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-rw-r--r--libsolidity/ast/Types.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/libsolidity/ast/Types.h b/libsolidity/ast/Types.h
index 05f506f1..ecfc2333 100644
--- a/libsolidity/ast/Types.h
+++ b/libsolidity/ast/Types.h
@@ -446,6 +446,9 @@ public:
/// @returns true if the value is negative.
bool isNegative() const { return m_value < 0; }
+ /// @returns true if the value is zero.
+ bool isZero() const { return m_value == 0; }
+
private:
rational m_value;