blas_sys::c::cblas_sgemv

pub unsafe extern fn cblas_sgemv(layout: CBLAS_LAYOUT, transa: CBLAS_TRANSPOSE, m: c_int, n: c_int, alpha: c_float, a: *const c_float, lda: c_int, x: *const c_float, incx: c_int, beta: c_float, y: *mut c_float, incy: c_int)