EXPM1(3) 1 EXPM1(3)
expm1 - Returns exp(number) - 1, computed in a way that is accurate even when the value of number is close to zero
SYNOPSIS
float expm1 (float $arg)
DESCRIPTION
expm1(3) returns the equivalent to 'exp($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.
PARAMETERS
o $arg
- The argument to process
RETURN VALUES
'e' to the power of $arg minus one
CHANGELOG
+--------+--------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+--------------------------------------------------+
| 5.3.0 | |
| | |
| | This function is now available on all platforms |
| | |
+--------+--------------------------------------------------+
SEE ALSO
log1p(3), exp(3).
PHP Documentation Group EXPM1(3)
