mirror of https://github.com/OpenTTD/OpenTTD.git
58 lines
1.2 KiB
C++
58 lines
1.2 KiB
C++
|
/* $Id$ */
|
||
|
|
|
||
|
|
/** @file mem_func.hpp Functions related to memory operations. */
|
||
|
|
|
||
|
|
#ifndef MEM_FUNC_HPP
|
||
|
|
#define MEM_FUNC_HPP
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include "math_func.hpp"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Type-safe version of memcpy().
|
||
|
|
*
|
||
|
|
* @param destination Pointer to the destination buffer
|
||
|
|
* @param source Pointer to the source buffer
|
||
|
|
* @param num number of items to be copied. (!not number of bytes!)
|
||
|
|
*/
|
||
|
|
template <typename T>
|
||
|
|
FORCEINLINE void MemCpyT(T *destination, const T *source, uint num = 1)
|
||
|
|
{
|
||
|
|
memcpy(destination, source, num * sizeof(T));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Type safe memory reverse operation.
|
||
|
|
* Reverse a block of memory in steps given by the
|
||
|
|
* type of the pointers.
|
||
|
|
*
|
||
|
|
* @param ptr1 Start-pointer to the block of memory.
|
||
|
|
* @param ptr2 End-pointer to the block of memory.
|
||
|
|
*/
|
||
|
|
template<typename T>
|
||
|
|
FORCEINLINE void MemReverseT(T *ptr1, T *ptr2)
|
||
|
|
{
|
||
|
|
assert(ptr1 != NULL && ptr2 != NULL);
|
||
|
|
assert(ptr1 < ptr2);
|
||
|
|
|
||
|
|
do {
|
||
|
|
Swap(*ptr1, *ptr2);
|
||
|
|
} while (++ptr1 < --ptr2);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Type safe memory reverse operation (overloaded)
|
||
|
|
*
|
||
|
|
* @param ptr Pointer to the block of memory.
|
||
|
|
* @param num The number of items we want to reverse.
|
||
|
|
*/
|
||
|
|
template<typename T>
|
||
|
|
FORCEINLINE void MemReverseT(T *ptr, uint num)
|
||
|
|
{
|
||
|
|
assert(ptr != NULL);
|
||
|
|
|
||
|
|
MemReverseT(ptr, ptr + (num - 1));
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* MEM_FUNC_HPP */
|