Unix/Linux Go Back    


CentOS 7.0 - man page for clanhe (centos section 3)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


clanhe.f(3)				      LAPACK				      clanhe.f(3)

NAME
       clanhe.f -

SYNOPSIS
   Functions/Subroutines
       REAL function clanhe (NORM, UPLO, N, A, LDA, WORK)
	   CLANHE returns the value of the 1-norm, or the Frobenius norm, or the infinity norm,
	   or the element of largest absolute value of a complex Hermitian matrix.

Function/Subroutine Documentation
   REAL function clanhe (characterNORM, characterUPLO, integerN, complex, dimension( lda, * )A,
       integerLDA, real, dimension( * )WORK)
       CLANHE returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or
       the element of largest absolute value of a complex Hermitian matrix.

       Purpose:

	    CLANHE  returns the value of the one norm,	or the Frobenius norm, or
	    the  infinity norm,  or the  element of  largest absolute value  of a
	    complex hermitian matrix A.

       Returns:
	   CLANHE

	       CLANHE = ( max(abs(A(i,j))), NORM = 'M' or 'm'
			(
			( norm1(A),	    NORM = '1', 'O' or 'o'
			(
			( normI(A),	    NORM = 'I' or 'i'
			(
			( normF(A),	    NORM = 'F', 'f', 'E' or 'e'

	    where  norm1  denotes the  one norm of a matrix (maximum column sum),
	    normI  denotes the	infinity norm  of a matrix  (maximum row sum) and
	    normF  denotes the	Frobenius norm of a matrix (square root of sum of
	    squares).  Note that  max(abs(A(i,j)))  is not a consistent matrix norm.

       Parameters:
	   NORM

		     NORM is CHARACTER*1
		     Specifies the value to be returned in CLANHE as described
		     above.

	   UPLO

		     UPLO is CHARACTER*1
		     Specifies whether the upper or lower triangular part of the
		     hermitian matrix A is to be referenced.
		     = 'U':  Upper triangular part of A is referenced
		     = 'L':  Lower triangular part of A is referenced

	   N

		     N is INTEGER
		     The order of the matrix A.  N >= 0.  When N = 0, CLANHE is
		     set to zero.

	   A

		     A is COMPLEX array, dimension (LDA,N)
		     The hermitian matrix A.  If UPLO = 'U', the leading n by n
		     upper triangular part of A contains the upper triangular part
		     of the matrix A, and the strictly lower triangular part of A
		     is not referenced.  If UPLO = 'L', the leading n by n lower
		     triangular part of A contains the lower triangular part of
		     the matrix A, and the strictly upper triangular part of A is
		     not referenced. Note that the imaginary parts of the diagonal
		     elements need not be set and are assumed to be zero.

	   LDA

		     LDA is INTEGER
		     The leading dimension of the array A.  LDA >= max(N,1).

	   WORK

		     WORK is REAL array, dimension (MAX(1,LWORK)),
		     where LWORK >= N when NORM = 'I' or '1' or 'O'; otherwise,
		     WORK is not referenced.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 125 of file clanhe.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2				 Tue Sep 25 2012			      clanhe.f(3)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 05:38 AM.