diff options
Diffstat (limited to 'Libraries/LibJS/Runtime/Value.cpp')
| -rw-r--r-- | Libraries/LibJS/Runtime/Value.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Libraries/LibJS/Runtime/Value.cpp b/Libraries/LibJS/Runtime/Value.cpp index 901558ecee..13687cb5b3 100644 --- a/Libraries/LibJS/Runtime/Value.cpp +++ b/Libraries/LibJS/Runtime/Value.cpp @@ -258,8 +258,14 @@ Value div(Value lhs, Value rhs) Value mod(Value lhs, Value rhs) { - // FIXME: It seems like JavaScript should allow modulo for doubles as well(?) - return Value(lhs.to_i32() % rhs.to_i32()); + if (lhs.to_number().is_nan() || rhs.to_number().is_nan()) + return js_nan(); + + double index = lhs.to_number().as_double(); + double period = rhs.to_number().as_double(); + double trunc = (double)(i32) (index / period); + + return Value(index - trunc * period); } Value typed_eq(Value lhs, Value rhs) |