G4ArrayOps.hh

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/*
 * File:   G4ArrayOps.hh
 * Author: B. Wendt ([email protected])
 *
 * Created on July 28, 2012, 16:08
 */
 
// All the arrays that use the functions in this namespace MUST have a
// [] (bracket) operator for element-wise access
 
#ifndef G4ARRAYOPS_HH
#define G4ARRAYOPS_HH
 
#include "globals.hh"
 
#include <vector>
 
/** G4ArrayOps is a namespace that provides template functions for
 *  performing basic arithmatic operations on any data type that
 *  is accessed with the [] operator.
 */
namespace G4ArrayOps
{
/** Set's all the values in an array to a constant */
template<class T>
void Set(G4int Elements, T* To, T Value)
{
  for (G4int position = 0; position < Elements; position++) {
    To[position] = Value;
  }
}
 
/** Copy values from one array to another */
template<class T>
void Copy(G4int Elements, T* To, T* From)
{
  for (G4int position = 0; position < Elements; position++) {
    To[position] = From[position];
  }
}
 
/** Add two arrays together. If the second array is NULL then the
 *  'To' array is used as if the function were the += operator.
 */
template<class T>
void Add(G4int Elements, T* To, T* A1, T* A2 = nullptr)
{
  if (A2 == nullptr) {
    A2 = To;
  }
 
  for (G4int position = 0; position < Elements; position++) {
    To[position] = A2[position] + A1[position];
  }
}
 
/** Add a constant to an array. If the second array is NULL then the
 *  'To' array is used as if the function were the += operator.
 */
template<class T>
void Add(G4int Elements, T* To, T A1, T* A2 = NULL)
{
  if (A2 == NULL) {
    A2 = To;
  }
 
  for (G4int position = 0; position < Elements; position++) {
    To[position] = A1 + A2[position];
  }
}
 
/** Subtract an array from another. If the second array is NULL then the
 *  'To' array is used as if the function were the -= operator.
 */
template<class T>
void Subtract(G4int Elements, T* To, T* Minuend, T* Subtrahend = NULL)
{
  if (Subtrahend == NULL) {
    Subtrahend = Minuend;
    Minuend = To;
  }
 
  for (G4int position = 0; position < Elements; position++) {
    To[position] = Minuend[position] - Subtrahend[position];
  }
}
 
/** Multiply two arrays together. If the second array is NULL then the
 *  'To' array is used as if the function were the *= operator.
 */
template<class T>
void Multiply(G4int Elements, T* To, T* M1, T* M2 = nullptr)
{
  if (M2 == nullptr) {
    M2 = To;
  }
 
  for (G4int position = 0; position < Elements; position++) {
    To[position] = M2[position] * M1[position];
  }
}
 
/** Multiply an array by a constant. If the second array is NULL then the
 *  'To' array is used as if the function were the *= operator.
 */
template<class T>
void Multiply(G4int Elements, T* To, T M1, T* M2 = NULL)
{
  if (M2 == NULL) {
    M2 = To;
  }
 
  for (G4int position = 0; position < Elements; position++) {
    To[position] = M2[position] * M1;
  }
}
 
/** Divide an array by another. If the second array is NULL then the
 *  'To' array is used as if the function were the /= operator.
 */
template<class T>
void Divide(G4int Elements, T* To, T* Numerator, T* Denominator = NULL)
{
  if (Denominator == NULL) {
    Denominator = Numerator;
    Numerator = To;
  }
 
  for (G4int position = 0; position < Elements; position++) {
    To[position] = Numerator[position] / Denominator[position];
  }
}
 
/** Divide a constant by an array. If the second array is NULL then the
 *  'To' array is used as if the function were the /= operator.
 */
template<class T>
void Divide(G4int Elements, T* To, T Numerator, T* Denominator = NULL)
{
  if (Denominator == nullptr) {
    Denominator = To;
  }
 
  for (G4int position = 0; position < Elements; position++) {
    To[position] = Numerator / Denominator[position];
  }
}
 
template<class T>
void DeleteVectorOfPointers(std::vector<T>& Vector)
{
  for (unsigned int i = 0; i < Vector.size(); i++) {
    delete Vector[i];
  }
 
  delete &Vector;
}
}  // namespace G4ArrayOps
 
#endif /** G4ARRAYOPS_HH */