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ext/standard: Add more tests to round() (#13399)
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‎ext/standard/tests/math/round_gh12143_expand-rounding-target.phpt

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--TEST--
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Feature GH-12143: Extend the maximum precision round can handle by one digit
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--INI--
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serialize_precisiion=17
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--FILE--
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<?php
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$testCases = [
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'PHP_ROUND_HALF_UP' => [
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[0.12345678901234565, 16],
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[-0.12345678901234565, 16],
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[12345678901234565, -1],
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[-12345678901234565, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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'PHP_ROUND_HALF_DOWN' => [
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[0.12345678901234565, 16],
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[-0.12345678901234565, 16],
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[12345678901234565, -1],
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[-12345678901234565, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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'PHP_ROUND_HALF_EVEN' => [
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[0.12345678901234565, 16],
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[-0.12345678901234565, 16],
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[12345678901234565, -1],
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[-12345678901234565, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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'PHP_ROUND_HALF_ODD' => [
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[0.12345678901234565, 16],
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[-0.12345678901234565, 16],
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[12345678901234565, -1],
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[-12345678901234565, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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'PHP_ROUND_AWAY_FROM_ZERO' => [
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[0.12345678901234560, 16],
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[-0.12345678901234560, 16],
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[12345678901234567, -1],
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[-12345678901234567, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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'PHP_ROUND_TOWARD_ZERO' => [
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[0.12345678901234566, 16],
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[-0.12345678901234566, 16],
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[12345678901234565, -1],
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[-12345678901234565, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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'PHP_ROUND_CEILING' => [
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[0.12345678901234560, 16],
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[-0.12345678901234560, 16],
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[12345678901234564, -1],
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[-12345678901234564, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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'PHP_ROUND_FLOOR' => [
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[0.12345678901234560, 16],
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[-0.12345678901234560, 16],
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[12345678901234564, -1],
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[-12345678901234564, -1],
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[4503599627370495.5, 0],
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[-4503599627370495.5, 0],
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],
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];
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foreach ($testCases as $mode => $cases) {
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echo "========== {$mode} ==========\n";
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foreach ($cases as [$val, $precision]) {
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var_dump(round($val, $precision, constant($mode)));
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}
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echo "\n";
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}
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?>
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--EXPECT--
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========== PHP_ROUND_HALF_UP ==========
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float(0.12345678901234565)
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float(-0.12345678901234565)
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float(12345678901234564)
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float(-12345678901234564)
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float(4503599627370495.5)
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float(-4503599627370495.5)
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========== PHP_ROUND_HALF_DOWN ==========
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float(0.12345678901234565)
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float(-0.12345678901234565)
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float(12345678901234564)
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float(-12345678901234564)
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float(4503599627370495.5)
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float(-4503599627370495.5)
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========== PHP_ROUND_HALF_EVEN ==========
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float(0.12345678901234565)
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float(-0.12345678901234565)
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float(12345678901234564)
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float(-12345678901234564)
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float(4503599627370495.5)
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float(-4503599627370495.5)
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========== PHP_ROUND_HALF_ODD ==========
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float(0.12345678901234565)
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float(-0.12345678901234565)
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float(12345678901234564)
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float(-12345678901234564)
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float(4503599627370495.5)
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float(-4503599627370495.5)
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========== PHP_ROUND_AWAY_FROM_ZERO ==========
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float(0.1234567890123456)
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float(-0.1234567890123456)
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float(12345678901234568)
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float(-12345678901234568)
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float(4503599627370495.5)
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float(-4503599627370495.5)
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========== PHP_ROUND_TOWARD_ZERO ==========
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float(0.12345678901234566)
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float(-0.12345678901234566)
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float(12345678901234564)
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float(-12345678901234564)
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float(4503599627370495.5)
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float(-4503599627370495.5)
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========== PHP_ROUND_CEILING ==========
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float(0.1234567890123456)
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float(-0.1234567890123456)
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float(12345678901234564)
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float(-12345678901234564)
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float(4503599627370495.5)
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float(-4503599627370495.5)
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========== PHP_ROUND_FLOOR ==========
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float(0.1234567890123456)
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float(-0.1234567890123456)
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float(12345678901234564)
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float(-12345678901234564)
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float(4503599627370495.5)
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float(-4503599627370495.5)

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