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/** @file
* IPRT - Sorting.
*/
/*
* Copyright (C) 2006-2011 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___iprt_sort_h
#define ___iprt_sort_h
#include <iprt/types.h>
/** @defgroup grp_rt_sort RTSort - Sorting Algorithms
* @ingroup grp_rt
* @{ */
RT_C_DECLS_BEGIN
/**
* Callback for comparing two array elements.
*
* @retval 0 if equal.
* @retval -1 if @a pvElement1 comes before @a pvElement2.
* @retval 1 if @a pvElement1 comes after @a pvElement2.
*
* @param pvElement1 The 1st element.
* @param pvElement2 The 2nd element.
* @param pvUser The user argument passed to the sorting function.
*/
typedef DECLCALLBACK(int) FNRTSORTCMP(void const *pvElement1, void const *pvElement2, void *pvUser);
/** Pointer to a compare function. */
typedef FNRTSORTCMP *PFNRTSORTCMP;
/**
* Sorter function for an array of variable sized elementes.
*
* @param papvArray The array to sort.
* @param cElements The number of elements in the array.
* @param cbElements The size of an array element.
* @param pfnCmp Callback function comparing two elements.
* @param pvUser User argument for the callback.
*/
typedef DECLCALLBACK(void) FNRTSORT(void *pvArray, size_t cElements, size_t cbElement, PFNRTSORTCMP pfnCmp, void *pvUser);
/** Pointer to a sorter function for an array of variable sized elements. */
typedef FNRTSORT *PFNRTSORT;
/**
* Pointer array sorter function.
*
* @param papvArray The array to sort.
* @param cElements The number of elements in the array.
* @param pfnCmp Callback function comparing two elements.
* @param pvUser User argument for the callback.
*/
typedef DECLCALLBACK(void) FNRTSORTAPV(void **papvArray, size_t cElements, PFNRTSORTCMP pfnCmp, void *pvUser);
/** Pointer to a pointer array sorter function. */
typedef FNRTSORTAPV *PFNRTSORTAPV;
/**
* Shell sort an array of variable sized elementes.
*
* @param papvArray The array to sort.
* @param cElements The number of elements in the array.
* @param cbElements The size of an array element.
* @param pfnCmp Callback function comparing two elements.
* @param pvUser User argument for the callback.
*/
RTDECL(void) RTSortShell(void *pvArray, size_t cElements, size_t cbElement, PFNRTSORTCMP pfnCmp, void *pvUser);
/**
* Same as RTSortShell but speciallized for an array containing element
* pointers.
*
* @param papvArray The array to sort.
* @param cElements The number of elements in the array.
* @param pfnCmp Callback function comparing two elements.
* @param pvUser User argument for the callback.
*/
RTDECL(void) RTSortApvShell(void **papvArray, size_t cElements, PFNRTSORTCMP pfnCmp, void *pvUser);
/**
* Checks if an array of variable sized elementes is sorted.
*
* @returns true if it is sorted, false if it isn't.
* @param papvArray The array to check.
* @param cElements The number of elements in the array.
* @param cbElements The size of an array element.
* @param pfnCmp Callback function comparing two elements.
* @param pvUser User argument for the callback.
*/
RTDECL(bool) RTSortIsSorted(void const *pvArray, size_t cElements, size_t cbElement, PFNRTSORTCMP pfnCmp, void *pvUser);
/**
* Same as RTSortShell but speciallized for an array containing element
* pointers.
*
* @returns true if it is sorted, false if it isn't.
* @param papvArray The array to check.
* @param cElements The number of elements in the array.
* @param pfnCmp Callback function comparing two elements.
* @param pvUser User argument for the callback.
*/
RTDECL(bool) RTSortApvIsSorted(void const * const *papvArray, size_t cElements, PFNRTSORTCMP pfnCmp, void *pvUser);
RT_C_DECLS_END
/** @} */
#endif
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