NUMAL Section 1.2.8
BEGIN SECTION : 1.2.8 (December, 1975)
AUTHOR : C.G. VAN DER LAAN.
CONTRIBUTORS : H.FIOLET, C.G. VAN DER LAAN.
INSTITUTE: MATHEMATICAL CENTRE.
RECEIVED: 731016.
BRIEF DESCRIPTION:
COMEUCNRM CALCULATES THE EUCLIDEAN NORM OF A COMPLEX MATRIX
WITH LW LOWER CODIAGONALS.
KEYWORDS:
EUCLIDEAN NORM,
COMPLEX MATRIX.
CALLING SEQUENCE:
THE HEADING OF THE PROCEDURE READS:
"REAL" "PROCEDURE" COMEUCNRM(AR, AI, LW, N); "VALUE" N, LW;
"INTEGER" N, LW; "ARRAY" AR, AI;
"CODE" 34359;
COMEUCNRM DELIVERS THE EUCLIDEAN NORM OF A COMPLEX MATRIX WITH LW
LOWER CODIAGONALS;
THE MEANING OF THE FORMAL PARAMETERS IS:
N: <ARITHMETIC EXPRESSION>;
THE ORDER OF THE MATRIX;
LW: <ARITHMETIC EXPRESSION>;
THE NUMBER OF LOWER CODIAGONALS;
AR,AI: <ARRAY IDENTIFIER>;
"ARRAY" AR,AI[1:N,1:N];
ENTRY:
THE REAL PART AND THE IMAGINARY PART OF THE COMPLEX
MATRIX,WITH LW LOWER CODIAGONALS,MUST BE GIVEN IN THE
ARRAYS AR AND AI,RESPECTIVELY.
PROCEDURES USED: MATTAM = CP34015.
RUNNING TIME: PROPORTIONAL TO N**2.
LANGUAGE: ALGOL 60.
EXAMPLE OF USE:SEE EIGVALCOM OR EIGCOM (SECTION 3.3.2.2.2).
SOURCE TEXT(S) :
"CODE" 34359;