dla_gbrfsx_extended (l)  Linux Man Pages
dla_gbrfsx_extended: computes ..
Command to display dla_gbrfsx_extended
manual in Linux: $ man l dla_gbrfsx_extended
NAME
DLA_GBRFSX_EXTENDED  computes ..
SYNOPSIS
 SUBROUTINE DLA_GBRFSX_EXTENDED(

PREC_TYPE, TRANS_TYPE, N, KL, KU,
NRHS, AB, LDAB, AFB, LDAFB, IPIV,
COLEQU, C, B, LDB, Y, LDY,
BERR_OUT, N_NORMS, ERRS_N, ERRS_C,
RES, AYB, DY, Y_TAIL, RCOND,
ITHRESH, RTHRESH, DZ_UB,
IGNORE_CWISE, INFO )

IMPLICIT
NONE

INTEGER
INFO, LDAB, LDAFB, LDB, LDY, N, KL, KU, NRHS,
PREC_TYPE, TRANS_TYPE, N_NORMS, ITHRESH

LOGICAL
COLEQU, IGNORE_CWISE

DOUBLE
PRECISION RTHRESH, DZ_UB

INTEGER
IPIV( * )

DOUBLE
PRECISION AB( LDAB, * ), AFB( LDAFB, * ), B( LDB, * ),
Y( LDY, * ), RES(*), DY(*), Y_TAIL(*)

DOUBLE
PRECISION C( * ), AYB(*), RCOND, BERR_OUT(*),
ERRS_N( NRHS, * ), ERRS_C( NRHS, * )
PURPOSE
DLA_GBRFSX_EXTENDED computes ... .
ARGUMENTS
Pages related to dla_gbrfsx_extended
 dla_gbrfsx_extended (3)
 dla_gbrcond (l)  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 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 infinitynorm condition number
 dla_gbamv (l)  performs one of the matrixvector operations y := alpha*abs(A)*abs(x) + beta*abs(y),
 dla_geamv (l)  performs one of the matrixvector operations y := alpha*abs(A)*abs(x) + beta*abs(y),
 dla_gercond (l)  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 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 infinitynorm condition number
 dla_gerfsx_extended (l)  computes ..
 dla_lin_berr (l)  DLA_LIN_BERR compute componentwise relative backward error from the formula max(i) ( abs(R(i)) / ( abs(op(A_s))*abs(Y) + abs(B_s) )(i) ) where abs(Z) is the componentwise absolute value of the matrix or vector Z
 dla_porcond (l)  DLA_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 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 infinitynorm condition number