Added Jacobi functionality, more bn features - plus tests.

test/sjcl-extramath-test.js

@@ -0,0 +1,39 @@
+var assert = require('assert');
+var utils  = require('./testutils');
+var sjcl   = require('../build/sjcl');
+
+describe('SJCL Extramath', function() {
+  describe('setBitM', function() {
+    it('0x0f set bit 4 => 0x1f', function () {
+      var val = new sjcl.bn("0f");
+      val.setBitM(4);
+      assert.strictEqual(val.toString(), '0x1f');
+    });
+    it('0x0f set bit 23 => 0x80000f', function () {
+      var val = new sjcl.bn("0f");
+      val.setBitM(23);
+      assert.strictEqual(val.toString(), '0x80000f');
+    });
+    it('0x0f set bit 24 => 0x100000f', function () {
+      var val = new sjcl.bn("0f");
+      val.setBitM(24);
+      assert.strictEqual(val.toString(), '0x100000f');
+    });
+  });
+  describe('testBit', function() {
+    it('0x03 test bit 0 => 1', function () {
+      var val = new sjcl.bn("03");
+      assert.strictEqual(val.testBit(0), 1);
+    });
+    it('0x03 test bit 1 => 1', function () {
+      var val = new sjcl.bn("03");
+      assert.strictEqual(val.testBit(1), 1);
+    });
+    it('0x03 test bit 2 => 0', function () {
+      var val = new sjcl.bn("03");
+      assert.strictEqual(val.testBit(2), 0);
+    });
+  });
+});
+
+// vim:sw=2:sts=2:ts=8:et