84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/*
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* GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic
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* James S. Plank, Ethan L. Miller, Kevin M. Greenan,
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* Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride.
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*
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* gf_example_6.c
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*
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* Demonstrating altmap and extract_word
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*/
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#include <stdio.h>
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#include <getopt.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <time.h>
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#include "gf_complete.h"
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#include "gf_rand.h"
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void usage(char *s)
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{
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fprintf(stderr, "usage: gf_example_6\n");
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exit(1);
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}
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int main(int argc, char **argv)
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{
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uint32_t *a, *b;
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int i, j;
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gf_t gf, gf_16;
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if (gf_init_hard(&gf_16, 16, GF_MULT_LOG_TABLE, GF_REGION_DEFAULT, GF_DIVIDE_DEFAULT,
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0, 0, 0, NULL, NULL) == 0) {
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fprintf(stderr, "gf_init_hard (6) failed\n");
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exit(1);
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}
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if (gf_init_hard(&gf, 32, GF_MULT_COMPOSITE, GF_REGION_ALTMAP, GF_DIVIDE_DEFAULT,
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0, 2, 0, &gf_16, NULL) == 0) {
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fprintf(stderr, "gf_init_hard (32) failed\n");
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exit(1);
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}
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a = (uint32_t *) malloc(200);
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b = (uint32_t *) malloc(200);
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a += 3;
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b += 3;
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MOA_Seed(0);
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for (i = 0; i < 30; i++) a[i] = MOA_Random_W(32, 1);
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gf.multiply_region.w32(&gf, a, b, 0x12345678, 30*4, 0);
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printf("a: 0x%lx b: 0x%lx\n", (unsigned long) a, (unsigned long) b);
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for (i = 0; i < 30; i += 10) {
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printf("\n");
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printf(" ");
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for (j = 0; j < 10; j++) printf(" %8d", i+j);
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printf("\n");
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printf("a:");
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for (j = 0; j < 10; j++) printf(" %08x", a[i+j]);
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printf("\n");
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printf("b:");
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for (j = 0; j < 10; j++) printf(" %08x", b[i+j]);
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printf("\n");
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printf("\n");
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}
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for (i = 0; i < 15; i ++) {
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printf("Word %2d: 0x%08x * 0x12345678 = 0x%08x ", i,
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gf.extract_word.w32(&gf, a, 30*4, i),
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gf.extract_word.w32(&gf, b, 30*4, i));
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printf("Word %2d: 0x%08x * 0x12345678 = 0x%08x\n", i+15,
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gf.extract_word.w32(&gf, a, 30*4, i+15),
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gf.extract_word.w32(&gf, b, 30*4, i+15));
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}
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}
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