JSTests/test262/test/language/expressions/modulus/S11.5.3_A4_T2.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: >
    The result of a ECMAScript floating-point remainder operation is
    determined by the rules of IEEE arithmetics
es5id: 11.5.3_A4_T2
description: >
    The sign of the finite non-zero value result equals the sign of
    the divided
---*/

//CHECK#1
if (1 % 1 !== 0) {
  $ERROR('#1.1: 1 % 1 === 0. Actual: ' + (1 % 1));
} else {
  if (1 / (1 % 1) !== Number.POSITIVE_INFINITY) {
    $ERROR('#1.2: 1 % 1 === + 0. Actual: -0');
  }
}

//CHECK#2
if (-1 % -1 !== -0) {
  $ERROR('#2.1: -1 % -1 === 0. Actual: ' + (-1 % -1));
} else {
  if (1 / (-1 % -1) !== Number.NEGATIVE_INFINITY) {
    $ERROR('#2.2: -1 % -1 === - 0. Actual: +0');
  }
}

//CHECK#3
if (-1 % 1 !== -0) {
  $ERROR('#3.1: -1 % 1 === 0. Actual: ' + (-1 % 1));
} else {
  if (1 / (-1 % 1) !== Number.NEGATIVE_INFINITY) {
    $ERROR('#3.2: -1 % 1 === - 0. Actual: +0');
  }
}

//CHECK#4
if (1 % -1 !== 0) {
  $ERROR('#4.1: 1 % -1 === 0. Actual: ' + (1 % -1));
} else {
  if (1 / (1 % -1) !== Number.POSITIVE_INFINITY) {
    $ERROR('#4.2: 1 % -1 === + 0. Actual: -0');
  }
}

//CHECK#5
if (101 % 51 !== 50) {
  $ERROR('#5: 101 % 51 === 50. Actual: ' + (101 % 51));
}

//CHECK#6
if (101 % -51 !== 50) {
  $ERROR('#6: 101 % -51 === 50. Actual: ' + (101 % -51));
}

//CHECK#7
if (-101 % 51 !== -50) {
  $ERROR('#7: -101 % 51 === -50. Actual: ' + (-101 % 51));
}

//CHECK#8
if (-101 % -51 !== -50) {
  $ERROR('#8: -101 % -51 === -50. Actual: ' + (-101 % -51));
}