maxmustermann/godot
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

#52491 Cosmetic: fix type cast and add comment with the algorithm source

Browse source
This commit is contained in:
Kirill Diduk 2021-10-05 21:39:56 +02:00
parent e73eecfec5
commit 1f38b00242
1 changed files with 8 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
core/templates/hashfuncs.h
View file

@ -74,6 +74,13 @@ static inline uint32_t hash_djb2_one_32(uint32_t p_in, uint32_t p_prev = 5381) {
return ((p_prev << 5) + p_prev) + p_in;
}
/**
* Thomas Wang's 64-bit to 32-bit Hash function:
* https://web.archive.org/web/20071223173210/https:/www.concentric.net/~Ttwang/tech/inthash.htm
*
* @param p_int - 64-bit unsigned integer key to be hashed
* @return unsigned 32-bit value representing hashcode
*/
static inline uint32_t hash_one_uint64(const uint64_t p_int) {
uint64_t v = p_int;
v = (~v) + (v << 18); // v = (v << 18) - v - 1;
@ -82,7 +89,7 @@ static inline uint32_t hash_one_uint64(const uint64_t p_int) {
v = v ^ (v >> 11);
v = v + (v << 6);
v = v ^ (v >> 22);
return (int)v;
return uint32_t(v);
}
static inline uint32_t hash_djb2_one_float(double p_in, uint32_t p_prev = 5381) {