mirror of https://github.com/tc39/test262.git
75 lines
1.7 KiB
JavaScript
75 lines
1.7 KiB
JavaScript
// Copyright 2009 the Sputnik authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: >
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If x is less than or equal to -0 and x is greater than or equal to -0.5,
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Math.round(x) is equal to -0
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es5id: 15.8.2.15_A7
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description: >
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`Math.round(x)` differs from `Math.floor(x + 0.5)`:
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1) for values in [-0.5; -0]
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2) for 0.5 - Number.EPSILON / 4
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3) for odd integers in [-(2 / Number.EPSILON - 1); -(1 / Number.EPSILON + 1)] or in [1 / Number.EPSILON + 1; 2 / Number.EPSILON - 1]
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---*/
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// CHECK#1
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if (1 / Math.round(-0.5) !== 1 / -0) {
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$ERROR("#1: '1 / Math.round(-0.5) !== 1 / -0'");
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}
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// CHECK#2
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if (1 / Math.round(-0.25) !== 1 / -0) {
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$ERROR("#2: '1 / Math.round(-0.25) !== 1 / -0'");
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}
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// CHECK#3
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if (1 / Math.round(-0) !== 1 / -0) {
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$ERROR("#3: '1 / Math.round(-0) !== 1 / -0'");
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}
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var x = 0;
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// CHECK#4
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x = 0.5 - Number.EPSILON / 4;
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if (1 / Math.round(x) !== 1 / 0) {
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$ERROR("#4: '1 / Math.round(" + x + ") !== 1 / 0'");
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}
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// CHECK#5
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x = -(2 / Number.EPSILON - 1);
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if (Math.round(x) !== x) {
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$ERROR("#5: 'Math.round(" + x + ") !== " + x + "'");
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}
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// CHECK#6
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x = -(1.5 / Number.EPSILON - 1);
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if (Math.round(x) !== x) {
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$ERROR("#6: 'Math.round(" + x + ") !== " + x + "'");
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}
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// CHECK#7
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x = -(1 / Number.EPSILON + 1);
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if (Math.round(x) !== x) {
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$ERROR("#7: 'Math.round(" + x + ") !== " + x + "'");
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}
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// CHECK#8
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x = 1 / Number.EPSILON + 1;
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if (Math.round(x) !== x) {
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$ERROR("#8: 'Math.round(" + x + ") !== " + x + "'");
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}
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// CHECK#9
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x = 1.5 / Number.EPSILON - 1;
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if (Math.round(x) !== x) {
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$ERROR("#9: 'Math.round(" + x + ") !== " + x + "'");
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}
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// CHECK#10
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x = 2 / Number.EPSILON - 1;
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if (Math.round(x) !== x) {
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$ERROR("#10: 'Math.round(" + x + ") !== " + x + "'");
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}
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