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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_mtree.toml
+12 -13
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@@ -34,7 +34,6 @@ code = '''
defines.N = [1, 3]
in = 'lfs.c'
code = '''
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
lfs_t lfs;
lfsr_format(&lfs, CFG) => 0;
lfsr_mount(&lfs, CFG) => 0;
@@ -42,14 +41,14 @@ code = '''
for (lfs_size_t i = 0; i < N; i++) {
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
LFSR_ATTR(UATTR(i), 0, BUF(&alphas[i % 26], 1)))) => 0;
LFSR_ATTR(UATTR(i), 0, BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
}
for (lfs_size_t i = 0; i < N; i++) {
uint8_t buffer[1];
lfsr_mdir_get(&lfs, &lfs.mroot, LFSR_TAG_UATTR(i),
buffer, 1) => 1;
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
assert(memcmp(buffer, &(uint8_t){'a'+(i % 26)}, 1) == 0);
}
lfsr_unmount(&lfs) => 0;
@@ -62,7 +61,7 @@ code = '''
uint8_t buffer[1];
lfsr_mdir_get(&lfs, &lfs.mroot, LFSR_TAG_UATTR(i),
buffer, 1) => 1;
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
assert(memcmp(buffer, &(uint8_t){'a'+(i % 26)}, 1) == 0);
}
lfsr_unmount(&lfs) => 0;
@@ -73,7 +72,6 @@ code = '''
defines.N = [1, 3]
in = 'lfs.c'
code = '''
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
lfs_t lfs;
lfsr_format(&lfs, CFG) => 0;
lfsr_mount(&lfs, CFG) => 0;
@@ -84,14 +82,15 @@ code = '''
lfs.mroot.rbyd.eoff = -1;
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
LFSR_ATTR(UATTR(i), 0, BUF(&alphas[i % 26], 1)))) => 0;
LFSR_ATTR(
UATTR(i), 0, BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
}
for (lfs_size_t i = 0; i < N; i++) {
uint8_t buffer[1];
lfsr_mdir_get(&lfs, &lfs.mroot, LFSR_TAG_UATTR(i),
buffer, 1) => 1;
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
assert(memcmp(buffer, &(uint8_t){'a'+(i % 26)}, 1) == 0);
}
lfsr_unmount(&lfs) => 0;
@@ -104,7 +103,7 @@ code = '''
uint8_t buffer[1];
lfsr_mdir_get(&lfs, &lfs.mroot, LFSR_TAG_UATTR(i),
buffer, 1) => 1;
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
assert(memcmp(buffer, &(uint8_t){'a'+(i % 26)}, 1) == 0);
}
lfsr_unmount(&lfs) => 0;
@@ -115,7 +114,6 @@ code = '''
defines.N = [5, 5000]
in = 'lfs.c'
code = '''
const char *alphas = "abcdefghijklmnopqrstuvwxyz";
lfs_t lfs;
lfsr_format(&lfs, CFG) => 0;
lfsr_mount(&lfs, CFG) => 0;
@@ -123,18 +121,19 @@ code = '''
for (lfs_size_t i = 0; i < N; i++) {
lfsr_mdir_commit(&lfs, &lfs.mroot, LFSR_ATTRS(
LFSR_ATTR(UATTR(1), 0, BUF(&alphas[i % 26], 1)))) => 0;
LFSR_ATTR(
UATTR(1), 0, BUF(&(uint8_t){'a'+(i % 26)}, 1)))) => 0;
uint8_t buffer[4];
lfsr_mdir_get(&lfs, &lfs.mroot, LFSR_TAG_UATTR(1),
buffer, 4) => 1;
assert(memcmp(buffer, &alphas[i % 26], 1) == 0);
assert(memcmp(buffer, &(uint8_t){'a'+(i % 26)}, 1) == 0);
}
uint8_t buffer[4];
lfsr_mdir_get(&lfs, &lfs.mroot, LFSR_TAG_UATTR(1),
buffer, 4) => 1;
assert(memcmp(buffer, &alphas[(N-1) % 26], 1) == 0);
assert(memcmp(buffer, &(uint8_t){'a'+((N-1) % 26)}, 1) == 0);
lfsr_unmount(&lfs) => 0;
@@ -144,7 +143,7 @@ code = '''
lfsr_mdir_get(&lfs, &lfs.mroot, LFSR_TAG_UATTR(1),
buffer, 4) => 1;
assert(memcmp(buffer, &alphas[(N-1) % 26], 1) == 0);
assert(memcmp(buffer, &(uint8_t){'a'+((N-1) % 26)}, 1) == 0);
lfsr_unmount(&lfs) => 0;
'''