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FunctionProduct.cc
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1 // -*- C++ -*-
2 // $Id: FunctionProduct.cc,v 1.3 2003/09/06 14:04:14 boudreau Exp $
4 #include <assert.h>
5 
6 namespace Genfun {
7 FUNCTION_OBJECT_IMP(FunctionProduct)
8 
10 _arg1(arg1->clone()),
11 _arg2(arg2->clone())
12 {
13  if (arg1->dimensionality()!=arg2->dimensionality()) {
14  std::cout
15  << "Warning: dimension mismatch in function product"
16  << std::endl;
17  assert(0);
18  }
19 }
20 
22  _arg1(right._arg1->clone()),
23  _arg2(right._arg2->clone())
24 {
25 }
26 
28 {
29  delete _arg1;
30  delete _arg2;
31 }
32 
33 
34 unsigned int FunctionProduct::dimensionality() const {
35  return _arg1->dimensionality();
36 }
37 
38 double FunctionProduct::operator ()(double x) const
39 {
40  return (*_arg1)(x)*(*_arg2)(x);
41 }
42 
43 double FunctionProduct::operator ()(const Argument & x) const
44 {
45  return (*_arg1)(x)*(*_arg2)(x);
46 }
47 
48 Derivative FunctionProduct::partial(unsigned int index) const {
49  const AbsFunction & fPrime =
50  (*_arg1)*(_arg2->partial(index)) + (_arg1->partial(index))*(*_arg2);
51  return Derivative(&fPrime);
52 }
53 
54 } // namespace Genfun