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ru_php/ext/standard/tests/math/fpow.phpt

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--TEST--
fpow() function
--FILE--
<?php
$numbers = [
0,
1,
-1,
1.0,
-1.0,
2,
-2,
2.1,
-2.1,
0.1,
-0.1,
0.0,
-0.0,
10,
-10,
INF,
-INF,
NAN,
];
function safe_to_string(int|float $number): string {
if (is_nan($number)) {
return 'NAN';
}
return $number;
}
foreach ($numbers as $base) {
foreach ($numbers as $exp) {
echo str_pad(safe_to_string($base), 4, " ", STR_PAD_LEFT),
" ** ",
str_pad(safe_to_string($exp), 4),
" = ",
safe_to_string(fpow($base, $exp)),
PHP_EOL;
}
}
?>
--EXPECT--
0 ** 0 = 1
0 ** 1 = 0
0 ** -1 = INF
0 ** 1 = 0
0 ** -1 = INF
0 ** 2 = 0
0 ** -2 = INF
0 ** 2.1 = 0
0 ** -2.1 = INF
0 ** 0.1 = 0
0 ** -0.1 = INF
0 ** 0 = 1
0 ** -0 = 1
0 ** 10 = 0
0 ** -10 = INF
0 ** INF = 0
0 ** -INF = INF
0 ** NAN = NAN
1 ** 0 = 1
1 ** 1 = 1
1 ** -1 = 1
1 ** 1 = 1
1 ** -1 = 1
1 ** 2 = 1
1 ** -2 = 1
1 ** 2.1 = 1
1 ** -2.1 = 1
1 ** 0.1 = 1
1 ** -0.1 = 1
1 ** 0 = 1
1 ** -0 = 1
1 ** 10 = 1
1 ** -10 = 1
1 ** INF = 1
1 ** -INF = 1
1 ** NAN = 1
-1 ** 0 = 1
-1 ** 1 = -1
-1 ** -1 = -1
-1 ** 1 = -1
-1 ** -1 = -1
-1 ** 2 = 1
-1 ** -2 = 1
-1 ** 2.1 = NAN
-1 ** -2.1 = NAN
-1 ** 0.1 = NAN
-1 ** -0.1 = NAN
-1 ** 0 = 1
-1 ** -0 = 1
-1 ** 10 = 1
-1 ** -10 = 1
-1 ** INF = 1
-1 ** -INF = 1
-1 ** NAN = NAN
1 ** 0 = 1
1 ** 1 = 1
1 ** -1 = 1
1 ** 1 = 1
1 ** -1 = 1
1 ** 2 = 1
1 ** -2 = 1
1 ** 2.1 = 1
1 ** -2.1 = 1
1 ** 0.1 = 1
1 ** -0.1 = 1
1 ** 0 = 1
1 ** -0 = 1
1 ** 10 = 1
1 ** -10 = 1
1 ** INF = 1
1 ** -INF = 1
1 ** NAN = 1
-1 ** 0 = 1
-1 ** 1 = -1
-1 ** -1 = -1
-1 ** 1 = -1
-1 ** -1 = -1
-1 ** 2 = 1
-1 ** -2 = 1
-1 ** 2.1 = NAN
-1 ** -2.1 = NAN
-1 ** 0.1 = NAN
-1 ** -0.1 = NAN
-1 ** 0 = 1
-1 ** -0 = 1
-1 ** 10 = 1
-1 ** -10 = 1
-1 ** INF = 1
-1 ** -INF = 1
-1 ** NAN = NAN
2 ** 0 = 1
2 ** 1 = 2
2 ** -1 = 0.5
2 ** 1 = 2
2 ** -1 = 0.5
2 ** 2 = 4
2 ** -2 = 0.25
2 ** 2.1 = 4.2870938501452
2 ** -2.1 = 0.2332582478842
