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Added tests for pow()

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#The tests near LONG_MAX/MIN fail, I know that
This commit is contained in:
Jeroen van Wolffelaar
2001-08-04 13:20:31 +00:00
parent 8803bbaa80
commit 0cf60d749e
2 changed files with 155 additions and 0 deletions
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ext/standard/tests/math/pow.phpt Normal file
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--TEST--
Various pow() tests
--POST--
--GET--
--FILE--
<?php
define('LONG_MAX', is_int(5000000000)? 9223372036854775807 : 0x7FFFFFFF);
define('LONG_MIN', -LONG_MAX - 1);
printf("%d,%d,%d,%d\n",is_int(LONG_MIN ),is_int(LONG_MAX ),
is_int(LONG_MIN-1),is_int(LONG_MAX+1));
$tests = <<<TESTS
0.25 === pow(-2,-2)
-0.5 === pow(-2,-1)
1 === pow(-2, 0)
-2 === pow(-2, 1)
4 === pow(-2, 2)
1 === pow(-1,-2)
-1 === pow(-1,-1)
1 === pow(-1, 0)
-1 === pow(-1, 1)
1 === pow(-1, 2)
FALSE === pow( 0,-2)
FALSE === pow( 0,-1)
1 === pow( 0, 0)
0 === pow( 0, 1)
0 === pow( 0, 2)
1 === pow( 1,-2)
1 === pow( 1,-1)
1 === pow( 1, 0)
1 === pow( 1, 1)
1 === pow( 1, 2)
0.25 === pow( 2,-2)
0.5 === pow( 2,-1)
1 === pow( 2, 0)
2 === pow( 2, 1)
4 === pow( 2, 2)
FALSE === pow(-2,-2.0)
FALSE === pow(-2,-1.0)
FALSE === pow(-2, 0.0)
FALSE === pow(-2, 1.0)
FALSE === pow(-2, 2.0)
FALSE === pow(-1,-2.0)
FALSE === pow(-1,-1.0)
FALSE === pow(-1, 0.0)
FALSE === pow(-1, 1.0)
FALSE === pow(-1, 2.0)
FALSE === pow( 0,-2.0)
FALSE === pow( 0,-1.0)
FALSE === pow( 0, 0.0)
FALSE === pow( 0, 1.0)
FALSE === pow( 0, 2.0)
1.0 === pow( 1,-2.0)
1.0 === pow( 1,-1.0)
1.0 === pow( 1, 0.0)
1.0 === pow( 1, 1.0)
1.0 === pow( 1, 2.0)
0.25 === pow( 2,-2.0)
0.5 === pow( 2,-1.0)
1.0 === pow( 2, 0.0)
2.0 === pow( 2, 1.0)
4.0 === pow( 2, 2.0)
2147483648 === pow(2,31)
-2147483648 === pow(-2,31)
1000000000 === pow(10,9)
100000000 === pow(-10,8)
1 === pow(-1,1443279822)
-1 === pow(-1,1443279821)
sqrt(2) === pow(2,1/2)
FALSE === pow(-2.0,-2.0)
FALSE === pow(-2.0,-1.0)
FALSE === pow(-2.0, 0.0)
FALSE === pow(-2.0, 1.0)
FALSE === pow(-2.0, 2.0)
FALSE === pow(-1.0,-2.0)
FALSE === pow(-1.0,-1.0)
FALSE === pow(-1.0, 0.0)
FALSE === pow(-1.0, 1.0)
FALSE === pow(-1.0, 2.0)
FALSE === pow( 0.0,-2.0)
FALSE === pow( 0.0,-1.0)
FALSE === pow( 0.0, 0.0)
FALSE === pow( 0.0, 1.0)
FALSE === pow( 0.0, 2.0)
1.0 === pow( 1.0,-2.0)
1.0 === pow( 1.0,-1.0)
1.0 === pow( 1.0, 0.0)
1.0 === pow( 1.0, 1.0)
1.0 === pow( 1.0, 2.0)
0.25 === pow( 2.0,-2.0)
0.5 === pow( 2.0,-1.0)
1.0 === pow( 2.0, 0.0)
2.0 === pow( 2.0, 1.0)
4.0 === pow( 2.0, 2.0)
0.25 === pow(-2.0,-2)
-0.5 === pow(-2.0,-1)
1.0 === pow(-2.0, 0)
-2.0 === pow(-2.0, 1)
4.0 === pow(-2.0, 2)
1.0 === pow(-1.0,-2)
-1.0 === pow(-1.0,-1)
1.0 === pow(-1.0, 0)
-1.0 === pow(-1.0, 1)
1.0 === pow(-1.0, 2)
FALSE === pow( 0.0,-2)
FALSE === pow( 0.0,-1)
1.0 === pow( 0.0, 0)
0.0 === pow( 0.0, 1)
0.0 === pow( 0.0, 2)
1.0 === pow( 1.0,-2)
1.0 === pow( 1.0,-1)
1.0 === pow( 1.0, 0)
1.0 === pow( 1.0, 1)
1.0 === pow( 1.0, 2)
0.25 === pow( 2.0,-2)
0.5 === pow( 2.0,-1)
1.0 === pow( 2.0, 0)
2.0 === pow( 2.0, 1)
4.0 === pow( 2.0, 2)
LONG_MAX === pow(LONG_MAX,1);
LONG_MIN === pow(LONG_MIN,1);
LONG_MAX*LONG_MAX === pow(LONG_MAX,2);
LONG_MIN*LONG_MIN === pow(LONG_MIN,2);
(float)LONG_MAX === pow(LONG_MAX,1.0);
FALSE === pow(LONG_MIN,1.0);
LONG_MAX*LONG_MAX === pow(LONG_MAX,2.0);
FALSE === pow(LONG_MIN,2.0);
TESTS;
echo "On failure, please mail result to jeroen@php.net\n";
include('test_eval.inc');
--EXPECT--
1,1,0,0
On failure, please contact jeroen@php.net
OK

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ext/standard/tests/math/test_eval.inc Normal file
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<?php
error_reporting(0);
$tests = explode("\n",$tests);
$success = TRUE;
foreach ($tests as $test)
{
$res = eval("return ($test);");
$success = $success && $res;
if (!$res)
{
echo "\nAssert failed:\n";
echo "$test\n";
list($left,$right) = explode('===',$test);
echo "Left: ";var_dump(eval("return ($left );"));
echo "Right: ";var_dump(eval("return ($right);"));
}
}
if ($success) echo "OK";