rtxBigInt.h

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00001 /*
00002  * Copyright (c) 2003-2012 Objective Systems, Inc.
00003  *
00004  * This software is furnished under a license and may be used and copied
00005  * only in accordance with the terms of such license and with the
00006  * inclusion of the above copyright notice. This software or any other
00007  * copies thereof may not be provided or otherwise made available to any
00008  * other person. No title to and ownership of the software is hereby
00009  * transferred.
00010  *
00011  * The information in this software is subject to change without notice
00012  * and should not be construed as a commitment by Objective Systems, Inc.
00013  *
00014  * PROPRIETARY NOTICE
00015  *
00016  * This software is an unpublished work subject to a confidentiality agreement
00017  * and is protected by copyright and trade secret law.  Unauthorized copying,
00018  * redistribution or other use of this work is prohibited.
00019  *
00020  * The above notice of copyright on this source code product does not indicate
00021  * any actual or intended publication of such source code.
00022  *
00023  *****************************************************************************/
00028 #ifndef _RTXBIGINT_H_
00029 #define _RTXBIGINT_H_
00030 
00031 #include "rtxsrc/rtxContext.h"
00032 
00033 /* Big Integer */
00034 
00035 typedef struct OSBigInt {
00036    OSSIZE    numocts;           /* number of used octets in mag         */
00037    OSOCTET   *mag;              /* magnitude                            */
00038    int       sign;              /* sign, can be -1, 0, 1                */
00039    OSSIZE    allocated;         /* number of allocated octets for mag   */
00040    OSBOOL    dynamic;           /* is buffer dynamic?                   */
00041 } OSBigInt;
00042 
00043 
00044 #ifdef __cplusplus
00045 extern "C" {
00046 #endif
00047 
00048 /* BigInt functions */
00049 
00056 EXTERNRT void rtxBigIntInit (OSBigInt* pInt);
00057 
00067 EXTERNRT int rtxBigIntSetStr
00068 (OSCTXT* pctxt, OSBigInt* pInt, const char* value, int radix);
00069 
00081 EXTERNRT int rtxBigIntSetStrn
00082 (OSCTXT* pctxt, OSBigInt* pInt, const char* value, OSSIZE len, int radix);
00083 
00093 EXTERNRT int rtxBigIntSetInt64 (OSCTXT* pctxt, OSBigInt* pInt, OSINT64 value);
00094 
00104 EXTERNRT int rtxBigIntSetUInt64
00105 (OSCTXT* pctxt, OSBigInt* pInt, OSUINT64 value);
00106 
00117 EXTERNRT int rtxBigIntSetBytes
00118 (OSCTXT* pctxt, OSBigInt* pInt, OSOCTET* value, OSSIZE vallen);
00119 
00127 EXTERNRT OSSIZE rtxBigIntGetDataLen (const OSBigInt* pInt);
00128 
00140 EXTERNRT int rtxBigIntGetData
00141 (OSCTXT* pctxt, const OSBigInt* pInt, OSOCTET* buffer, OSSIZE bufSize);
00142 
00151 EXTERNRT OSSIZE rtxBigIntDigitsNum (const OSBigInt* pInt, int radix);
00152 
00162 EXTERNRT int rtxBigIntCopy
00163 (OSCTXT* pctxt, const OSBigInt* pSrc, OSBigInt* pDst);
00164 
00176 EXTERNRT int rtxBigIntFastCopy
00177 (OSCTXT* pctxt, const OSBigInt* pSrc, OSBigInt* pDst);
00178 
00189 EXTERNRT int rtxBigIntToString
00190 (OSCTXT* pctxt, const OSBigInt* pInt, int radix, char* str, OSSIZE strSize);
00191 
00200 EXTERNRT int rtxBigIntPrint
00201 (const OSUTF8CHAR* name, const OSBigInt* bigint, int radix);
00202 
00213 EXTERNRT int rtxBigIntCompare (const OSBigInt* arg1, const OSBigInt* arg2);
00214 
00226 EXTERNRT int rtxBigIntStrCompare
00227 (OSCTXT* pctxt, const char* arg1, const char* arg2);
00228 
00236 EXTERNRT void rtxBigIntFree (OSCTXT* pctxt, OSBigInt* pInt);
00237 
00238 /* Arithmetic */
00248 EXTERNRT int rtxBigIntAdd
00249    (OSCTXT* pctxt,
00250     OSBigInt* result, const OSBigInt* arg1, const OSBigInt* arg2);
00251 
00261 EXTERNRT int rtxBigIntSubtract
00262    (OSCTXT* pctxt,
00263     OSBigInt* result, const OSBigInt* arg1, const OSBigInt* arg2);
00264 
00274 EXTERNRT int rtxBigIntMultiply
00275    (OSCTXT* pctxt,
00276     OSBigInt* result, const OSBigInt* arg1, const OSBigInt* arg2);
00277 
00278 /* Common */
00279 EXTERNRT unsigned short rtxBigIntBitsPerDigit (int radix);
00280 EXTERNRT short rtxBigIntByteRadix (int halfRadix);
00281 
00282 #ifdef __cplusplus
00283 }
00284 #endif
00285 
00286 #endif /* RTXBIGINT */
00287