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bitboards.cc
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bitboards.cc
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#include "common.h"
void print(uint64_t x[64], bool show_original = true)
{
for (int i = 0; i < 8; i++) {
if (show_original) {
for (int j = 0; j < 8; j++) {
printf(" %2d", 63 - 7 + j - 8*i);
}
printf(" ");
}
for (int j = 0; j < 8; j++) {
for (int k = 0;; k++) {
assert(k < 64);
if (x[k] != (uint64_t(1) <<(63 - 7 + j - 8*i)))
continue;
printf(" %2d", k);
break;
}
}
printf("\n");
}
}
int main()
{
uint64_t x[64], y[64];
for (int i = 0; i < 64; i++)
x[i] = uint64_t(1) << i;
printf("Original:\n");
print(x);
// ----------------------------------------
for (int i = 0; i < 64; i++) {
y[i] = rv64b::gzip(x[i], 62);
y[i] = rv64b::gzip(y[i], 62);
y[i] = rv64b::gzip(y[i], 62);
}
printf("\nTranspose:\n");
print(y);
// ----------------------------------------
for (int i = 0; i < 64; i++) {
y[i] = rv64b::gzip(x[i], 14);
y[i] = rv64b::gzip(y[i], 28);
y[i] = rv64b::gzip(y[i], 56);
}
printf("\nTranspose (alt):\n");
print(y);
// ----------------------------------------
for (int i = 0; i < 64; i++)
y[i] = rv64b::grev(x[i], 63);
printf("\nRotate 180:\n");
print(y);
// ----------------------------------------
for (int i = 0; i < 64; i++)
y[i] = rv64b::grev(x[i], 7);
printf("\nFlip horizontal:\n");
print(y);
// ----------------------------------------
for (int i = 0; i < 64; i++)
y[i] = rv64b::grev(x[i], 56);
printf("\nFlip vertical:\n");
print(y);
// ----------------------------------------
for (int i = 0; i < 64; i++) {
y[i] = rv64b::grev(x[i], 56);
y[i] = rv64b::gzip(y[i], 62);
y[i] = rv64b::gzip(y[i], 62);
y[i] = rv64b::gzip(y[i], 62);
}
printf("\nRotate left:\n");
print(y);
// ----------------------------------------
for (int i = 0; i < 64; i++) {
y[i] = rv64b::grev(x[i], 7);
y[i] = rv64b::gzip(y[i], 62);
y[i] = rv64b::gzip(y[i], 62);
y[i] = rv64b::gzip(y[i], 62);
}
printf("\nRotate right:\n");
print(y);
// ----------------------------------------
printf("\n===============================\n");
printf("Original:\n");
print(x, false);
for (int i = 0; i < 64; i++)
y[i] = rv64b::gzip(x[i], 62);
printf("\nzip\n");
print(y, false);
for (int i = 0; i < 64; i++)
y[i] = rv64b::gzip(y[i], 62);
printf("\nzip\n");
print(y, false);
for (int i = 0; i < 64; i++)
y[i] = rv64b::gzip(y[i], 62);
printf("\nzip\n");
print(y, false);
// ----------------------------------------
printf("\n===============================\n");
printf("Original:\n");
print(x, false);
for (int i = 0; i < 64; i++)
y[i] = rv64b::gzip(x[i], 14);
printf("\nzip.h\n");
print(y, false);
for (int i = 0; i < 64; i++)
y[i] = rv64b::gzip(y[i], 28);
printf("\nzip2.w\n");
print(y, false);
for (int i = 0; i < 64; i++)
y[i] = rv64b::gzip(y[i], 56);
printf("\nzip4\n");
print(y, false);
// ----------------------------------------
return 0;
}