.TH "SRC/zla_gbrcond_x.f" 3 "Version 3.12.0" "LAPACK" \" -*- nroff -*-
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.SH NAME
SRC/zla_gbrcond_x.f
.SH SYNOPSIS
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.SS "Functions/Subroutines"

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.ti -1c
.RI "double precision function \fBzla_gbrcond_x\fP (trans, n, kl, ku, ab, ldab, afb, ldafb, ipiv, x, info, work, rwork)"
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.RI "\fBZLA_GBRCOND_X\fP computes the infinity norm condition number of op(A)*diag(x) for general banded matrices\&. "
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "double precision function zla_gbrcond_x (character trans, integer n, integer kl, integer ku, complex*16, dimension( ldab, * ) ab, integer ldab, complex*16, dimension( ldafb, * ) afb, integer ldafb, integer, dimension( * ) ipiv, complex*16, dimension( * ) x, integer info, complex*16, dimension( * ) work, double precision, dimension( * ) rwork)"

.PP
\fBZLA_GBRCOND_X\fP computes the infinity norm condition number of op(A)*diag(x) for general banded matrices\&.  
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\fBPurpose:\fP
.RS 4

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.nf
    ZLA_GBRCOND_X Computes the infinity norm condition number of
    op(A) * diag(X) where X is a COMPLEX*16 vector\&.
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.RE
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\fBParameters\fP
.RS 4
\fITRANS\fP 
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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)
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\fIN\fP 
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          N is INTEGER
     The number of linear equations, i\&.e\&., the order of the
     matrix A\&.  N >= 0\&.
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\fIKL\fP 
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          KL is INTEGER
     The number of subdiagonals within the band of A\&.  KL >= 0\&.
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\fIKU\fP 
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          KU is INTEGER
     The number of superdiagonals within the band of A\&.  KU >= 0\&.
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\fIAB\fP 
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          AB is COMPLEX*16 array, dimension (LDAB,N)
     On entry, the matrix A in band storage, in rows 1 to KL+KU+1\&.
     The j-th column of A is stored in the j-th column of the
     array AB as follows:
     AB(KU+1+i-j,j) = A(i,j) for max(1,j-KU)<=i<=min(N,j+kl)
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\fILDAB\fP 
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          LDAB is INTEGER
     The leading dimension of the array AB\&.  LDAB >= KL+KU+1\&.
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\fIAFB\fP 
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          AFB is COMPLEX*16 array, dimension (LDAFB,N)
     Details of the LU factorization of the band matrix A, as
     computed by ZGBTRF\&.  U is stored as an upper triangular
     band matrix with KL+KU superdiagonals in rows 1 to KL+KU+1,
     and the multipliers used during the factorization are stored
     in rows KL+KU+2 to 2*KL+KU+1\&.
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\fILDAFB\fP 
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          LDAFB is INTEGER
     The leading dimension of the array AFB\&.  LDAFB >= 2*KL+KU+1\&.
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\fIIPIV\fP 
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          IPIV is INTEGER array, dimension (N)
     The pivot indices from the factorization A = P*L*U
     as computed by ZGBTRF; row i of the matrix was interchanged
     with row IPIV(i)\&.
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\fIX\fP 
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          X is COMPLEX*16 array, dimension (N)
     The vector X in the formula op(A) * diag(X)\&.
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\fIINFO\fP 
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          INFO is INTEGER
       = 0:  Successful exit\&.
     i > 0:  The ith argument is invalid\&.
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\fIWORK\fP 
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          WORK is COMPLEX*16 array, dimension (2*N)\&.
     Workspace\&.
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\fIRWORK\fP 
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          RWORK is DOUBLE PRECISION array, dimension (N)\&.
     Workspace\&.
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.RE
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\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
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Univ\&. of California Berkeley 
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Univ\&. of Colorado Denver 
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NAG Ltd\&. 
.RE
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Definition at line \fB152\fP of file \fBzla_gbrcond_x\&.f\fP\&.
.SH "Author"
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Generated automatically by Doxygen for LAPACK from the source code\&.