system/serenity
system/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity synced 2024-07-22 02:26:11 +00:00
Code Issues Actions 5 Packages Projects Releases Wiki Activity

LibJS: Correct modulo behaviour in to_i32 to match the specification

Browse source
This commit is contained in:
Idan Horowitz 2021-06-06 02:33:55 +03:00 committed by Linus Groh
parent bbf75d0bea
commit aa5b144f90
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
Userland/Libraries/LibJS/Runtime/Value.cpp
View file

@ -566,7 +566,8 @@ i32 Value::to_i32_slow_case(GlobalObject& global_object) const
auto int_val = floor(abs);
if (signbit(value))
int_val = -int_val;
auto int32bit = fmod(int_val, 4294967296.0);
auto remainder = fmod(int_val, 4294967296.0);
auto int32bit = remainder >= 0.0 ? remainder : remainder + 4294967296.0; // The notation “x modulo y” computes a value k of the same sign as y
if (int32bit >= 2147483648.0)
int32bit -= 4294967296.0;
return static_cast<i32>(int32bit);