1 files changed, 83 insertions, 0 deletions
diff --git a/js/src/tests/js1_5/Regress/regress-329383.js b/js/src/tests/js1_5/Regress/regress-329383.js
new file mode 100644
index 000000000..00c7260ca
--- /dev/null
+++ b/js/src/tests/js1_5/Regress/regress-329383.js
@@ -0,0 +1,83 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 329383;
+var summary = 'Math copysign issues';
+var actual = '';
+var expect = '';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+var inputs = [
+  -Infinity,
+  -10.01,
+  -9.01,
+  -8.01,
+  -7.01,
+  -6.01,
+  -5.01,
+  -4.01,
+  -Math.PI,
+  -3.01,
+  -2.01,
+  -1.01,
+  -0.5,
+  -0.49,
+  -0.01,
+  -0,
+  0,
+  +0,
+  0.01,
+  0.49,
+  0.50,
+  0,
+  1.01,
+  2.01,
+  3.01,
+  Math.PI,
+  4.01,
+  5.01,
+  6.01,
+  7.01,
+  8.01,
+  9.01,
+  10.01,
+  Infinity
+  ];
+
+var iinput;
+
+for (iinput = 0; iinput < inputs.length; iinput++)
+{
+  var input = inputs[iinput];
+  reportCompare(Math.round(input),
+                emulateRound(input),
+                summary + ': Math.round(' + input + ')');
+}
+
+reportCompare(isNaN(Math.round(NaN)),
+              isNaN(emulateRound(NaN)),
+              summary + ': Math.round(' + input + ')');
+
+function emulateRound(x)
+{
+  if (!isFinite(x) || x === 0) return x
+    if (-0.5 <= x && x < 0) return -0
+      return Math.floor(x + 0.5)
+      }
+
+var z;
+
+z = Math.min(-0, 0);
+
+reportCompare(-Math.PI, Math.atan2(z, z), summary + ': Math.atan2(-0, -0)');
+reportCompare(-Infinity, 1/z, summary + ': 1/-0');
+
+z = Math.max(-0, 0);
+
+reportCompare(0, Math.atan2(z, z), summary + ': Math.atan2(0, 0)');
+reportCompare(Infinity, 1/z, summary + ': 1/0');