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Dropped all alpha lookup table for 'a'+mod 26 arithmetic

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I'm not really sure why I thought this required a lookup table...
This commit is contained in:
Christopher Haster
2024-01-28 02:41:19 -06:00
parent 15cd1d29e0
commit 66a557d19d
3 changed files with 149 additions and 192 deletions
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tests/test_rbyd.toml
+17 -19
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@@ -3581,7 +3581,6 @@ code = '''
.weight = 0,
};
lfsr_rbyd_t rbyd;
const char *alpha = "abcdefghijklmnopqrstuvwxyz";
uint8_t buffer[4];
printf("perm: [");
@@ -3591,7 +3590,7 @@ code = '''
uint8_t attr = TEST_PRNG(&prng) % N;
// choose append or remove
if (TEST_PRNG(&prng) & 1) {
printf("a0x%02x=%c", attr, alpha[i % 26]);
printf("a0x%02x=%c", attr, 'a'+(i % 26));
} else {
printf("r0x%02x", attr);
}
@@ -3616,11 +3615,11 @@ code = '''
// choose append or remove
if (TEST_PRNG(&prng) & 1) {
// update our sim
sim[attr] = alpha[i % 26];
sim[attr] = 'a'+(i % 26);
// update our rbyd
lfsr_rbyd_commit(&lfs, &rbyd, -1, LFSR_ATTRS(
LFSR_ATTR(UATTR(attr), 0,
BUF(&alpha[i % 26], 1)))) => 0;
BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
} else {
// update our sim
sim[attr] = '\0';
@@ -7611,7 +7610,6 @@ code = '''
.weight = 0,
};
lfsr_rbyd_t rbyd;
const char *alpha = "abcdefghijklmnopqrstuvwxyz";
uint8_t buffer[4];
printf("perm: [");
@@ -7622,7 +7620,7 @@ code = '''
lfs_ssize_t rid = TEST_PRNG(&prng) % (count+1);
// choose create or delete
if (rid == (lfs_ssize_t)count || (TEST_PRNG(&prng) & 1)) {
printf("c%d=%c", rid, alpha[i % 26]);
printf("c%d=%c", rid, 'a'+(i % 26));
count += 1;
} else {
printf("d%d", rid);
@@ -7652,11 +7650,11 @@ code = '''
if (rid == (lfs_ssize_t)count || (TEST_PRNG(&prng) & 1)) {
// update our sim
memmove(sim+rid+1, sim+rid, count-rid);
sim[rid] = alpha[i % 26];
sim[rid] = 'a'+(i % 26);
count += 1;
// update our rbyd
lfsr_rbyd_commit(&lfs, &rbyd, rid, LFSR_ATTRS(
LFSR_ATTR(REG, +1, BUF(&alpha[i % 26], 1)))) => 0;
LFSR_ATTR(REG, +1, BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
} else {
// update our sim
memmove(sim+rid, sim+rid+1, count-rid-1);
@@ -10566,7 +10564,6 @@ code = '''
.weight = 0,
};
lfsr_rbyd_t rbyd;
const char *alpha = "abcdefghijklmnopqrstuvwxyz";
uint8_t buffer[4];
printf("perm: [");
@@ -10581,13 +10578,13 @@ code = '''
uint8_t u = TEST_PRNG(&prng) % M;
if (rid == (lfs_ssize_t)count || op == 0) {
printf("c%d=%c", rid, alpha[i % 26]);
printf("c%d=%c", rid, 'a'+(i % 26));
count += 1;
} else if (op == 1) {
printf("d%d", rid);
count -= 1;
} else if (op == 2) {
printf("a%d,%d=%c", rid, u, alpha[i % 26]);
printf("a%d,%d=%c", rid, u, 'a'+(i % 26));
} else if (op == 3) {
printf("r%d,%d", rid, u);
}
@@ -10620,11 +10617,11 @@ code = '''
// update our sim
memmove(sim+(rid+1)*(M+1), sim+rid*(M+1), (count-rid)*(M+1));
memset(&sim[rid*(M+1)], 0, M+1);
sim[rid*(M+1)] = alpha[i % 26];
sim[rid*(M+1)] = 'a'+(i % 26);
count += 1;
// update our rbyd
lfsr_rbyd_commit(&lfs, &rbyd, rid, LFSR_ATTRS(
LFSR_ATTR(REG, +1, BUF(&alpha[i % 26], 1)))) => 0;
LFSR_ATTR(REG, +1, BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
} else if (op == 1) {
// update our sim
memmove(sim+rid*(M+1), sim+(rid+1)*(M+1), (count-rid-1)*(M+1));
@@ -10634,10 +10631,11 @@ code = '''
LFSR_ATTR(RM, -1, NULL()))) => 0;
} else if (op == 2) {
// update our sim
sim[rid*(M+1) + u+1] = alpha[i % 26];
sim[rid*(M+1) + u+1] = 'a'+(i % 26);
// update our rbyd
lfsr_rbyd_commit(&lfs, &rbyd, rid, LFSR_ATTRS(
LFSR_ATTR(UATTR(u), 0, BUF(&alpha[i % 26], 1)))) => 0;
LFSR_ATTR(
UATTR(u), 0, BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
} else if (op == 3) {
// update our sim
@@ -10721,7 +10719,6 @@ code = '''
lfs_ssize_t rid_;
lfs_size_t weight_;
lfsr_data_t data_;
const char *alpha = "abcdefghijklmnopqrstuvwxyz";
uint8_t buffer[4];
printf("perm: [");
@@ -10736,7 +10733,7 @@ code = '''
lfs_size_t weight = 1 + (TEST_PRNG(&prng) % W);
if (rid == (lfs_ssize_t)count || op == 0) {
printf("c%dw%d=%c", rid, weight, alpha[i % 26]);
printf("c%dw%d=%c", rid, weight, 'a'+(i % 26));
count += 1;
} else if (op == 1) {
printf("d%d", rid);
@@ -10784,12 +10781,13 @@ code = '''
memmove(sim+rid+1, sim+rid, count-rid);
memmove(sim_weights+rid+1, sim_weights+rid,
(count-rid)*sizeof(lfs_size_t));
sim[rid] = alpha[i % 26];
sim[rid] = 'a'+(i % 26);
sim_weights[rid] = weight;
count += 1;
// update our rbyd
lfsr_rbyd_commit(&lfs, &rbyd, weighted_rid, LFSR_ATTRS(
LFSR_ATTR(REG, +weight, BUF(&alpha[i % 26], 1)))) => 0;
LFSR_ATTR(
REG, +weight, BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
} else if (op == 1) {
// get the correct weight from the sim
weight_ = sim_weights[rid];