cla_gercond_c()

real function cla_gercond_c	(	character	TRANS,
		integer	N,
		complex, dimension( lda, * )	A,
		integer	LDA,
		complex, dimension( ldaf, * )	AF,
		integer	LDAF,
		integer, dimension( * )	IPIV,
		real, dimension( * )	C,
		logical	CAPPLY,
		integer	INFO,
		complex, dimension( * )	WORK,
		real, dimension( * )	RWORK
	)

CLA_GERCOND_C computes the infinity norm condition number of op(A)*inv(diag(c)) for general matrices.

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Purpose:

    CLA_GERCOND_C computes the infinity norm condition number of
    op(A) * inv(diag(C)) where C is a REAL vector.

Parameters

[in]	TRANS	TRANS is CHARACTER*1 Specifies the form of the system of equations: = 'N': A * X = B (No transpose) = 'T': A**T * X = B (Transpose) = 'C': A**H * X = B (Conjugate Transpose = Transpose)
[in]	N	N is INTEGER The number of linear equations, i.e., the order of the matrix A. N >= 0.
[in]	A	A is COMPLEX array, dimension (LDA,N) On entry, the N-by-N matrix A
[in]	LDA	LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
[in]	AF	AF is COMPLEX array, dimension (LDAF,N) The factors L and U from the factorization A = P*L*U as computed by CGETRF.
[in]	LDAF	LDAF is INTEGER The leading dimension of the array AF. LDAF >= max(1,N).
[in]	IPIV	IPIV is INTEGER array, dimension (N) The pivot indices from the factorization A = P*L*U as computed by CGETRF; row i of the matrix was interchanged with row IPIV(i).
[in]	C	C is REAL array, dimension (N) The vector C in the formula op(A) * inv(diag(C)).
[in]	CAPPLY	CAPPLY is LOGICAL If .TRUE. then access the vector C in the formula above.
[out]	INFO	INFO is INTEGER = 0: Successful exit. i > 0: The ith argument is invalid.
[out]	WORK	WORK is COMPLEX array, dimension (2*N). Workspace.
[out]	RWORK	RWORK is REAL array, dimension (N). Workspace.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.