1  /** Constantine
 2   *  Copyright (c) 2018-2019    Status Research & Development GmbH
 3   *  Copyright (c) 2020-Present Mamy André-Ratsimbazafy
 4   *  Licensed and distributed under either of
 5   *    * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
 6   *    * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
 7   *  at your option. This file may not be copied, modified, or distributed except according to those terms.
 8   */
 9  #ifndef __CTT_H_DATATYPES__
10  #define __CTT_H_DATATYPES__
11  
12  #ifdef __cplusplus
13  extern "C" {
14  #endif
15  
16  // Basic Types
17  // ------------------------------------------------------------------------------------------------
18  // If we can, we want zero dependencies
19  
20  #if defined(__SIZE_TYPE__) && defined(__PTRDIFF_TYPE__)
21  typedef __SIZE_TYPE__    size_t;
22  typedef __PTRDIFF_TYPE__ ptrdiff_t;
23  #else
24  #include <stddef.h>
25  #endif
26  
27  #if defined(__UINT8_TYPE__) && defined(__UINT32_TYPE__) && defined(__UINT64_TYPE__)
28  typedef __UINT8_TYPE__   uint8_t;
29  typedef __UINT32_TYPE__  uint32_t;
30  typedef __UINT64_TYPE__  uint64_t;
31  #else
32  #include <stdint.h>
33  #endif
34  
35  // https://github.com/nim-lang/Nim/blob/v1.6.12/lib/nimbase.h#L318
36  #if defined(__STDC_VERSION__) && __STDC_VERSION__>=199901
37  # define ctt_bool _Bool
38  #else
39  # define ctt_bool unsigned char
40  #endif
41  
42  typedef size_t           secret_word;
43  typedef size_t           secret_bool;
44  typedef uint8_t          byte;
45  
46  // Sizes
47  // ------------------------------------------------------------------------------------------------
48  
49  #define CTT_WORD_BITWIDTH        (sizeof(secret_word)*8)
50  #define CTT_WORDS_REQUIRED(bits) ((bits+CTT_WORD_BITWIDTH-1)/CTT_WORD_BITWIDTH)
51  
52  // Attributes
53  // ------------------------------------------------------------------------------------------------
54  
55  #if defined(_MSC_VER)
56  #  define ctt_align(x)  __declspec(align(x))
57  #else
58  #  define ctt_align(x)  __attribute__((aligned(x)))
59  #endif
60  
61  // ------------------------------------------------------------------------------------------------
62  
63  #ifdef __cplusplus
64  }
65  #endif
66  
67  #endif