/* $Id$ */

/** @file helpers.hpp */

#ifndef HELPERS_HPP
#define HELPERS_HPP

/** When allocating using malloc/calloc in C++ it is usually needed to cast the return value
*  from void* to the proper pointer type. Another alternative would be MallocT<> as follows */
template <typename T> FORCEINLINE T* MallocT(size_t num_elements)
{
	T *t_ptr = (T*)malloc(num_elements * sizeof(T));
	if (t_ptr == NULL && num_elements != 0) error("Out of memory. Cannot allocate %i bytes", num_elements * sizeof(T));
	return t_ptr;
}
/** When allocating using malloc/calloc in C++ it is usually needed to cast the return value
*  from void* to the proper pointer type. Another alternative would be MallocT<> as follows */
template <typename T> FORCEINLINE T* CallocT(size_t num_elements)
{
	T *t_ptr = (T*)calloc(num_elements, sizeof(T));
	if (t_ptr == NULL && num_elements != 0) error("Out of memory. Cannot allocate %i bytes", num_elements * sizeof(T));
	return t_ptr;
}
/** When allocating using malloc/calloc in C++ it is usually needed to cast the return value
*  from void* to the proper pointer type. Another alternative would be MallocT<> as follows */
template <typename T> FORCEINLINE T* ReallocT(T* t_ptr, size_t num_elements)
{
	t_ptr = (T*)realloc(t_ptr, num_elements * sizeof(T));
	if (t_ptr == NULL && num_elements != 0) error("Out of memory. Cannot reallocate %i bytes", num_elements * sizeof(T));
	return t_ptr;
}


/** type safe swap operation */
template<typename T> void Swap(T& a, T& b)
{
	T t = a;
	a = b;
	b = t;
}

#endif /* HELPERS_HPP */