brobmat: Brobdingnagian matrices

In RobinHankin/Brobdingnag: Very Large Numbers in R

Brobdingnagian matrices

Description

Basic matrix arithmetic for Brobdingnagian numbers. Matrix addition, multiplication extraction and replacement implemented but not the determinant or matrix inverse.

Usage

brobmat(..., positive)
newbrobmat(x,positive)
as.brobmat(x)
is.brobmat(x)
brobmat_to_brob(x)
diag(x,...)
## S3 method for class 'brobmat'
print(x,...)
t(x,...)

Arguments

x	Argument
...	Further arguments
positive	Logical, indicating whether an element is positive

Details

Basic arithmetic for Brobdingnagian matrices.

To create a Brobdingnagian matrix, use as.brobmat(); function brobmat() can be confusing.

Function brobmat() is like brob() in that it interprets its first argument as the exponent (but creates a matrix); the sign of the entry is given by Boolean argument positive. Note that brobmat() accepts a Brobdingnagian vector as primary argument, and in this case the sign is respected.

Function as.brobmat() coerces a numeric matrix to a brobmat.

Value

Generally return a brobmat or brob.

Author(s)

Robin K. S. Hankin

Examples

(M <- brobmat(-10:19,5,6))
all(M > 0)  # should be TRUE (sic)

as.brobmat(matrix(-10:19,5,6))

RobinHankin/Brobdingnag documentation built on Sept. 24, 2024, 11:44 a.m.