src/v8/test/mjsunit/mod.js

// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

function foo() {
  for (var i = 1; i < 100; i++) {
    var answer = 1;
    for (var j = 1; j < 100; j++) {
      if (answer == i) answer = 0;
      // Positive case.
      print(j + " % " + i + " = " + answer);
      m = j % i;
      assertEquals(answer, m, j + " % " + i);
      m = j % (-i);
      assertEquals(answer, m, j + " % -" + i);
      // Negative case.
      m = (-j) % i;
      assertEquals(-answer, m, j + " % " + i);
      // Check for negative zero.
      if (answer == 0) assertEquals(-Infinity, 1/m);
      m = (-j) % (-i);
      assertEquals(-answer, m, j + " % -" + i);
      // Check for negative zero.
      if (answer == 0) assertEquals(-Infinity, 1/m);
      answer++;
    }
  }
}

foo();