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79 lines
1.1 KiB
PHP
79 lines
1.1 KiB
PHP
--TEST--
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Test log1p() - basic function test log1p()
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--INI--
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precision=14
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--FILE--
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<?php
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/* Prototype : float log1p ( float $arg )
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* Description: Returns log(1 + number), computed in a way that is accurate even
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* when the value of number is close to zero
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* Source code: ext/standard/math.c
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*/
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echo "*** Testing log1p() : basic functionality ***\n";
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$values = array(23,
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-23,
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2.345e1,
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-2.345e1,
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0x17,
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027,
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"23",
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"23.45",
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"2.345e1",
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null,
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true,
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false);
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echo "\n LOG1p tests\n";
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foreach($values as $value) {
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echo "\n-- log1p $value --\n";
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var_dump(log1p($value));
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};
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?>
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===Done===
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--EXPECTF--
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*** Testing log1p() : basic functionality ***
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LOG1p tests
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-- log1p 23 --
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float(3.1780538303479)
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-- log1p -23 --
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float(NAN)
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-- log1p 23.45 --
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float(3.1966302159209)
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-- log1p -23.45 --
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float(NAN)
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-- log1p 23 --
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float(3.1780538303479)
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-- log1p 23 --
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float(3.1780538303479)
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-- log1p 23 --
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float(3.1780538303479)
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-- log1p 23.45 --
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float(3.1966302159209)
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-- log1p 2.345e1 --
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float(3.1966302159209)
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-- log1p --
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float(0)
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-- log1p 1 --
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float(0.69314718055995)
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-- log1p --
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float(0)
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===Done===
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