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;