LibJS: Implement exponentiation (** operator)

2 files changed, 7 insertions, 0 deletions

diff --git a/Libraries/LibJS/Runtime/Value.cpp b/Libraries/LibJS/Runtime/Value.cpp
index 13687cb5b3..ea0594245f 100644
--- a/Libraries/LibJS/Runtime/Value.cpp
+++ b/Libraries/LibJS/Runtime/Value.cpp
@@ -35,6 +35,7 @@
 #include <LibJS/Runtime/PrimitiveString.h>
 #include <LibJS/Runtime/StringObject.h>
 #include <LibJS/Runtime/Value.h>
+#include <math.h>
 
 namespace JS {
 
@@ -268,6 +269,11 @@ Value mod(Value lhs, Value rhs)
     return Value(index - trunc * period);
 }
 
+Value exp(Value lhs, Value rhs)
+{
+    return Value(pow(lhs.to_number().as_double(), rhs.to_number().as_double()));
+}
+
 Value typed_eq(Value lhs, Value rhs)
 {
     if (rhs.type() != lhs.type())
diff --git a/Libraries/LibJS/Runtime/Value.h b/Libraries/LibJS/Runtime/Value.h
index df0e742ab9..b6d30c80f1 100644
--- a/Libraries/LibJS/Runtime/Value.h
+++ b/Libraries/LibJS/Runtime/Value.h
@@ -196,6 +196,7 @@ Value sub(Value lhs, Value rhs);
 Value mul(Value lhs, Value rhs);
 Value div(Value lhs, Value rhs);
 Value mod(Value lhs, Value rhs);
+Value exp(Value lhs, Value rhs);
 Value eq(Value lhs, Value rhs);
 Value typed_eq(Value lhs, Value rhs);
 Value instance_of(Value lhs, Value rhs);