1  /*
 2   * Copyright (c) 2015 Apple Inc. All rights reserved.
 3   *
 4   * @APPLE_LICENSE_HEADER_START@
 5   *
 6   * This file contains Original Code and/or Modifications of Original Code
 7   * as defined in and that are subject to the Apple Public Source License
 8   * Version 2.0 (the 'License'). You may not use this file except in
 9   * compliance with the License. Please obtain a copy of the License at
10   * http://www.opensource.apple.com/apsl/ and read it before using this
11   * file.
12   *
13   * The Original Code and all software distributed under the License are
14   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18   * Please see the License for the specific language governing rights and
19   * limitations under the License.
20   *
21   * @APPLE_LICENSE_HEADER_END@
22   */
23  
24  /*	CFBigNumber.h
25  	Copyright (c) 2012-2014, Apple Inc. All rights reserved.
26  */
27  
28  #if !defined(__COREFOUNDATION_CFBIGNUMBER__)
29  #define __COREFOUNDATION_CFBIGNUMBER__ 1
30  
31  #include <CoreFoundation/CFBase.h>
32  #include <CoreFoundation/CFNumber.h>
33  
34  
35  // Base 1 billion number: each digit represents 0 to 999999999
36  typedef struct {
37      uint32_t digits[5];
38      int32_t sign:8;
39      uint32_t __:24;
40  } _CFBigNum;
41  
42  void _CFBigNumInitWithInt8(_CFBigNum *r, int8_t inNum);
43  void _CFBigNumInitWithInt16(_CFBigNum *r, int16_t inNum);
44  void _CFBigNumInitWithInt32(_CFBigNum *r, int32_t inNum);
45  void _CFBigNumInitWithInt64(_CFBigNum *r, int64_t inNum);
46  #ifdef __LP64__
47  void _CFBigNumInitWithInt128(_CFBigNum *r, __int128_t inNum);
48  #endif
49  
50  void _CFBigNumInitWithUInt8(_CFBigNum *r, uint8_t inNum);
51  void _CFBigNumInitWithUInt16(_CFBigNum *r, uint16_t inNum);
52  void _CFBigNumInitWithUInt32(_CFBigNum *r, uint32_t inNum);
53  void _CFBigNumInitWithUInt64(_CFBigNum *r, uint64_t inNum);
54  #ifdef __LP64__
55  void _CFBigNumInitWithUInt128(_CFBigNum *r, __uint128_t inNum);
56  #endif
57  
58  int8_t  _CFBigNumGetInt8(const _CFBigNum *num);
59  int16_t _CFBigNumGetInt16(const _CFBigNum *num);
60  int32_t _CFBigNumGetInt32(const _CFBigNum *num);
61  int64_t _CFBigNumGetInt64(const _CFBigNum *num);
62  #ifdef __LP64__
63  __int128_t _CFBigNumGetInt128(const _CFBigNum *num);
64  #endif
65  
66  uint8_t  _CFBigNumGetUInt8(const _CFBigNum *num);
67  uint16_t _CFBigNumGetUInt16(const _CFBigNum *num);
68  uint32_t _CFBigNumGetUInt32(const _CFBigNum *num);
69  uint64_t _CFBigNumGetUInt64(const _CFBigNum *num);
70  #ifdef __LP64__
71  __uint128_t _CFBigNumGetUInt128(const _CFBigNum *num);
72  #endif
73  
74  void _CFBigNumInitWithCFNumber(_CFBigNum *r, CFNumberRef input);
75  void _CFBigNumInitWithBytes(_CFBigNum *r, const void *bytes, CFNumberType type);
76  CFNumberRef _CFNumberCreateWithBigNum(const _CFBigNum *input);
77  
78  
79  CFComparisonResult _CFBigNumCompare(const _CFBigNum *a, const _CFBigNum *b);
80  
81  void _CFBigNumNeg(_CFBigNum *r, const _CFBigNum *a);
82  uint8_t _CFBigNumAdd(_CFBigNum *r, const _CFBigNum *a, const _CFBigNum *b);
83  uint8_t _CFBigNumSub(_CFBigNum *r, const _CFBigNum *a, const _CFBigNum *b);
84  
85  
86  void _CFBigNumToCString(const _CFBigNum *vp, Boolean leading_zeros, Boolean leading_plus, char *buffer, size_t buflen);
87  void _CFBigNumFromCString(_CFBigNum *r, const char *string);
88  
89  char *_CFBigNumCopyDescription(const _CFBigNum *num); // caller must free() returned ptr
90  
91  
92  #endif /* ! __COREFOUNDATION_CFBIGNUMBER__ */
93