MirrorHub/construct
0
0
Fork 0
mirror of https://github.com/matrix-construct/construct synced 2024-11-29 02:02:38 +01:00
Code Issues Releases Wiki Activity

ircd::utf16: Fix masking of unused lane result values.

Browse source
This commit is contained in:
Jason Volk 2020-09-03 21:40:47 -07:00
parent 0d586d6d0c
commit c92127a8cd
1 changed files with 12 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
ircd/utf.cc
View file

@ -137,6 +137,12 @@ noexcept
(codepoint_paired <= 0xffffU) & ~(shl<32>(codepoint_high))
};
// When one surrogate is input, only lane[0]
const u32x4 ret_codepoint_single
{
codepoint_unpaired & ~surrogate_pair_range & ~surrogate_deuce
};
// When two surrogates in a pair are input, lane[0] only
const u32x4 ret_codepoint_paired
{
@ -149,16 +155,14 @@ noexcept
codepoint_unpaired & ~surrogate_pair_range & surrogate_deuce
};
// When one surrogate is input, only lane[0]
const u32x4 ret_codepoint_single
{
codepoint_unpaired & ~surrogate_pair_range & ~surrogate_deuce
};
static const u32x4
mask_one { -1U, 0U, 0U, 0U, },
mask_two { -1U, -1U, 0U, 0U, };
return 0
| ret_codepoint_paired
| ret_codepoint_unpaired
| ret_codepoint_single
| (ret_codepoint_single & mask_one)
| (ret_codepoint_paired & mask_one)
| (ret_codepoint_unpaired & mask_two)
;
}