void galois_w32_region_xor(void *src, void *dest, int nbytes)
{
if (gfp_array[32] == NULL) {
galois_init_default_field(32);
}
gfp_array[32]->multiply_region.w32(gfp_array[32], src, dest, 1, nbytes, 1);
}
void galois_w32_region_multiply(char *region, /* Region to multiply */
int multby, /* Number to multiply by */
int nbytes, /* Number of bytes in region */
char *r2, /* If r2 != NULL, products go here */
int add)
{
if (gfp_array[32] == NULL) {
galois_init_default_field(32);
}
gfp_array[32]->multiply_region.w32(gfp_array[32], region, r2, multby, nbytes, add);
}
int galois_single_multiply(int x, int y, int w)
{
if (x == 0 || y == 0) return 0;
if (gfp_array[w] == NULL) {
galois_init_default_field(w);
}
if (w <= 32) {
return gfp_array[w]->multiply.w32(gfp_array[w], x, y);
} else {
fprintf(stderr, "ERROR -- Galois field not implemented for w=%d\n", w);
return 0;
}
}
int galois_single_divide(int x, int y, int w)
{
if (x == 0) return 0;
if (y == 0) return -1;
if (gfp_array[w] == NULL) {
galois_init_default_field(w);
}
if (w <= 32) {
return gfp_array[w]->divide.w32(gfp_array[w], x, y);
} else {
fprintf(stderr, "ERROR -- Galois field not implemented for w=%d\n", w);
raise(SIGSEGV);
return 0;
}
}
static void galois_init(int w)
{
if (w <= 0 || w > 32) {
fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
abort();
}
switch (galois_init_default_field(w)) {
case ENOMEM:
fprintf(stderr, "ERROR -- cannot allocate memory for Galois field w=%d\n", w);
abort();
break;
case EINVAL:
fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
abort();
break;
}
}
