Function blas_sys::c::cblas_dtrmv

pub unsafe extern fn cblas_dtrmv(layout: CBLAS_LAYOUT,
                                 uplo: CBLAS_UPLO,
                                 transa: CBLAS_TRANSPOSE,
                                 diag: CBLAS_DIAG,
                                 n: c_int,
                                 a: *const c_double,
                                 lda: c_int,
                                 x: *mut c_double,
                                 incx: c_int)