R: Allocate vectors in .C64()

vector_dc {dotCall64}

R Documentation

Allocate vectors in .C64()

Description

Helper functions to be used in calls to .C64. The function vector_dc and its shortcuts numeric_dc and integer_dc return a R object of class c("vector_dc", "list") containing the necessary information (type and length) to allocate the vector (initialized with 0) inside the call to .C64. Using vector_dc together with INTENT = "w" argument of .C64 leads to performance gains by avoiding unnecessary castings and copies.

Usage

vector_dc(mode = "logical", length = 0L)

numeric_dc(length = 0)

integer_dc(length = 0)

Arguments

`mode`	Character vector of length 1. Storage mode of the vector to allocate.
`length`	Numeric vector of length 1. Length of the vector to allocate.

Value

Object of class vector_dc and list.

Examples

vector_dc("integer", 20)

[Package dotCall64 version 0.9-04 Index]