michael@0: var a = Math.sin(Math.PI/2);  // spec does not specify precise answer here...
michael@0: if (a === 1) {    // ...but if a === 1 here...
michael@0:     switch (a) {
michael@0:       case 1: break;  // ...then it must also match here
michael@0:       default: throw "FAIL";
michael@0:     }
michael@0: }