11 then
+
+mulmod
+3
+4
+11
+1
+
+ */
+
+#ifdef MP_8BIT
+#define THE_MASK 127
+#else
+#define THE_MASK 32767
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include "mpi.c"
+
+FILE *rng;
+
+void rand_num(mp_int *a)
+{
+   int n, size;
+   unsigned char buf[2048];
+
+   size = 1 + ((fgetc(rng)<<8) + fgetc(rng)) % 101;
+   buf[0] = (fgetc(rng)&1)?1:0;
+   fread(buf+1, 1, size, rng);
+   while (buf[1] == 0) buf[1] = fgetc(rng);
+   mp_read_raw(a, buf, 1+size);
+}
+
+void rand_num2(mp_int *a)
+{
+   int n, size;
+   unsigned char buf[2048];
+
+   size = 10 + ((fgetc(rng)<<8) + fgetc(rng)) % 101;
+   buf[0] = (fgetc(rng)&1)?1:0;
+   fread(buf+1, 1, size, rng);
+   while (buf[1] == 0) buf[1] = fgetc(rng);
+   mp_read_raw(a, buf, 1+size);
+}
+
+#define mp_to64(a, b) mp_toradix(a, b, 64)
+
+int main(void)
+{
+   int n, tmp;
+   mp_int a, b, c, d, e;
+   clock_t t1;
+   char buf[4096];
+
+   mp_init(&a);
+   mp_init(&b);
+   mp_init(&c);
+   mp_init(&d);
+   mp_init(&e);
+
+
+   /* initial (2^n - 1)^2 testing, makes sure the comba multiplier works [it has the new carry code] */
+/*
+   mp_set(&a, 1);
+   for (n = 1; n < 8192; n++) {
+       mp_mul(&a, &a, &c);
+       printf("mul\n");
+       mp_to64(&a, buf);
+       printf("%s\n%s\n", buf, buf);
+       mp_to64(&c, buf);
+       printf("%s\n", buf);
+
+       mp_add_d(&a, 1, &a);
+       mp_mul_2(&a, &a);
+       mp_sub_d(&a, 1, &a);
+   }
+*/
+
+   rng = fopen("/dev/urandom", "rb");
+   if (rng == NULL) {
+      rng = fopen("/dev/random", "rb");
+      if (rng == NULL) {
+         fprintf(stderr, "\nWarning:  stdin used as random source\n\n");
+         rng = stdin;
+      }
+   }
+
+   t1 = clock();
+   for (;;) {
+#if 0
+      if (clock() - t1 > CLOCKS_PER_SEC) {
+         sleep(2);
+         t1 = clock();
+      }
+#endif
+       n = fgetc(rng) % 15;
+
+   if (n == 0) {
+       /* add tests */
+       rand_num(&a);
+       rand_num(&b);
+       mp_add(&a, &b, &c);
+       printf("add\n");
+       mp_to64(&a, buf);
+       printf("%s\n", buf);
+       mp_to64(&b, buf);
+       printf("%s\n", buf);
+       mp_to64(&c, buf);
+       printf("%s\n", buf);
+   } else if (n == 1) {
+      /* sub tests */
+       rand_num(&a);
+       rand_num(&b);
+       mp_sub(&a, &b, &c);
+       printf("sub\n");
+       mp_to64(&a, buf);
+       printf("%s\n", buf);
+       mp_to64(&b, buf);
+       printf("%s\n", buf);
+       mp_to64(&c, buf);
+       printf("%s\n", buf);
+   } else if (n == 2) {
+       /* mul tests */
+       rand_num(&a);
+       rand_num(&b);
+       mp_mul(&a, &b, &c);
+       printf("mul\n");
+       mp_to64(&a, buf);
+       printf("%s\n", buf);
+       mp_to64(&b, buf);
+       printf("%s\n", buf);
+       mp_to64(&c, buf);
+       printf("%s\n", buf);
+   } else if (n == 3) {
+      /* div tests */
+       rand_num(&a);
+       rand_num(&b);
+       mp_div(&a, &b, &c, &d);
+       printf("div\n");
+       mp_to64(&a, buf);
+       printf("%s\n", buf);
+       mp_to64(&b, buf);
+       printf("%s\n", buf);
+       mp_to64(&c, buf);
+       printf("%s\n", buf);
+       mp_to64(&d, buf);
+       printf("%s\n", buf);
+   } else if (n == 4) {
+      /* sqr tests */
+       rand_num(&a);
+       mp_sqr(&a, &b);
+       printf("sqr\n");
+       mp_to64(&a, buf);
+       printf("%s\n", buf);
