--TEST--
Test expm1() function : usage variations - different data types as $arg argument
--INI--
precision=14
--FILE--
<?php
/* Prototype : float expm1 ( float $arg )
* Description: Returns exp(number) - 1, computed in a way that is accurate even
* when the value of number is close to zero.
* Source code: ext/standard/math.c
*/
echo "*** Testing expm1() : usage variations ***\n";
//get an unset variable
$unset_var = 10;
unset ($unset_var);
// heredoc string
$heredoc = <<<EOT
abc
xyz
EOT;
// get a class
class classA
{
}
// get a resource variable
$fp = fopen(__FILE__, "r");
// unexpected values to be passed to $arg argument
$inputs = array(
// int data
/*1*/ 0,
1,
12345,
-2345,
// float data
/*5*/ 10.5,
-10.5,
12.3456789E4,
12.3456789E-4,
.5,
// null data
/*10*/ NULL,
null,
// boolean data
/*12*/ true,
false,
TRUE,
FALSE,
// empty data
/*16*/ "",
'',
array(),
// string data
/*19*/ "abcxyz",
'abcxyz',
$heredoc,
// array data
array(),
array(1,2,4),
// object data
/*24*/ new classA(),
// undefined data
/*25*/ @$undefined_var,
// unset data
/*26*/ @$unset_var,
// resource variable
/*27*/ $fp
);
// loop through each element of $inputs to check the behaviour of expm1()
$iterator = 1;
foreach($inputs as $input) {
echo "\n-- Iteration $iterator --\n";
var_dump(expm1($input));
$iterator++;
};
fclose($fp);
?>
===Done===
--EXPECTF--
*** Testing expm1() : usage variations ***
-- Iteration 1 --
float(0)
-- Iteration 2 --
float(1.718281828459)
-- Iteration 3 --
float(INF)
-- Iteration 4 --
float(-1)
-- Iteration 5 --
float(36314.502674247)
-- Iteration 6 --
float(-0.99997246355065)
-- Iteration 7 --
float(INF)
-- Iteration 8 --
float(0.0012353302826471)
-- Iteration 9 --
float(0.64872127070013)
-- Iteration 10 --
float(0)
-- Iteration 11 --
float(0)
-- Iteration 12 --
float(1.718281828459)
-- Iteration 13 --
float(0)
-- Iteration 14 --
float(1.718281828459)
-- Iteration 15 --
float(0)
-- Iteration 16 --
Warning: expm1() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 17 --
Warning: expm1() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 18 --
Warning: expm1() expects parameter 1 to be float, array given in %s on line %d
NULL
-- Iteration 19 --
Warning: expm1() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 20 --
Warning: expm1() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 21 --
Warning: expm1() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 22 --
Warning: expm1() expects parameter 1 to be float, array given in %s on line %d
NULL
-- Iteration 23 --
Warning: expm1() expects parameter 1 to be float, array given in %s on line %d
NULL
-- Iteration 24 --
Warning: expm1() expects parameter 1 to be float, object given in %s on line %d
NULL
-- Iteration 25 --
float(0)
-- Iteration 26 --
float(0)
-- Iteration 27 --
Warning: expm1() expects parameter 1 to be float, resource given in %s on line %d
NULL
===Done===
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