Macaulay2 » Documentation
Packages » RInterface » RObject » expm1(RObject)

next | previous | forward | backward | up | index | toc

expm1(RObject) -- exponential minus 1 of an R object

Function: expm1
Usage:

expm1 x
Inputs:
- x, a R object,
Outputs:
- a R object, the element-wise value of e^x - 1;

Description

Compute e^x - 1 for each element of an R numeric vector, calling R's expm1. This is more accurate than exp(x) - 1 for small values of x.

i1 : expm1 RObject 0.001

o1 = [1] 0.0010005

o1 : RObject of type double

See also

exp(RObject) -- exponential of an R object
log1p(RObject) -- natural logarithm of 1 plus an R object

Ways to use this method:

expm1(RObject) -- exponential minus 1 of an R object

The source of this document is in RInterface/doc/exp-log.m2:95:0.