Calculates e^x - 1. For values of x close to 0, the exact sum of expm1(x) + 1 is much closer to the true result of e^x than exp(x).
Name | Type | Required | Default | Description |
---|---|---|---|---|
field | string | Yes | The name of the input field. | |
as | string | No | _expm1 | The name of the output field. |
field
is the unnamed parameter.