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LibJS: Add Value::to_size_t()

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This commit is contained in:
Linus Groh 2020-04-30 22:41:30 +01:00 • committed by Andreas Kling
parent 62671bea68
commit 65dbe17dd7
3 changed files with 13 additions and 4 deletions
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12
Libraries/LibJS/Runtime/Value.cpp
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@ -183,6 +183,16 @@ double Value::to_double() const
return to_number().as_double();
}
size_t Value::to_size_t() const
{
if (is_empty())
return 0;
auto number = to_number();
if (number.is_nan() || number.as_double() <= 0)
return 0;
return min(number.to_i32(), (i32)pow(2, 53) - 1);
}
Value greater_than(Interpreter&, Value lhs, Value rhs)
{
return Value(lhs.to_number().as_double() > rhs.to_number().as_double());
@ -313,7 +323,7 @@ Value mod(Interpreter&, Value lhs, Value rhs)
double index = lhs.to_number().as_double();
double period = rhs.to_number().as_double();
double trunc = (double)(i32) (index / period);
double trunc = (double)(i32)(index / period);
return Value(index - trunc * period);
}