Sqrt.cc

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// -*- C++ -*-
// $Id: Sqrt.cc,v 1.7 2010/06/16 18:22:01 garren Exp $
#include "CLHEP/GenericFunctions/Sqrt.hh"
#include <assert.h>
#include <cmath>    // for sqrt
namespace Genfun {
FUNCTION_OBJECT_IMP(Sqrt)
 
Sqrt::Sqrt()
{}
 
Sqrt::Sqrt(const Sqrt & right) : AbsFunction(right)
{
}
 
Sqrt::~Sqrt() {
}
 
double Sqrt::operator() (double x) const {
  return sqrt(x);
}
 
// don't generate warnings about unused parameter inside assert
#if defined __GNUC__ 
  #if __GNUC__ > 3 && __GNUC_MINOR__ > 6
    #pragma GCC diagnostic push
    #pragma GCC diagnostic ignored "-Wunused-parameter"
  #endif
#endif
#ifdef __clang__
  #pragma clang diagnostic push
  #pragma clang diagnostic ignored "-Wunused-parameter"
#endif
Derivative Sqrt::partial(unsigned int index) const {
  assert(index==0);
  const AbsFunction & fPrime = (0.5)/Sqrt();
  return Derivative(&fPrime);
}
#if defined __GNUC__ 
  #if __GNUC__ > 3 && __GNUC_MINOR__ > 6
    #pragma GCC diagnostic pop
  #endif
#endif
#ifdef __clang__
  #pragma clang diagnostic pop
#endif
 
} // namespace Genfun