
NAMEzla_gercond_c.f SYNOPSISFunctions/SubroutinesDOUBLE PRECISION function zla_gercond_c (TRANS, N, A, LDA, AF, LDAF, IPIV, C, CAPPLY, INFO, WORK, RWORK) Function/Subroutine DocumentationDOUBLE PRECISION function zla_gercond_c (characterTRANS, integerN, complex*16, dimension( lda, * )A, integerLDA, complex*16, dimension( ldaf, * )AF, integerLDAF, integer, dimension( * )IPIV, double precision, dimension( * )C, logicalCAPPLY, integerINFO, complex*16, dimension( * )WORK, double precision, dimension( * )RWORK)ZLA_GERCOND_C computes the infinity norm condition number of op(A)*inv(diag(c)) for general matrices. Purpose:ZLA_GERCOND_C computes the infinity norm condition number of op(A) * inv(diag(C)) where C is a DOUBLE PRECISION vector. TRANS
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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)N N is INTEGER The number of linear equations, i.e., the order of the matrix A. N >= 0.A A is COMPLEX*16 array, dimension (LDA,N) On entry, the NbyN matrix ALDA 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).IPIV IPIV is INTEGER array, dimension (N) The pivot indices from the factorization A = P*L*U as computed by ZGETRF; row i of the matrix was interchanged with row IPIV(i).C C is DOUBLE PRECISION array, dimension (N) The vector C in the formula op(A) * inv(diag(C)).CAPPLY CAPPLY is LOGICAL If .TRUE. then access the vector C in the formula above.INFO INFO is INTEGER = 0: Successful exit. i > 0: The ith argument is invalid.WORK WORK is COMPLEX*16 array, dimension (2*N). Workspace.RWORK RWORK is DOUBLE PRECISION array, dimension (N). Workspace. Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 142 of file zla_gercond_c.f.
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