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// Copyright (c) 2013, 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.
//
// Dart test program for testing math's pow.
library pow_test;
import "package:expect/expect.dart";
import 'dart:math';
var expectedResults =
[
1,
2,
4,
8,
16,
32,
64,
128,
256,
512,
1024,
2048,
4096,
8192,
16384,
32768,
65536,
131072,
262144,
524288,
1048576,
2097152,
4194304,
8388608,
16777216,
33554432,
67108864,
134217728,
268435456,
536870912,
1073741824,
2147483648,
4294967296,
8589934592,
17179869184,
34359738368,
68719476736,
137438953472,
274877906944,
549755813888,
1099511627776,
2199023255552,
4398046511104,
8796093022208,
17592186044416,
35184372088832,
70368744177664,
140737488355328,
281474976710656,
562949953421312,
1125899906842624,
2251799813685248,
4503599627370496,
9007199254740992,
18014398509481984,
36028797018963968,
72057594037927936,
144115188075855872,
288230376151711744,
576460752303423488,
1152921504606846976,
2305843009213693952,
4611686018427387904,
9223372036854775808,
18446744073709551616,
36893488147419103232,
73786976294838206464,
147573952589676412928
];
void main() {
int exp = 0;
for (int val in expectedResults) {
Expect.equals(val, pow(2, exp));
Expect.equals(val.toDouble(), pow(2, exp.toDouble()));
exp++;
}
// Optimize it.
for (int i = 0; i < 8888; i++) {
pow(2, 3);
pow(2.0, 3.0);
}
exp = 0;
for (int val in expectedResults) {
Expect.equals(val, pow(2, exp));
Expect.equals(val.toDouble(), pow(2, exp.toDouble()));
exp++;
}
// Test Bigints.
Expect.equals(5559917313492231481, pow(11, 18));
Expect.equals(672749994932560009201, pow(11, 20));
}