Return exp() - 1:
The expm1() function returns exp(x) - 1.
Parameter | Description |
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x | Required. Specifies the exponent |
Return Value: | 'e' raised to the power of x minus 1 |
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Return Type: | Float |
PHP Version: | 4.1+ |
PHP Changelog: | PHP 5.3: expm1() now available on all platforms |