spr Interface

public interface spr

SPR performs the symmetric rank 1 operation A := alphaxx**T + A, where alpha is a real scalar, x is an n element vector and A is an n by n symmetric matrix, supplied in packed form.


Subroutines

public pure subroutine dspr(uplo, n, alpha, x, incx, ap)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
real(kind=dp), intent(in) :: alpha
real(kind=dp), intent(in) :: x(*)
integer(kind=ilp), intent(in) :: incx
real(kind=dp), intent(inout) :: ap(*)

public pure subroutine sspr(uplo, n, alpha, x, incx, ap)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
real(kind=sp), intent(in) :: alpha
real(kind=sp), intent(in) :: x(*)
integer(kind=ilp), intent(in) :: incx
real(kind=sp), intent(inout) :: ap(*)

Module Procedures

public interface stdlib_dspr()

Arguments

None

public interface stdlib_sspr()

Arguments

None