
NAMEzlanht.f SYNOPSISFunctions/SubroutinesDOUBLE PRECISION function zlanht (NORM, N, D, E) Function/Subroutine DocumentationDOUBLE PRECISION function zlanht (characterNORM, integerN, double precision, dimension( * )D, complex*16, dimension( * )E)ZLANHT returns the value of the 1norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a complex Hermitian tridiagonal matrix. Purpose:ZLANHT 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 tridiagonal matrix A. ZLANHT
Parameters:
ZLANHT = ( 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. NORM
Author:
NORM is CHARACTER*1 Specifies the value to be returned in ZLANHT as described above.N N is INTEGER The order of the matrix A. N >= 0. When N = 0, ZLANHT is set to zero.D D is DOUBLE PRECISION array, dimension (N) The diagonal elements of A.E E is COMPLEX*16 array, dimension (N1) The (n1) subdiagonal or superdiagonal elements of A. Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 102 of file zlanht.f.
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