Setting up autoconf/automake for GF-Complete

Also re-organized the directory structure.

Signed-off-by: Kevin Greenan <kmgreen2@gmail.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/examples/gf_example_3.c b/examples/gf_example_3.c
new file mode 100644
index 0000000..d6fef87
--- /dev/null
+++ b/examples/gf_example_3.c
@@ -0,0 +1,74 @@
+/*
+ * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic
+ * James S. Plank, Ethan L. Miller, Kevin M. Greenan,
+ * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride.
+ *
+ * gf_example_3.c
+ *
+ * Identical to example_2 except it works in GF(2^64)
+ */
+
+#include <stdio.h>
+#include <getopt.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "gf_complete.h"
+#include "gf_rand.h"
+
+void usage(char *s)
+{
+  fprintf(stderr, "usage: gf_example_3\n");
+  exit(1);
+}
+
+int main(int argc, char **argv)
+{
+  uint64_t a, b, c;
+  uint64_t *r1, *r2;
+  int i;
+  gf_t gf;
+
+  if (argc != 1) usage(NULL);
+
+  /* Get two random numbers in a and b */
+
+  MOA_Seed(time(0));
+  a = MOA_Random_64();
+  b = MOA_Random_64();
+
+  /* Create the proper instance of the gf_t object using defaults: */
+
+  gf_init_easy(&gf, 64);
+
+  /* And multiply a and b using the galois field: */
+
+  c = gf.multiply.w64(&gf, a, b);
+  printf("%llx * %llx = %llx\n", (long long unsigned int) a, (long long unsigned int) b, (long long unsigned int) c);
+
+  /* Divide the product by a and b */
+
+  printf("%llx / %llx = %llx\n", (long long unsigned int) c, (long long unsigned int) a, (long long unsigned int) gf.divide.w64(&gf, c, a));
+  printf("%llx / %llx = %llx\n", (long long unsigned int) c, (long long unsigned int) b, (long long unsigned int) gf.divide.w64(&gf, c, b));
+
+  r1 = (uint64_t *) malloc(32);
+  r2 = (uint64_t *) malloc(32);
+
+  r1[0] = b;
+
+  for (i = 1; i < 4; i++) r1[i] = MOA_Random_64();
+
+  gf.multiply_region.w64(&gf, r1, r2, a, 32, 0);
+
+  printf("\nmultiply_region by %llx\n\n", (long long unsigned int) a);
+  printf("R1 (the source):  ");
+  for (i = 0; i < 4; i++) printf(" %016llx", (long long unsigned int) r1[i]);
+
+  printf("\nR2 (the product): ");
+  for (i = 0; i < 4; i++) printf(" %016llx", (long long unsigned int) r2[i]);
+  printf("\n");
+
+  exit(0);
+}