dla_gbrcond man page on Scientific

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DLA_GBRCONDLAPACK routine (version 3.2)				DLA_GBRCOND(1)

NAME
       DLA_GBRCOND  - DLA_GERCOND Estimate the Skeel condition number of op(A)
       * op2(C)	 where op2 is determined by CMODE as follows  CMODE = 1 op2(C)
       = C  CMODE = 0 op2(C) = I  CMODE = -1 op2(C) = inv(C)  The Skeel condiā€
       tion number cond(A) = norminf( |inv(A)||A| )  is computed by  computing
       scaling	factors	 R such that  diag(R)*A*op2(C) is row equilibrated and
       computing the standard  infinity-norm condition number

SYNOPSIS
       DOUBLE PRECISION FUNCTION DLA_GBRCOND( TRANS, N, KL, KU, AB, LDAB, AFB,
			LDAFB, IPIV, CMODE, C, INFO, WORK, IWORK )

	   IMPLICIT	NONE

	   CHARACTER	TRANS

	   INTEGER	N, LDAB, LDAFB, INFO, KL, KU, CMODE

	   INTEGER	IWORK( * ), IPIV( * )

	   DOUBLE	PRECISION  AB(	LDAB, * ), AFB( LDAFB, * ), WORK( * ),
			C( * )

PURPOSE
	  DLA_GERCOND Estimates the Skeel condition number of  op(A) * op2(C)
	  where op2 is determined by CMODE as follows
	  CMODE =  1	op2(C) = C
	  CMODE =  0	op2(C) = I
	  CMODE = -1	op2(C) = inv(C)
	  The Skeel condition number  cond(A) = norminf( |inv(A)||A| )
	  is computed by computing scaling factors R such that
	  diag(R)*A*op2(C) is row equilibrated and computing the standard
	  infinity-norm condition number.

ARGUMENTS
       WORK    double precision workspace of size 5*N.

       IWORK   integer workspace of size N.

    LAPACK routine (version 3.2) November 2008			DLA_GBRCOND(1)
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