<?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() : basic functionality ***\n";
$values = array(10, 10.3, 3950.5, 037, 0x5f, "10", "3950.5", "3.9505e3", "039", "0x5F", true, false, null);
// loop through each element of $values to check the behaviour of expm1()
$iterator = 1;
foreach ($values as $value) {
echo "\n-- Iteration {$iterator} --\n";
var_dump(expm1($value));
$iterator++;
}
?>
===Done===
echo cos(-2354) . " " . cos("foo") . " " . cos(0) . " " . cos(5) . cos(1.2345) . "\n";
echo "cosh\n";
echo cosh(-2354) . " " . cosh("foo") . " " . cosh(0) . " " . cosh(5) . cosh(1.2345) . "\n";
echo "decbin\n";
echo decbin(2354) . " " . decbin("foo") . " " . decbin(0) . " " . decbin("5") . decbin(1.2345) . "\n";
echo "dechex\n";
echo dechex("2354") . " " . dechex("foo") . " " . dechex(0) . " " . dechex(5) . dechex(1.2345) . "\n";
echo "decoct\n";
echo decoct(2354) . " " . decoct("foo") . " " . decoct(0) . " " . decoct(5) . decoct(1.2345) . "\n";
echo "deg2rad\n";
echo deg2rad(-2354) . " " . deg2rad("foo") . " " . deg2rad(0) . " " . deg2rad(5) . deg2rad(1.2345) . "\n";
echo "exp\n";
echo exp(-2354) . " " . exp("foo") . " " . exp(0) . " " . exp(5) . exp(1.2345) . "\n";
if (PHP_OS != 'WINNT') {
echo "expm1\n";
echo expm1(-2354) . " " . expm1("foo") . " " . expm1(0) . " " . expm1(5) . expm1(1.2345) . "\n";
}
echo "floor\n";
echo floor(-2354) . " " . floor("foo") . " " . floor(0) . " " . floor(5) . floor(1.2345) . "\n";
// in windows, php has this at 32767 for no good reason
if (PHP_OS != 'WINNT') {
echo getrandmax() . "\n";
if (100000 < getrandmax()) {
echo "getrandmax: Well, that's a start.\n";
} else {
echo "woops, getrandmax: " . getrandmax() . "\n";
}
}
echo "hexdec\n";
echo hexdec("-2354") . " " . hexdec("foo") . " " . hexdec(0) . " " . hexdec(5) . hexdec("1.2345") . "\n";
if (PHP_OS != 'WINNT') {
/**
* This method returns "e" raised to the power of this object's value minus by one.
*
* @access public
* @static
* @param IReal\Type $x the operand
* @return IDouble\Type the result
*/
public static function expm1(IReal\Type $x) : IDouble\Type
{
return IDouble\Type::box(expm1($x->unbox()));
}
/**
* @param float $x A number
* @return float The power of the Euler's constant with the given value minus 1 (e^x - 1)
*/
public function expm1($x)
{
return expm1($x);
}
/**
* @return $this
* @desc 返回 Ex - 1 的值。
*/
public function expm1()
{
$this->current = expm1($this->toDouble());
return $this;
}
* 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(0, 1, 12345, -2345, 10.5, -10.5, 123456.789, 0.00123456789, 0.5, NULL, null, true, false, TRUE, FALSE, "", '', array(), "abcxyz", 'abcxyz', $heredoc, array(), array(1, 2, 4), new classA(), @$undefined_var, @$unset_var, $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===
<?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() : error conditions ***\n"; echo "\n-- Testing expm1() function with less than expected no. of arguments --\n"; expm1(); echo "\n-- Testing expm1() function with more than expected no. of arguments --\n"; expm1(23, true); ?> ===Done===
var_dump(hexdec("that"));
var_dump(hexdec("a0"));
var_dump(octdec("77"));
var_dump(octdec(decoct(45)));
var_dump(base_convert("A37334", 16, 2));
VC(pow(2, 8), 256);
VC(pow(-1, 20), 1);
var_dump(pow(0, 0));
var_dump(is_int(pow(2, 32)));
VC(pow("2", "8"), 256);
VC(pow("-1", "20"), 1);
var_dump(pow("0", "0"));
var_dump(is_int(pow("2", "32")));
VC(exp(12), 162754.791419);
VC(exp(5.7), 298.86740096706);
VC(expm1(5.7), 297.8674);
var_dump(log10(10));
var_dump(log10(100));
VC(log1p(9), 2.302585092994);
VC(log1p(99), 4.6051701859881);
VC(log(8), 2.0794415416798);
var_dump(log(8, 2));
VC(cos(M_PI), -1);
VC(cosh(1.23), 1.8567610569853);
VC(sin(deg2rad(90)), 1);
VC(sinh(1.23), 1.5644684793044);
VC(tan(deg2rad(45)), 1);
VC(tanh(1.23), 0.84257932565893);
VC(acos(-1), M_PI);
VC(acosh(1.8567610569853), 1.23);
VC(asin(1), deg2rad(90));
<?php
define("MAX_64Bit", 9223372036854775807);
define("MAX_32Bit", 2147483647);
define("MIN_64Bit", -9223372036854775807 - 1);
define("MIN_32Bit", -2147483647 - 1);
$longVals = array(MAX_64Bit, MIN_64Bit, MAX_32Bit, MIN_32Bit, MAX_64Bit - MAX_32Bit, MIN_64Bit - MIN_32Bit, MAX_32Bit + 1, MIN_32Bit - 1, MAX_32Bit * 2, MAX_32Bit * 2 + 1, MAX_32Bit * 2 - 1, MAX_64Bit - 1, MAX_64Bit + 1, MIN_64Bit + 1, MIN_64Bit - 1);
foreach ($longVals as $longVal) {
echo "--- testing: {$longVal} ---\n";
var_dump(expm1($longVal));
}
?>
===DONE===