deformula.zeroinf {deformula} R Documentation

## Integration of one-dimensitonal functions over infinite iterval with the double exponential formula.

### Description

Numerical quadrature of functions of one variable over [0, infinity) with the double exponential formula.

### Usage

deformula.zeroinf(f, ...,
zero.eps = 1.0e-12, rel.tol = 1.0e-8,
start.divisions = 8, max.iter = 12)


### Arguments

 f an R function taking a numeric first argument. ... additional arguments to be passed to ‘f’. zero.eps a threshold value to be zero. rel.tol relative accuracy requested. start.divisions the initial number of subintervals. max.iter an integer for the maximum number of iterations to increase subintervals.

### Value

returns a list with components;

 value an value for integral. x a vector of subintervals. w a vector of weights. t a vector of subintervals for trapezoid integral. h a value of subinterval. message OK or a string for the error message.

deformula.moneone