#include <config.h>
#include <functions/Sum.h>
#include <sarray/SArray.h>

#include <stdexcept>

using std::vector;
using std::logic_error;

Sum::Sum () : ScalarFunc ("sum", 1)
{
}

double
Sum::eval (vector <SArray const *> const &args) const
{
  double const *arg1 = args[0]->value ();
  long len = args[0]->length ();
  double value = 0;
  for (long i = 0; i < len; i++)
    {
      value += arg1[i];
    }
  return value;
}

bool Sum::checkParameterDim (vector <SArray const *> const &args) const
{
  return true;
}

bool Sum::isDiscreteValued(vector<SArray const *> const &args) const
{
  return allDiscrete(args);
}