From 395b8ed9daa18b9a5f2cc0e6e840f21da71feb3b Mon Sep 17 00:00:00 2001
From: William Baker <bbrk24@gmail.com>
Date: Mon, 20 Nov 2023 11:36:45 -0500
Subject: [PATCH] fix compiler exp

---
 CHANGELOG.md       | 4 ++++
 src/compiler.cpp   | 2 +-
 tests/compiler/exp | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)
 create mode 120000 tests/compiler/exp

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b06c828..5d876c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file. See [Keep a
 
 ## Unreleased
 
+### Fixed
+
+- The EXP opcode now behaves consistently between the interpreter and the C compiler.
+
 ### Added
 
 - You can now customize the colors of the threads in the online debugger.
diff --git a/src/compiler.cpp b/src/compiler.cpp
index 1f337d2..a2b1aad 100644
--- a/src/compiler.cpp
+++ b/src/compiler.cpp
@@ -143,7 +143,7 @@ void compiler::get_c_code(const instruction& i, std::ostream& os, bool assume_as
             cerr << "Nondeterministic instructions are not yet supported for compiled programs." << endl;
             exit(EXIT_FAILURE);
         case op::EXP:
-            os << "lws_push(stack, 1 << lws_pop(stack));";
+            os << "lws_push(stack, 1 << (lws_pop(stack) + 8) >> 8);";
             return;
         case op::SWP:
             os << "{"
diff --git a/tests/compiler/exp b/tests/compiler/exp
new file mode 120000
index 0000000..95d177c
--- /dev/null
+++ b/tests/compiler/exp
@@ -0,0 +1 @@
+../cli/exp
\ No newline at end of file