+       mp_to64(&b, buf);
+       printf("%s\n", buf);
+   } else if (n == 5) {
+      /* mul_2d test */
+      rand_num(&a);
+      mp_copy(&a, &b);
+      n = fgetc(rng) & 63;
+      mp_mul_2d(&b, n, &b);
+      mp_to64(&a, buf);
+      printf("mul2d\n");
+      printf("%s\n", buf);
+      printf("%d\n", n);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+   } else if (n == 6) {
+      /* div_2d test */
+      rand_num(&a);
+      mp_copy(&a, &b);
+      n = fgetc(rng) & 63;
+      mp_div_2d(&b, n, &b, NULL);
+      mp_to64(&a, buf);
+      printf("div2d\n");
+      printf("%s\n", buf);
+      printf("%d\n", n);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+   } else if (n == 7) {
+      /* gcd test */
+      rand_num(&a);
+      rand_num(&b);
+      a.sign = MP_ZPOS;
+      b.sign = MP_ZPOS;
+      mp_gcd(&a, &b, &c);
+      printf("gcd\n");
+      mp_to64(&a, buf);
+      printf("%s\n", buf);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+      mp_to64(&c, buf);
+      printf("%s\n", buf);
+   } else if (n == 8) {
+      /* lcm test */
+      rand_num(&a);
+      rand_num(&b);
+      a.sign = MP_ZPOS;
+      b.sign = MP_ZPOS;
+      mp_lcm(&a, &b, &c);
+      printf("lcm\n");
+      mp_to64(&a, buf);
+      printf("%s\n", buf);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+      mp_to64(&c, buf);
+      printf("%s\n", buf);
+   } else if (n == 9) {
+      /* exptmod test */
+      rand_num2(&a);
+      rand_num2(&b);
+      rand_num2(&c);
+//      if (c.dp[0]&1) mp_add_d(&c, 1, &c);
+      a.sign = b.sign = c.sign = 0;
+      mp_exptmod(&a, &b, &c, &d);
+      printf("expt\n");
+      mp_to64(&a, buf);
+      printf("%s\n", buf);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+      mp_to64(&c, buf);
+      printf("%s\n", buf);
+      mp_to64(&d, buf);
+      printf("%s\n", buf);
+   } else if (n == 10) {
+      /* invmod test */
+      rand_num2(&a);
+      rand_num2(&b);
+      b.sign = MP_ZPOS;
+      a.sign = MP_ZPOS;
+      mp_gcd(&a, &b, &c);
+      if (mp_cmp_d(&c, 1) != 0) continue;
+      if (mp_cmp_d(&b, 1) == 0) continue;
+      mp_invmod(&a, &b, &c);
+      printf("invmod\n");
+      mp_to64(&a, buf);
+      printf("%s\n", buf);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+      mp_to64(&c, buf);
+      printf("%s\n", buf);
+   } else if (n == 11) {
+      rand_num(&a);
+      mp_mul_2(&a, &a);
+      mp_div_2(&a, &b);
+      printf("div2\n");
+      mp_to64(&a, buf);
+      printf("%s\n", buf);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+   } else if (n == 12) {
+      rand_num2(&a);
+      mp_mul_2(&a, &b);
+      printf("mul2\n");
+      mp_to64(&a, buf);
+      printf("%s\n", buf);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+   } else if (n == 13) {
+      rand_num2(&a);
+      tmp = abs(rand()) & THE_MASK;
+      mp_add_d(&a, tmp, &b);
+      printf("add_d\n");
+      mp_to64(&a, buf);
+      printf("%s\n%d\n", buf, tmp);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+   } else if (n == 14) {
+      rand_num2(&a);
+      tmp = abs(rand()) & THE_MASK;
+      mp_sub_d(&a, tmp, &b);
+      printf("sub_d\n");
+      mp_to64(&a, buf);
+      printf("%s\n%d\n", buf, tmp);
+      mp_to64(&b, buf);
+      printf("%s\n", buf);
+   }
+   }
+   fclose(rng);
+   return 0;
+}