pbdDMAT (version 0.5-1)

condnums: Compute or estimate the Condition Number of a Distributed Matrix

Description

Computes or estimates the condition number.

Usage

# S3 method for ddmatrix
kappa(z, exact = FALSE, norm = NULL,
  method = c("qr", "direct"), ...)
# S4 method for ddmatrix
rcond(x, norm = c("O", "I", "1"),
  triangular = FALSE, ...)

Arguments

exact

logical. Determines whether exact condition number or approximation should be computed.

norm

character. Determines which matrix norm is to be used.

method

character. Determines the method use in computing condition number.

...

Extra arguments.

x, z

numeric distributed matrices.

triangular

logical. If true, only the lower triangle is used.

Value

Returns a number.