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Make hash procedures contextless where possible

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This commit is contained in:
gingerBill
2024-03-27 12:54:37 +00:00
parent 3bc7c51325
commit 6422c090f2
4 changed files with 22 additions and 22 deletions
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core/hash/hash.odin
+12 -12
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@@ -4,7 +4,7 @@ import "core:mem"
import "base:intrinsics"
@(optimization_mode="speed")
adler32 :: proc(data: []byte, seed := u32(1)) -> u32 #no_bounds_check {
adler32 :: proc "contextless" (data: []byte, seed := u32(1)) -> u32 #no_bounds_check {
ADLER_CONST :: 65521
@@ -47,7 +47,7 @@ adler32 :: proc(data: []byte, seed := u32(1)) -> u32 #no_bounds_check {
}
@(optimization_mode="speed")
djb2 :: proc(data: []byte, seed := u32(5381)) -> u32 {
djb2 :: proc "contextless" (data: []byte, seed := u32(5381)) -> u32 {
hash: u32 = seed
for b in data {
hash = (hash << 5) + hash + u32(b) // hash * 33 + u32(b)
@@ -55,7 +55,7 @@ djb2 :: proc(data: []byte, seed := u32(5381)) -> u32 {
return hash
}
djbx33a :: proc(data: []byte, seed := u32(5381)) -> (result: [16]byte) #no_bounds_check {
djbx33a :: proc "contextless" (data: []byte, seed := u32(5381)) -> (result: [16]byte) #no_bounds_check {
state := [4]u32{seed, seed, seed, seed}
s: u32 = 0
@@ -74,7 +74,7 @@ djbx33a :: proc(data: []byte, seed := u32(5381)) -> (result: [16]byte) #no_bound
// If you have a choice, prefer fnv32a
@(optimization_mode="speed")
fnv32_no_a :: proc(data: []byte, seed := u32(0x811c9dc5)) -> u32 {
fnv32_no_a :: proc "contextless" (data: []byte, seed := u32(0x811c9dc5)) -> u32 {
h: u32 = seed
for b in data {
h = (h * 0x01000193) ~ u32(b)
@@ -87,7 +87,7 @@ fnv64 :: fnv64_no_a // NOTE(bill): Not a fan of these aliases but seems necessar
// If you have a choice, prefer fnv64a
@(optimization_mode="speed")
fnv64_no_a :: proc(data: []byte, seed := u64(0xcbf29ce484222325)) -> u64 {
fnv64_no_a :: proc "contextless" (data: []byte, seed := u64(0xcbf29ce484222325)) -> u64 {
h: u64 = seed
for b in data {
h = (h * 0x100000001b3) ~ u64(b)
@@ -95,7 +95,7 @@ fnv64_no_a :: proc(data: []byte, seed := u64(0xcbf29ce484222325)) -> u64 {
return h
}
@(optimization_mode="speed")
fnv32a :: proc(data: []byte, seed := u32(0x811c9dc5)) -> u32 {
fnv32a :: proc "contextless" (data: []byte, seed := u32(0x811c9dc5)) -> u32 {
h: u32 = seed
for b in data {
h = (h ~ u32(b)) * 0x01000193
@@ -104,7 +104,7 @@ fnv32a :: proc(data: []byte, seed := u32(0x811c9dc5)) -> u32 {
}
@(optimization_mode="speed")
fnv64a :: proc(data: []byte, seed := u64(0xcbf29ce484222325)) -> u64 {
fnv64a :: proc "contextless" (data: []byte, seed := u64(0xcbf29ce484222325)) -> u64 {
h: u64 = seed
for b in data {
h = (h ~ u64(b)) * 0x100000001b3
@@ -113,7 +113,7 @@ fnv64a :: proc(data: []byte, seed := u64(0xcbf29ce484222325)) -> u64 {
}
@(optimization_mode="speed")
jenkins :: proc(data: []byte, seed := u32(0)) -> u32 {
jenkins :: proc "contextless" (data: []byte, seed := u32(0)) -> u32 {
hash: u32 = seed
for b in data {
hash += u32(b)
@@ -127,7 +127,7 @@ jenkins :: proc(data: []byte, seed := u32(0)) -> u32 {
}
@(optimization_mode="speed")
murmur32 :: proc(data: []byte, seed := u32(0)) -> u32 {
murmur32 :: proc "contextless" (data: []byte, seed := u32(0)) -> u32 {
c1_32: u32 : 0xcc9e2d51
c2_32: u32 : 0x1b873593
@@ -178,7 +178,7 @@ murmur32 :: proc(data: []byte, seed := u32(0)) -> u32 {
// See https://github.com/aappleby/smhasher/blob/master/src/MurmurHash2.cpp#L96
@(optimization_mode="speed")
murmur64a :: proc(data: []byte, seed := u64(0x9747b28c)) -> u64 {
murmur64a :: proc "contextless" (data: []byte, seed := u64(0x9747b28c)) -> u64 {
m :: 0xc6a4a7935bd1e995
r :: 47
@@ -219,7 +219,7 @@ murmur64a :: proc(data: []byte, seed := u64(0x9747b28c)) -> u64 {
// See https://github.com/aappleby/smhasher/blob/master/src/MurmurHash2.cpp#L140
@(optimization_mode="speed")
murmur64b :: proc(data: []byte, seed := u64(0x9747b28c)) -> u64 {
murmur64b :: proc "contextless" (data: []byte, seed := u64(0x9747b28c)) -> u64 {
m :: 0x5bd1e995
r :: 24
@@ -287,7 +287,7 @@ murmur64b :: proc(data: []byte, seed := u64(0x9747b28c)) -> u64 {
}
@(optimization_mode="speed")
sdbm :: proc(data: []byte, seed := u32(0)) -> u32 {
sdbm :: proc "contextless" (data: []byte, seed := u32(0)) -> u32 {
hash: u32 = seed
for b in data {
hash = u32(b) + (hash<<6) + (hash<<16) - hash