sbmv Interface
public interface sbmv
SBMV performs the matrix-vector operation y := alphaAx + beta*y, where alpha and beta are scalars, x and y are n element vectors and A is an n by n symmetric band matrix, with k super-diagonals.
Subroutines
public pure subroutine dsbmv(uplo, n, k, alpha, a, lda, x, incx, beta, y, incy)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=1), | intent(in) | :: | uplo | |||
| integer(kind=ilp), | intent(in) | :: | n | |||
| integer(kind=ilp), | intent(in) | :: | k | |||
| real(kind=dp), | intent(in) | :: | alpha | |||
| real(kind=dp), | intent(in) | :: | a(lda,*) | |||
| integer(kind=ilp), | intent(in) | :: | lda | |||
| real(kind=dp), | intent(in) | :: | x(*) | |||
| integer(kind=ilp), | intent(in) | :: | incx | |||
| real(kind=dp), | intent(in) | :: | beta | |||
| real(kind=dp), | intent(inout) | :: | y(*) | |||
| integer(kind=ilp), | intent(in) | :: | incy |
public pure subroutine ssbmv(uplo, n, k, alpha, a, lda, x, incx, beta, y, incy)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=1), | intent(in) | :: | uplo | |||
| integer(kind=ilp), | intent(in) | :: | n | |||
| integer(kind=ilp), | intent(in) | :: | k | |||
| real(kind=sp), | intent(in) | :: | alpha | |||
| real(kind=sp), | intent(in) | :: | a(lda,*) | |||
| integer(kind=ilp), | intent(in) | :: | lda | |||
| real(kind=sp), | intent(in) | :: | x(*) | |||
| integer(kind=ilp), | intent(in) | :: | incx | |||
| real(kind=sp), | intent(in) | :: | beta | |||
| real(kind=sp), | intent(inout) | :: | y(*) | |||
| integer(kind=ilp), | intent(in) | :: | incy |
Module Procedures
public pure subroutine stdlib_dsbmv(uplo, n, k, alpha, a, lda, x, incx, beta, y, incy)
DSBMV performs the matrix-vector operation y := alphaAx + beta*y, where alpha and beta are scalars, x and y are n element vectors and A is an n by n symmetric band matrix, with k super-diagonals.
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=1), | intent(in) | :: | uplo | |||
| integer(kind=ilp), | intent(in) | :: | n | |||
| integer(kind=ilp), | intent(in) | :: | k | |||
| real(kind=dp), | intent(in) | :: | alpha | |||
| real(kind=dp), | intent(in) | :: | a(lda,*) | |||
| integer(kind=ilp), | intent(in) | :: | lda | |||
| real(kind=dp), | intent(in) | :: | x(*) | |||
| integer(kind=ilp), | intent(in) | :: | incx | |||
| real(kind=dp), | intent(in) | :: | beta | |||
| real(kind=dp), | intent(inout) | :: | y(*) | |||
| integer(kind=ilp), | intent(in) | :: | incy |
public pure subroutine stdlib_ssbmv(uplo, n, k, alpha, a, lda, x, incx, beta, y, incy)
SSBMV performs the matrix-vector operation y := alphaAx + beta*y, where alpha and beta are scalars, x and y are n element vectors and A is an n by n symmetric band matrix, with k super-diagonals.
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=1), | intent(in) | :: | uplo | |||
| integer(kind=ilp), | intent(in) | :: | n | |||
| integer(kind=ilp), | intent(in) | :: | k | |||
| real(kind=sp), | intent(in) | :: | alpha | |||
| real(kind=sp), | intent(in) | :: | a(lda,*) | |||
| integer(kind=ilp), | intent(in) | :: | lda | |||
| real(kind=sp), | intent(in) | :: | x(*) | |||
| integer(kind=ilp), | intent(in) | :: | incx | |||
| real(kind=sp), | intent(in) | :: | beta | |||
| real(kind=sp), | intent(inout) | :: | y(*) | |||
| integer(kind=ilp), | intent(in) | :: | incy |