PHP atanh()Functions
Examples
Return the inverse hyperbolic tangent of different numbers:
<?php
echo(atanh(M_PI_4) . "<br>");
echo(atanh(0.50) . "<br>");
echo(atanh(-0.50) . "<br>");
echo(atanh(1) . "<br>");
echo(atanh(-1));
?>
echo(atanh(M_PI_4) . "<br>");
echo(atanh(0.50) . "<br>");
echo(atanh(-0.50) . "<br>");
echo(atanh(1) . "<br>");
echo(atanh(-1));
?>
Run example »
Definition and Usage
The atanh() function returns the inverse hyperbolic tangent of a number.
Syntax
atanh(number);
| Parameters | Description |
|---|---|
| number | Required. Specifies a number. |
Technical Details
| Return value: | numberthe inverse hyperbolic tangent of. |
|---|---|
| Return type: | Float |
| PHP Version: | 4.1+ |
| PHP Changelog: | PHP 5.3: The function is available on all platforms. |
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