Golang umfpack_dl_report_info Examples

Example #1

File: linsol_umfpack.go Project: yunpeng1/gosl

// SolveR solves the linear Real system A.x = b
func (o *LinSolUmfpack) SolveR(xR, bR []float64, dummy bool) (err error) {

	// check
	if !o.is_initialised {
		return chk.Err("linear solver must be initialised first\n")
	}
	if o.cmplx {
		return chk.Err(_linsol_umfpack_err10)
	}

	// start time
	if o.ton {
		o.tini = time.Now()
	}

	// message
	if o.verb {
		io.Pfgreen("\n . . . . . . . . . . . . . . LinSolUmfpack.SolveR . . . . . . . . . . . . . . . \n\n")
	}

	// UMFPACK: pointers
	pxR := (*C.double)(unsafe.Pointer(&xR[0]))
	pbR := (*C.double)(unsafe.Pointer(&bR[0]))

	// UMFPACK: solve
	st := C.umfpack_dl_solve(C.UMFPACK_A, o.ap, o.ai, o.ax, pxR, pbR, o.unum, o.uctrl, o.uinfo)
	if st != C.UMFPACK_OK {
		return chk.Err(_linsol_umfpack_err11, Uerr2Text[int(st)])
	}
	if o.verb {
		C.umfpack_dl_report_info(o.uctrl, o.uinfo)
	}

	// duration
	if o.ton {
		io.Pfcyan("%s: Time spent in LinSolUmfpack.Solve = %v\n", o.name, time.Now().Sub(o.tini))
	}
	return
}

Example #2

File: linsol_umfpack.go Project: yunpeng1/gosl

// Fact performs symbolic/numeric factorisation. This method also converts the triplet form
// to the column-compressed form, including the summation of duplicated entries
func (o *LinSolUmfpack) Fact() (err error) {

	// check
	if !o.is_initialised {
		return chk.Err("linear solver must be initialised first\n")
	}

	// start time
	if o.ton {
		o.tini = time.Now()
	}

	// message
	if o.verb {
		io.Pfgreen("\n . . . . . . . . . . . . . . LinSolUmfpack.Fact . . . . . . . . . . . . . . . \n\n")
	}

	// clean up
	if o.factorised {
		o.Clean()
	}

	// factorisation
	if o.cmplx {

		// UMFPACK: convert triplet to column-compressed format
		st := C.umfpack_zl_triplet_to_col(C.LONG(o.tC.m), C.LONG(o.tC.n), C.LONG(o.tC.pos), o.ti, o.tj, o.tx, o.tz, o.ap, o.ai, o.ax, o.az, nil)
		if st != C.UMFPACK_OK {
			return chk.Err(_linsol_umfpack_err04, Uerr2Text[int(st)])
		}

		// UMFPACK: symbolic factorisation
		st = C.umfpack_zl_symbolic(C.LONG(o.tC.m), C.LONG(o.tC.n), o.ap, o.ai, o.ax, o.az, &o.usymb, o.uctrl, nil)
		if st != C.UMFPACK_OK {
			return chk.Err(_linsol_umfpack_err05, Uerr2Text[int(st)])
		}

		// UMFPACK: numeric factorisation
		st = C.umfpack_zl_numeric(o.ap, o.ai, o.ax, o.az, o.usymb, &o.unum, o.uctrl, nil)
		if st != C.UMFPACK_OK {
			return chk.Err(_linsol_umfpack_err06, Uerr2Text[int(st)])
		}

	} else {

		// UMFPACK: convert triplet to column-compressed format
		st := C.umfpack_dl_triplet_to_col(C.LONG(o.tR.m), C.LONG(o.tR.n), C.LONG(o.tR.pos), o.ti, o.tj, o.tx, o.ap, o.ai, o.ax, nil)
		if st != C.UMFPACK_OK {
			return chk.Err(_linsol_umfpack_err07, Uerr2Text[int(st)])
		}

		// UMFPACK: symbolic factorisation
		st = C.umfpack_dl_symbolic(C.LONG(o.tR.m), C.LONG(o.tR.n), o.ap, o.ai, o.ax, &o.usymb, o.uctrl, o.uinfo)
		if st != C.UMFPACK_OK {
			return chk.Err(_linsol_umfpack_err08, Uerr2Text[int(st)])
		}
		if o.verb {
			C.umfpack_dl_report_info(o.uctrl, o.uinfo)
		}

		// UMFPACK: numeric factorisation
		st = C.umfpack_dl_numeric(o.ap, o.ai, o.ax, o.usymb, &o.unum, o.uctrl, o.uinfo)
		if st != C.UMFPACK_OK {
			return chk.Err(_linsol_umfpack_err09, Uerr2Text[int(st)])
		}
		if o.verb {
			C.umfpack_dl_report_info(o.uctrl, o.uinfo)
		}
	}

	// set flag
	o.factorised = true

	// duration
	if o.ton {
		io.Pfcyan("%s: Time spent in LinSolUmfpack.Fact  = %v\n", o.name, time.Now().Sub(o.tini))
	}
	return
}