PHP expm1()Functions
Examples
Return exp() - 1:
<?php
echo(expm1(0) . "<br>");
echo(expm1(1) . "<br>");
echo(expm1(10) . "<br>");
echo(expm1(4.8));
?>
echo(expm1(0) . "<br>");
echo(expm1(1) . "<br>");
echo(expm1(10) . "<br>");
echo(expm1(4.8));
?>
Run example »
Definition and Usage
The expm1() function returnsexp(x) - 1。
Syntax
expm1(x);
| Parameters | Description |
|---|---|
| x | Required. Specifies the exponent. |
Technical Details
| Return value: | 'e' to thexpower minus 1. |
|---|---|
| Return type: | Float |
| PHP Version: | 4.1+ |
| PHP Changelog: | PHP 5.3: The expm1() function is available on all platforms. |
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