clean(1)

NAME
clean - cleans matrices (round to zero small entries)

CALLING SEQUENCE
[B]=clean(A [,epsa [,epsr]])

PARAMETERS

A   : a numerical matrix (scalar, polynomial...)

epsa,epsr
    : real numbers (default values resp. 1.d-10 and 1.d-10)

DESCRIPTION
This function eliminates (i.e. set to zero) all the coefficients with absolute value < epsa and relative value < epsr (relative means relative w.r.t. 1-norm of coefficients) in a polynomial (possibly matrix polynomial or rational matrix).

Default values are epsa=1.d-10 and epsr=1.d-10;

For a constant (non polynomial) matrix clean(A,epsa) sets to zero all entries of A smaller than epsa.

AUTHOR
F.D.