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LibJS: Basic NaN support

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This patch adds js_nan() for constructing a NaN value. You can check
if a Value is NaN with Value::is_nan().
This commit is contained in:
Andreas Kling 2020-03-27 12:26:37 +01:00
parent 23c5323a70
commit 9a78b4af2c
3 changed files with 23 additions and 7 deletions
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7
Libraries/LibJS/Runtime/Value.h
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@ -53,6 +53,8 @@ public:
bool is_cell() const { return is_string() || is_object(); }
bool is_array() const;
bool is_nan() const { return is_number() && __builtin_isnan( as_double()); }
Value()
: m_type(Type::Undefined)
{
@ -166,6 +168,11 @@ inline Value js_null()
return Value(Value::Type::Null);
}
inline Value js_nan()
{
return Value(__builtin_nan(""));
}
Value greater_than(Value lhs, Value rhs);
Value greater_than_equals(Value lhs, Value rhs);
Value less_than(Value lhs, Value rhs);