Пример #1
0
func (p *floorPlan) F1(x *matrix.FloatMatrix) (f, Df *matrix.FloatMatrix, err error) {
	err = nil
	mn := x.Min(-1, -2, -3, -4, -5)
	if mn <= 0.0 {
		f, Df = nil, nil
		return
	}
	zeros := matrix.FloatZeros(5, 12)
	dk1 := matrix.FloatDiagonal(5, -1.0)
	dk2 := matrix.FloatZeros(5, 5)
	x17 := matrix.FloatVector(x.FloatArray()[17:])
	// -( Amin ./ (x17 .* x17) )
	diag := matrix.Div(p.Amin, matrix.Mul(x17, x17)).Scale(-1.0)
	dk2.SetIndexesFromArray(diag.FloatArray(), matrix.MakeDiagonalSet(5)...)
	Df, _ = matrix.FloatMatrixStacked(matrix.StackRight, zeros, dk1, dk2)

	x12 := matrix.FloatVector(x.FloatArray()[12:17])
	// f = -x[12:17] + div(Amin, x[17:]) == div(Amin, x[17:]) - x[12:17]
	f = matrix.Minus(matrix.Div(p.Amin, x17), x12)
	return
}