diff --git a/lab3/main_test.js b/lab3/main_test.js
index e6d6414..71bea32 100644
--- a/lab3/main_test.js
+++ b/lab3/main_test.js
@@ -3,3 +3,57 @@ const assert = require('assert');
 const { Calculator } = require('./main');
 
 // TODO: write your tests here
+it('Param-Error', () => {
+    const exp_testcases = [
+        {param: NaN, expected: {name: 'Error', message: 'unsupported operand type'}},
+        {param: 9999999, expected: {name: 'Error', message: 'overflow'}}
+    ];
+
+    const Calc = new Calculator();
+
+    for( const ts of exp_testcases){
+        assert.throws(() => {
+            Calc.exp(ts.param);
+        }, ts.expected
+        );
+    };
+
+    const log_testcases = [
+        {param: NaN, expected: {name: 'Error', message: 'unsupported operand type'}},
+        {param: 0, expected: {name: 'Error', message: 'math domain error (1)'}},
+        {param: -1, expected: {name: 'Error', message: 'math domain error (2)'}}
+    ];
+
+    for( const ts of log_testcases){
+        assert.throws(() => {
+            Calc.log(ts.param);
+        }, ts.expected
+        );
+    };
+
+})
+
+it('test', () => {
+    const exp_testcases = [
+        {param: 0, expected: 1},
+        {param: 1, expected: Math.exp(1)},
+        {param: -1, expected: Math.exp(-1)}
+    ];
+
+    const Calc = new Calculator();
+
+    for( const ts of exp_testcases){
+        assert.strictEqual(Calc.exp(ts.param), ts.expected);
+    };
+
+    const log_testcases = [
+        {param: 9, expected: Math.log(9)},
+        {param: 1, expected: Math.log(1)},
+        {param: 100, expected: Math.log(100)}
+    ];
+
+    for( const ts of log_testcases){
+        assert.strictEqual(Calc.log(ts.param), ts.expected);
+    };
+
+})
diff --git a/lab5/antiasan.c b/lab5/antiasan.c
index 8a8936d..ac479d7 100644
--- a/lab5/antiasan.c
+++ b/lab5/antiasan.c
@@ -2,5 +2,9 @@
 
 void antiasan(unsigned long addr)
 {
+    unsigned long shadow_addr = ((addr + 0x87 ) >> 3) + 0x7fff8000;
 
+    for (int i = 0; i < 4; i += 1) {
+        *(unsigned int *)(shadow_addr + i * 4) = 0;
+    }   
 }