blob: dc00f9e0e83d03da66f07b57c3eeeeb3f3d427c2 [file] [log] [blame]
 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. /// @assertion num remainder(num other) /// Returns the remainder of the truncating division of this by other. /// /// The result r of this operation satisfies: this == (this ~/ other) * other + r. /// As a consequence the remainder r has the same sign as the divider this. /// @author vasya import "../../../Utils/expect.dart"; import "dart:math" as Math; main() { check(0.0, 1, 0.5); check(0.0, 1, -0.5); check(0.25, 1, 0.375); check(0.25, 1, -0.375); check(-0.25, -1, 0.375); check(-0.25, -1, -0.375); final double MIN_DOUBLE = Math.pow(2.0, -1074) as double; final double NEG_MIN_DOUBLE = -1 * MIN_DOUBLE; final double MAX_DOUBLE = (2 - Math.pow(2.0, -52)) * Math.pow(2.0, 1023) as double; final double NEG_MAX_DOUBLE = -1 * MAX_DOUBLE; check(0, 0, MIN_DOUBLE); check(0, 0, NEG_MIN_DOUBLE); check(0, 0, MAX_DOUBLE); check(0, 0, NEG_MAX_DOUBLE); check(1, 1, MAX_DOUBLE); check(1, 1, NEG_MAX_DOUBLE); check(1, 1, double.infinity); check(-1, -1, double.infinity); check(1, 1, double.negativeInfinity); check(-1, -1, double.negativeInfinity); check(0x1000000000000000, 0x1000000000000000, double.infinity); check(-0x1000000000000000, -0x1000000000000000, double.infinity); check(0x1000000000000000, 0x1000000000000000, double.negativeInfinity); check(-0x1000000000000000, -0x1000000000000000, double.negativeInfinity); Expect.isTrue((1.remainder(0.0)).isNaN); Expect.isTrue((1.remainder(-0.0)).isNaN); Expect.isTrue((-1.remainder(0.0)).isNaN); Expect.isTrue((-1.remainder(-0.0)).isNaN); Expect.isTrue((0.remainder(0.0)).isNaN); Expect.isTrue((0.remainder(-0.0)).isNaN); Expect.isTrue((0x1000000000000000.remainder(0.0)).isNaN); Expect.isTrue(((-0x1000000000000000).remainder(0.0)).isNaN); Expect.isTrue((1.remainder(double.nan)).isNaN); Expect.isTrue((0x1000000000000000.remainder(double.nan)).isNaN); Expect.isTrue(((-0x1000000000000000).remainder(double.nan)).isNaN); } void check(num ex, int a, double b) { Expect.equals(ex, a.remainder(b)); Expect.isTrue((a.remainder(b)) is double); }