2 ** 0.1 = 1.0717734625363
2 ** -0.1 = 0.93303299153681
2 ** 0 = 1
2 ** -0 = 1
2 ** 10 = 1024
2 ** -10 = 0.0009765625
2 ** INF = INF
2 ** -INF = 0
2 ** NAN = NAN
-2 ** 0 = 1
-2 ** 1 = -2
-2 ** -1 = -0.5
-2 ** 1 = -2
-2 ** -1 = -0.5
-2 ** 2 = 4
-2 ** -2 = 0.25
-2 ** 2.1 = NAN
-2 ** -2.1 = NAN
-2 ** 0.1 = NAN
-2 ** -0.1 = NAN
-2 ** 0 = 1
-2 ** -0 = 1
-2 ** 10 = 1024
-2 ** -10 = 0.0009765625
-2 ** INF = INF
-2 ** -INF = 0
-2 ** NAN = NAN
2.1 ** 0 = 1
2.1 ** 1 = 2.1
2.1 ** -1 = 0.47619047619048
2.1 ** 1 = 2.1
2.1 ** -1 = 0.47619047619048
2.1 ** 2 = 4.41
2.1 ** -2 = 0.22675736961451
2.1 ** 2.1 = 4.7496380917422
2.1 ** -2.1 = 0.21054235726688
2.1 ** 0.1 = 1.0770154403044
2.1 ** -0.1 = 0.92849179554696
2.1 ** 0 = 1
2.1 ** -0 = 1
2.1 ** 10 = 1667.9880978201
2.1 ** -10 = 0.0005995246616609
2.1 ** INF = INF
2.1 ** -INF = 0
2.1 ** NAN = NAN
-2.1 ** 0 = 1
-2.1 ** 1 = -2.1
-2.1 ** -1 = -0.47619047619048
-2.1 ** 1 = -2.1
-2.1 ** -1 = -0.47619047619048
-2.1 ** 2 = 4.41
-2.1 ** -2 = 0.22675736961451
-2.1 ** 2.1 = NAN
-2.1 ** -2.1 = NAN
-2.1 ** 0.1 = NAN
-2.1 ** -0.1 = NAN
-2.1 ** 0 = 1
-2.1 ** -0 = 1
-2.1 ** 10 = 1667.9880978201
-2.1 ** -10 = 0.0005995246616609
-2.1 ** INF = INF
-2.1 ** -INF = 0
-2.1 ** NAN = NAN
0.1 ** 0 = 1
0.1 ** 1 = 0.1
0.1 ** -1 = 10
0.1 ** 1 = 0.1
0.1 ** -1 = 10
0.1 ** 2 = 0.01
0.1 ** -2 = 100
0.1 ** 2.1 = 0.0079432823472428
0.1 ** -2.1 = 125.89254117942
0.1 ** 0.1 = 0.79432823472428
0.1 ** -0.1 = 1.2589254117942
0.1 ** 0 = 1
0.1 ** -0 = 1
0.1 ** 10 = 1.0E-10
0.1 ** -10 = 10000000000
0.1 ** INF = 0
0.1 ** -INF = INF
0.1 ** NAN = NAN
-0.1 ** 0 = 1
-0.1 ** 1 = -0.1
-0.1 ** -1 = -10
-0.1 ** 1 = -0.1
-0.1 ** -1 = -10
-0.1 ** 2 = 0.01
-0.1 ** -2 = 100
-0.1 ** 2.1 = NAN
-0.1 ** -2.1 = NAN
-0.1 ** 0.1 = NAN
-0.1 ** -0.1 = NAN
-0.1 ** 0 = 1
-0.1 ** -0 = 1
-0.1 ** 10 = 1.0E-10
-0.1 ** -10 = 10000000000
-0.1 ** INF = 0
-0.1 ** -INF = INF
-0.1 ** NAN = NAN
0 ** 0 = 1
0 ** 1 = 0
0 ** -1 = INF
0 ** 1 = 0
0 ** -1 = INF
0 ** 2 = 0
