NX Nastran DMAP Programmer's Guide - Kxcad.net

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NORM
Normalize a matrix
NORM Normalize a matrix
To normalize a matrix, each column by its largest element or compute the square root
of the sum of the squares for each row of a matrix (SRSS).
Format:
NORM A/ANORM/S,N,NCOL/S,N,NROW/S,N,XNORM/IOPT/
S,N,XNORMD/PRTSWM $
Input Data Block:
A Any matrix (real or complex).
Output Data Block:
ANORM Normalized matrix.
Parameters:
NCOL Number of columns in A.
NROW Integer-output-default=0. Number of rows in A.
XNORM Real-output-default=0.0. Maximum absolute normalizing value over all
columns.
IOPT Integer-input-default=1. Normalization option.
1 Normalize by largest element
2 Compute SRSS
XNORMD Real double precision-output-default=0.D0. Same as XNORM except in
double precision.
PRTSWM Logical-input-default=TRUE. If PRTSUM=FALSE, System Warning
Message 6991 is suppressed. This message is printed when the
maximum term exceeds the single precision limit for the machine type.
When it is TRUE the message is printed.
Remarks:
1. If IOPT=1 then ANORM is the same as A except each column has been
normalized by its maximum absolute value.
2. If IOPT=2 then ANORM is a column vector where the i-th row is the sum of the
magnitudes of the terms in the i-th row of A.