la_gerpvgrw Interface

public interface la_gerpvgrw

LA_GERPVGRW computes the reciprocal pivot growth factor norm(A)/norm(U). The "max absolute element" norm is used. If this is much less than 1, the stability of the LU factorization of the (equilibrated) matrix A could be poor. This also means that the solution X, estimated condition numbers, and error bounds could be unreliable.


Functions

public pure function cla_gerpvgrw(n, ncols, a, lda, af, ldaf)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: ncols
complex(kind=sp), intent(in) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
complex(kind=sp), intent(in) :: af(ldaf,*)
integer(kind=ilp), intent(in) :: ldaf

Return Value real(kind=sp)

public pure function dla_gerpvgrw(n, ncols, a, lda, af, ldaf)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: ncols
real(kind=dp), intent(in) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
real(kind=dp), intent(in) :: af(ldaf,*)
integer(kind=ilp), intent(in) :: ldaf

Return Value real(kind=dp)

public pure function sla_gerpvgrw(n, ncols, a, lda, af, ldaf)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: ncols
real(kind=sp), intent(in) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
real(kind=sp), intent(in) :: af(ldaf,*)
integer(kind=ilp), intent(in) :: ldaf

Return Value real(kind=sp)

public pure function zla_gerpvgrw(n, ncols, a, lda, af, ldaf)

Arguments

Type IntentOptional Attributes Name
integer(kind=ilp), intent(in) :: n
integer(kind=ilp), intent(in) :: ncols
complex(kind=dp), intent(in) :: a(lda,*)
integer(kind=ilp), intent(in) :: lda
complex(kind=dp), intent(in) :: af(ldaf,*)
integer(kind=ilp), intent(in) :: ldaf

Return Value real(kind=dp)

Module Procedures

public interface stdlib_cla_gerpvgrw()

Arguments

None

public interface stdlib_dla_gerpvgrw()

Arguments

None

public interface stdlib_sla_gerpvgrw()

Arguments

None

public interface stdlib_zla_gerpvgrw()

Arguments

None