zla_gerpvgrw.f - Man Page
Synopsis
Functions/Subroutines
double precision function zla_gerpvgrw (N, NCOLS, A, LDA, AF, LDAF)
ZLA_GERPVGRW multiplies a square real matrix by a complex matrix.
Function/Subroutine Documentation
double precision function zla_gerpvgrw (integer N, integer NCOLS, complex*16, dimension( lda, * ) A, integer LDA, complex*16, dimension( ldaf, * ) AF, integer LDAF)
ZLA_GERPVGRW multiplies a square real matrix by a complex matrix.
Purpose:
ZLA_GERPVGRW computes the reciprocal pivot growth factor norm(A)/norm(U). The "max absolute element" norm is used. If this is much less than 1, the stability of the LU factorization of the (equilibrated) matrix A could be poor. This also means that the solution X, estimated condition numbers, and error bounds could be unreliable.
- Parameters:
N
N is INTEGER The number of linear equations, i.e., the order of the matrix A. N >= 0.
NCOLS
NCOLS is INTEGER The number of columns of the matrix A. NCOLS >= 0.
A
A is COMPLEX*16 array, dimension (LDA,N) On entry, the N-by-N matrix A.
LDA
LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
AF
AF is COMPLEX*16 array, dimension (LDAF,N) The factors L and U from the factorization A = P*L*U as computed by ZGETRF.
LDAF
LDAF is INTEGER The leading dimension of the array AF. LDAF >= max(1,N).
- Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
- Date:
June 2016
Definition at line 102 of file zla_gerpvgrw.f.
Author
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Referenced By
The man page zla_gerpvgrw(3) is an alias of zla_gerpvgrw.f(3).
Tue Nov 14 2017 Version 3.8.0 LAPACK