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KroneckerDelta.cc
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1 // -*- C++ -*-
2 // $Id: KroneckerDelta.cc,v 1.1 2007/01/21 20:54:34 boudreau Exp $
5 #include <assert.h>
6 
7 namespace Genfun {
8 FUNCTION_OBJECT_IMP(KroneckerDelta)
9 
11 {}
12 
14 {
15 }
16 
18 }
19 
20 double KroneckerDelta::operator() (double x) const {
21  if (x < 0.5 && x > -0.5) return 1;
22  return 0;
23 }
24 
25 
26 Derivative KroneckerDelta::partial(unsigned int index) const {
27  assert(index==0);
28  const AbsFunction & fPrime = FixedConstant(0);;
29  return Derivative(&fPrime);
30 }
31 
32 } // namespace Genfun
Derivative partial(unsigned int) const
virtual double operator()(double argument) const
#define FUNCTION_OBJECT_IMP(classname)