sla_porcond man page on Scientific

sla_porcond man page on Scientific

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SLA_PORCONDLAPACK routine (version 3.2)				SLA_PORCOND(1)

NAME
       SLA_PORCOND  - SLA_PORCOND 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 condi‐
       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
       REAL FUNCTION SLA_PORCOND( UPLO, N, A, LDA, AF, LDAF, CMODE,  C,	 INFO,
		     WORK, IWORK )

	   IMPLICIT  NONE

	   CHARACTER UPLO

	   INTEGER   N, LDA, LDAF, INFO, CMODE

	   REAL	     A( LDA, * ), AF( LDAF, * ), WORK( * ), C( * )

	   INTEGER   IWORK( * )

PURPOSE
	  SLA_PORCOND 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    real workspace of size 3*N, and

       IWORK   integer workspace of size N.

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

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