number-isinteger.js 1.58 KB
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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --allow-natives-syntax

function test(f) {
  assertTrue(f(0));
  assertFalse(f(Number.MIN_VALUE));
  assertTrue(f(Number.MAX_VALUE));
  assertTrue(f(Number.MIN_SAFE_INTEGER));
  assertTrue(f(Number.MIN_SAFE_INTEGER - 13));
  assertTrue(f(Number.MAX_SAFE_INTEGER));
  assertTrue(f(Number.MAX_SAFE_INTEGER + 23));
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  assertTrue(f(0));
  assertTrue(f(-1));
  assertTrue(f(123456));
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  assertFalse(f(Number.NaN));
  assertFalse(f(Number.POSITIVE_INFINITY));
  assertFalse(f(Number.NEGATIVE_INFINITY));
  assertFalse(f(1 / 0));
  assertFalse(f(-1 / 0));
  assertFalse(f(Number.EPSILON));
}

function f(x) {
  return Number.isInteger(+x);
}

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%PrepareFunctionForOptimization(f);
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test(f);
test(f);
%OptimizeFunctionOnNextCall(f);
test(f);
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function test2(f) {
  assertTrue(f(0));
  assertFalse(f(Number.MIN_VALUE));
  assertTrue(f(Number.MAX_VALUE));
  assertTrue(f(Number.MIN_SAFE_INTEGER));
  assertTrue(f(Number.MIN_SAFE_INTEGER - 13));
  assertTrue(f(Number.MAX_SAFE_INTEGER));
  assertTrue(f(Number.MAX_SAFE_INTEGER + 23));
  assertTrue(f(0));
  assertTrue(f(-1));
  assertTrue(f(123456));
  assertFalse(f(Number.NaN));
  assertFalse(f(Number.POSITIVE_INFINITY));
  assertFalse(f(Number.NEGATIVE_INFINITY));
  assertFalse(f(1 / 0));
  assertFalse(f(-1 / 0));
  assertFalse(f(Number.EPSILON));
}

function f2(x) {
  return Number.isInteger(x);
}

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%PrepareFunctionForOptimization(f2);
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test2(f2);
test2(f2);
%OptimizeFunctionOnNextCall(f2);
test2(f2);