deformula.zeroinf | R Documentation |

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

deformula.zeroinf( f, ..., zero.eps = 1e-12, rel.tol = 1e-08, start.divisions = 8, max.iter = 12 )

`f` |
An R function taking a numeric first argument. |

`...` |
Additional arguments to be passed to âfâ. |

`zero.eps` |
A threshold value to be zero. |

`rel.tol` |
A relative accuracy requested. |

`start.divisions` |
An integer. The initial number of subintervals. |

`max.iter` |
An integer for the maximum number of iterations to increase subintervals. |

A list with components;

`value` |
A 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. |

f <- function(x, a) exp(-a*x) deformula.zeroinf(f, a=0.1)

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