0 ** -2 = INF
0 ** 2.1 = 0
0 ** -2.1 = INF
0 ** 0.1 = 0
0 ** -0.1 = INF
0 ** 0 = 1
0 ** -0 = 1
0 ** 10 = 0
0 ** -10 = INF
0 ** INF = 0
0 ** -INF = INF
0 ** NAN = NAN
-0 ** 0 = 1
-0 ** 1 = -0
-0 ** -1 = -INF
-0 ** 1 = -0
-0 ** -1 = -INF
-0 ** 2 = 0
-0 ** -2 = INF
-0 ** 2.1 = 0
-0 ** -2.1 = INF
-0 ** 0.1 = 0
-0 ** -0.1 = INF
-0 ** 0 = 1
-0 ** -0 = 1
-0 ** 10 = 0
-0 ** -10 = INF
-0 ** INF = 0
-0 ** -INF = INF
-0 ** NAN = NAN
10 ** 0 = 1
10 ** 1 = 10
10 ** -1 = 0.1
10 ** 1 = 10
10 ** -1 = 0.1
10 ** 2 = 100
10 ** -2 = 0.01
10 ** 2.1 = 125.89254117942
10 ** -2.1 = 0.0079432823472428
10 ** 0.1 = 1.2589254117942
10 ** -0.1 = 0.79432823472428
10 ** 0 = 1
10 ** -0 = 1
10 ** 10 = 10000000000
10 ** -10 = 1.0E-10
10 ** INF = INF
10 ** -INF = 0
10 ** NAN = NAN
-10 ** 0 = 1
-10 ** 1 = -10
-10 ** -1 = -0.1
-10 ** 1 = -10
-10 ** -1 = -0.1
-10 ** 2 = 100
-10 ** -2 = 0.01
-10 ** 2.1 = NAN
-10 ** -2.1 = NAN
-10 ** 0.1 = NAN
-10 ** -0.1 = NAN
-10 ** 0 = 1
-10 ** -0 = 1
-10 ** 10 = 10000000000
-10 ** -10 = 1.0E-10
-10 ** INF = INF
-10 ** -INF = 0
-10 ** NAN = NAN
INF ** 0 = 1
INF ** 1 = INF
INF ** -1 = 0
INF ** 1 = INF
INF ** -1 = 0
INF ** 2 = INF
INF ** -2 = 0
INF ** 2.1 = INF
INF ** -2.1 = 0
INF ** 0.1 = INF
INF ** -0.1 = 0
INF ** 0 = 1
INF ** -0 = 1
INF ** 10 = INF
INF ** -10 = 0
INF ** INF = INF
INF ** -INF = 0
INF ** NAN = NAN
-INF ** 0 = 1
-INF ** 1 = -INF
-INF ** -1 = -0
-INF ** 1 = -INF
-INF ** -1 = -0
-INF ** 2 = INF
-INF ** -2 = 0
-INF ** 2.1 = INF
-INF ** -2.1 = 0
-INF ** 0.1 = INF
-INF ** -0.1 = 0
-INF ** 0 = 1
-INF ** -0 = 1
-INF ** 10 = INF
-INF ** -10 = 0
-INF ** INF = INF
-INF ** -INF = 0
-INF ** NAN = NAN
NAN ** 0 = 1
NAN ** 1 = NAN
NAN ** -1 = NAN
NAN ** 1 = NAN
NAN ** -1 = NAN
NAN ** 2 = NAN
NAN ** -2 = NAN
NAN ** 2.1 = NAN
NAN ** -2.1 = NAN
NAN ** 0.1 = NAN
NAN ** -0.1 = NAN
NAN ** 0 = 1
NAN ** -0 = 1
NAN ** 10 = NAN
NAN ** -10 = NAN
NAN ** INF = NAN
NAN ** -INF = NAN
NAN ** NAN = NAN
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