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+/* -*- 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/. */
+
+
+/**
+ File Name: 11.13.2-5.js
+ ECMA Section: 11.13.2 Compound Assignment: -=
+ Description:
+
+ *= /= %= -= -= <<= >>= >>>= &= ^= |=
+
+ 11.13.2 Compound assignment ( op= )
+
+ The production AssignmentExpression :
+ LeftHandSideExpression @ = AssignmentExpression, where @ represents one of
+ the operators indicated above, is evaluated as follows:
+
+ 1. Evaluate LeftHandSideExpression.
+ 2. Call GetValue(Result(1)).
+ 3. Evaluate AssignmentExpression.
+ 4. Call GetValue(Result(3)).
+ 5. Apply operator @ to Result(2) and Result(4).
+ 6. Call PutValue(Result(1), Result(5)).
+ 7. Return Result(5).
+
+ Author: christine@netscape.com
+ Date: 12 november 1997
+*/
+var SECTION = "11.13.2-5";
+var VERSION = "ECMA_1";
+startTest();
+
+writeHeaderToLog( SECTION + " Compound Assignment: -=");
+
+// If either operand is NaN, result is NaN
+
+new TestCase( SECTION, "VAR1 = NaN; VAR2=1; VAR1 -= VAR2", Number.NaN, eval("VAR1 = Number.NaN; VAR2=1; VAR1 -= VAR2") );
+new TestCase( SECTION, "VAR1 = NaN; VAR2=1; VAR1 -= VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NaN; VAR2=1; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = NaN; VAR2=0; VAR1 -= VAR2", Number.NaN, eval("VAR1 = Number.NaN; VAR2=0; VAR1 -= VAR2") );
+new TestCase( SECTION, "VAR1 = NaN; VAR2=0; VAR1 -= VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NaN; VAR2=0; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = 0; VAR2=NaN; VAR1 -= VAR2", Number.NaN, eval("VAR1 = 0; VAR2=Number.NaN; VAR1 -= VAR2") );
+new TestCase( SECTION, "VAR1 = 0; VAR2=NaN; VAR1 -= VAR2; VAR1", Number.NaN, eval("VAR1 = 0; VAR2=Number.NaN; VAR1 -= VAR2; VAR1") );
+
+// the sum of two Infinities the same sign is the infinity of that sign
+// the sum of two Infinities of opposite sign is NaN
+
+new TestCase( SECTION, "VAR1 = Infinity; VAR2= Infinity; VAR1 -= VAR2; VAR1", Number.NaN, eval("VAR1 = Number.POSITIVE_INFINITY; VAR2 = Number.POSITIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = Infinity; VAR2= -Infinity; VAR1 -= VAR2; VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = Number.POSITIVE_INFINITY; VAR2 = Number.NEGATIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 =-Infinity; VAR2= Infinity; VAR1 -= VAR2; VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = Number.NEGATIVE_INFINITY; VAR2 = Number.POSITIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 =-Infinity; VAR2=-Infinity; VAR1 -= VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NEGATIVE_INFINITY; VAR2 = Number.NEGATIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+
+// the sum of an infinity and a finite value is equal to the infinite operand
+
+new TestCase( SECTION, "VAR1 = 0; VAR2= Infinity; VAR1 -= VAR2;VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = 0; VAR2 = Number.POSITIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = -0; VAR2= Infinity; VAR1 -= VAR2;VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = -0; VAR2 = Number.POSITIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = 0; VAR2= -Infinity; VAR1 -= VAR2;VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = 0; VAR2 = Number.NEGATIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = -0; VAR2= -Infinity; VAR1 -= VAR2;VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = -0; VAR2 = Number.NEGATIVE_INFINITY; VAR1 -= VAR2; VAR1") );
+
+// the sum of two negative zeros is -0. the sum of two positive zeros, or of two zeros of opposite sign, is +0
+
+new TestCase( SECTION, "VAR1 = 0; VAR2= -0; VAR1 -= VAR2", 0, eval("VAR1 = 0; VAR2 = 0; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = 0; VAR2= 0; VAR1 -= VAR2", 0, eval("VAR1 = 0; VAR2 = -0; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = -0; VAR2= -0; VAR1 -= VAR2", 0, eval("VAR1 = -0; VAR2 = 0; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = -0; VAR2= 0; VAR1 -= VAR2", -0, eval("VAR1 = -0; VAR2 = -0; VAR1 -= VAR2; VAR1") );
+
+// the sum of a zero and a nonzero finite value is eqal to the nonzero operand
+
+new TestCase( SECTION, "VAR1 = 0; VAR2= -1; VAR1 -= VAR2; VAR1", 1, eval("VAR1 = 0; VAR2 = -1; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = -0; VAR2= -1; VAR1 -= VAR2; VAR1", 1, eval("VAR1 = -0; VAR2 = -1; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = -0; VAR2= 1; VAR1 -= VAR2; VAR1", -1, eval("VAR1 = -0; VAR2 = 1; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = 0; VAR2= 1; VAR1 -= VAR2; VAR1", -1, eval("VAR1 = 0; VAR2 = 1; VAR1 -= VAR2; VAR1") );
+
+// the sum of a zero and a nozero finite value is equal to the nonzero operand.
