stdlib_dtrsv Subroutine
public pure subroutine stdlib_dtrsv(uplo, trans, diag, n, a, lda, x, incx)
DTRSV solves one of the systems of equations Ax = b, or ATx = b, where b and x are n element vectors and A is an n by n unit, or non-unit, upper or lower triangular matrix. No test for singularity or near-singularity is included in this routine. Such tests must be performed before calling this routine.
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=1), | intent(in) | :: | uplo | |||
| character(len=1), | intent(in) | :: | trans | |||
| character(len=1), | intent(in) | :: | diag | |||
| integer(kind=ilp), | intent(in) | :: | n | |||
| real(kind=dp), | intent(in) | :: | a(lda,*) | |||
| integer(kind=ilp), | intent(in) | :: | lda | |||
| real(kind=dp), | intent(inout) | :: | x(*) | |||
| integer(kind=ilp), | intent(in) | :: | incx |