mirrors/Odin
1
0
Fork 0
mirror of https://github.com/odin-lang/Odin.git synced 2026-01-03 11:42:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Use next_pow2_isize

Browse Source
This commit is contained in:
gingerBill
2021-07-10 19:57:54 +01:00
parent 332461c0d2
commit 0a61d4bf2b
3 changed files with 20 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/common.cpp
View File

@@ -37,6 +37,7 @@ gb_inline void zero_size(void *ptr, isize len) {
i32 next_pow2(i32 n);
i64 next_pow2(i64 n);
isize next_pow2_isize(isize n);
template <typename U, typename V>
@@ -680,6 +681,24 @@ i64 next_pow2(i64 n) {
n++;
return n;
}
isize next_pow2_isize(isize n) {
if (n <= 0) {
return 0;
}
n--;
n |= n >> 1;
n |= n >> 2;
n |= n >> 4;
n |= n >> 8;
n |= n >> 16;
if (gb_size_of(isize) == 8) {
n |= n >> 32;
}
n++;
return n;
}
i32 bit_set_count(u32 x) {
x -= ((x >> 1) & 0x55555555);