+new TestCase( SECTION, "VAR1 = 0; VAR2=-1; VAR1 -= VAR2", 1, eval("VAR1 = 0; VAR2=-1; VAR1 -= VAR2;VAR1") );
+new TestCase( SECTION, "VAR1 = 0; VAR2=-1; VAR1 -= VAR2;VAR1", 1, eval("VAR1 = 0; VAR2=-1; VAR1 -= VAR2;VAR1") );
+
+// the sum of two nonzero finite values of the same magnitude and opposite sign is +0
+new TestCase( SECTION, "VAR1 = Number.MAX_VALUE; VAR2= Number.MAX_VALUE; VAR1 -= VAR2; VAR1", 0, eval("VAR1 = Number.MAX_VALUE; VAR2= Number.MAX_VALUE; VAR1 -= VAR2; VAR1") );
+new TestCase( SECTION, "VAR1 = Number.MIN_VALUE; VAR2= Number.MIN_VALUE; VAR1 -= VAR2; VAR1", 0, eval("VAR1 = Number.MIN_VALUE; VAR2= Number.MIN_VALUE; VAR1 -= VAR2; VAR1") );
+
+/*
+ new TestCase( SECTION, "VAR1 = 10; VAR2 = '0XFF', VAR1 -= VAR2", 2550, eval("VAR1 = 10; VAR2 = '0XFF', VAR1 -= VAR2") );
+ new TestCase( SECTION, "VAR1 = '0xFF'; VAR2 = 0xA, VAR1 -= VAR2", 2550, eval("VAR1 = '0XFF'; VAR2 = 0XA, VAR1 -= VAR2") );
+
+ new TestCase( SECTION, "VAR1 = '10'; VAR2 = '255', VAR1 -= VAR2", 2550, eval("VAR1 = '10'; VAR2 = '255', VAR1 -= VAR2") );
+ new TestCase( SECTION, "VAR1 = '10'; VAR2 = '0XFF', VAR1 -= VAR2", 2550, eval("VAR1 = '10'; VAR2 = '0XFF', VAR1 -= VAR2") );
+ new TestCase( SECTION, "VAR1 = '0xFF'; VAR2 = 0xA, VAR1 -= VAR2", 2550, eval("VAR1 = '0XFF'; VAR2 = 0XA, VAR1 -= VAR2") );
+
+ // boolean cases
+ new TestCase( SECTION, "VAR1 = true; VAR2 = false; VAR1 -= VAR2", 0, eval("VAR1 = true; VAR2 = false; VAR1 -= VAR2") );
+ new TestCase( SECTION, "VAR1 = true; VAR2 = true; VAR1 -= VAR2", 1, eval("VAR1 = true; VAR2 = true; VAR1 -= VAR2") );
+
+ // object cases
+ new TestCase( SECTION, "VAR1 = new Boolean(true); VAR2 = 10; VAR1 -= VAR2;VAR1", 10, eval("VAR1 = new Boolean(true); VAR2 = 10; VAR1 -= VAR2; VAR1") );
+ new TestCase( SECTION, "VAR1 = new Number(11); VAR2 = 10; VAR1 -= VAR2; VAR1", 110, eval("VAR1 = new Number(11); VAR2 = 10; VAR1 -= VAR2; VAR1") );
+ new TestCase( SECTION, "VAR1 = new Number(11); VAR2 = new Number(10); VAR1 -= VAR2", 110, eval("VAR1 = new Number(11); VAR2 = new Number(10); VAR1 -= VAR2") );
+ new TestCase( SECTION, "VAR1 = new String('15'); VAR2 = new String('0xF'); VAR1 -= VAR2", 255, eval("VAR1 = String('15'); VAR2 = new String('0xF'); VAR1 -= VAR2") );
+
+*/
+
+test();