expm1

(PHP 4 >= 4.1.0, PHP 5)

expm1 --  Returns exp(number) - 1, computed in a way that is accurate even when the value of number is close to zero

Description

float expm1 ( float arg )

Warning

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

expm1() returns the equivalent to 'exp(arg) - 1' computed in a way that is accurate even if the value of arg is near zero, a case where 'exp (arg) - 1' would be inaccurate due to subtraction of two numbers that are nearly equal.

Note: This function is not implemented on Windows platforms.

Parameters

arg

The argument to process

Return Values

'e' to the power of arg minus one

See Also

log1p()
exp()


Follow phpf1 on Twitter




F1 Site Family
AJAX F1
HTML F1
Java F1
JavaScript F1
PHP F1

Total time: 0.0089