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cla_porcond_c.f(3) | LAPACK | cla_porcond_c.f(3) |
NAME¶
cla_porcond_c.f -SYNOPSIS¶
Functions/Subroutines¶
REAL function cla_porcond_c (UPLO, N, A, LDA, AF, LDAF, C, CAPPLY, INFO, WORK, RWORK)
Function/Subroutine Documentation¶
REAL function cla_porcond_c (characterUPLO, integerN, complex, dimension( lda, * )A, integerLDA, complex, dimension( ldaf, * )AF, integerLDAF, real, dimension( * )C, logicalCAPPLY, integerINFO, complex, dimension( * )WORK, real, dimension( * )RWORK)¶
CLA_PORCOND_C Purpose:CLA_PORCOND_C Computes the infinity norm condition number of op(A) * inv(diag(C)) where C is a DOUBLE PRECISION vector
UPLO
N
A
LDA
AF
LDAF
C
CAPPLY
INFO
WORK
RWORK
Author:
UPLO is CHARACTER*1 = 'U': Upper triangle of A is stored; = 'L': Lower triangle of A is stored.
N is INTEGER The number of linear equations, i.e., the order of the matrix A. N >= 0.
A is COMPLEX array, dimension (LDA,N) On entry, the N-by-N matrix A
LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
AF is COMPLEX array, dimension (LDAF,N) The triangular factor U or L from the Cholesky factorization A = U**H*U or A = L*L**H, as computed by CPOTRF.
LDAF is INTEGER The leading dimension of the array AF. LDAF >= max(1,N).
C is REAL array, dimension (N) The vector C in the formula op(A) * inv(diag(C)).
CAPPLY is LOGICAL If .TRUE. then access the vector C in the formula above.
INFO is INTEGER = 0: Successful exit. i > 0: The ith argument is invalid.
WORK is COMPLEX array, dimension (2*N). Workspace.
RWORK is REAL array, dimension (N). Workspace.
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Author¶
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