MPQC  2.3.1
scint.h
1 // This provides C99-like standard integer types. It is based on boost.org
2 // code which has been modified for inclusion in the SC Toolkit.
3 
4 // (C) Copyright boost.org 1999. Permission to copy, use, modify, sell
5 // and distribute this software is granted provided this copyright
6 // notice appears in all copies. This software is provided "as is" without
7 // express or implied warranty, and with no claim as to its suitability for
8 // any purpose.
9 
10 #ifndef util_misc_scint_h
11 #define util_misc_scint_h
12 
13 #include <scconfig.h>
14 
15 #ifdef HAVE_STDINT_H
16 
17 #include <stdint.h>
18 
19 namespace sc {
20 
21 typedef int8_t sc_int8_t;
22 typedef int_least8_t sc_int_least8_t;
23 typedef int_fast8_t sc_int_fast8_t;
24 typedef uint8_t sc_uint8_t;
25 typedef uint_least8_t sc_uint_least8_t;
26 typedef uint_fast8_t sc_uint_fast8_t;
27 
28 typedef int16_t sc_int16_t;
29 typedef int_least16_t sc_int_least16_t;
30 typedef int_fast16_t sc_int_fast16_t;
31 typedef uint16_t sc_uint16_t;
32 typedef uint_least16_t sc_uint_least16_t;
33 typedef uint_fast16_t sc_uint_fast16_t;
34 
35 typedef int32_t sc_int32_t;
36 typedef int_least32_t sc_int_least32_t;
37 typedef int_fast32_t sc_int_fast32_t;
38 typedef uint32_t sc_uint32_t;
39 typedef uint_least32_t sc_uint_least32_t;
40 typedef uint_fast32_t sc_uint_fast32_t;
41 
42 typedef intmax_t sc_intmax_t;
43 typedef uintmax_t sc_uintmax_t;
44 typedef int64_t sc_int64_t;
45 typedef int_least64_t sc_int_least64_t;
46 typedef int_fast64_t sc_int_fast64_t;
47 typedef uint64_t sc_uint64_t;
48 typedef uint_least64_t sc_uint_least64_t;
49 typedef uint_fast64_t sc_uint_fast64_t;
50 
51 }
52 
53 #else
54 
55 // This is not a complete implementation of the 1999 C Standard stdint.h
56 // header; it doesn't supply various macros which are not advisable for use in
57 // C++ programs.
58 
59 #include <limits.h> // implementation artifact; not part of interface
60 
61 namespace sc {
62 
63 // These are fairly safe guesses for some 16-bit, and most 32-bit and 64-bit
64 // platforms. For other systems, they will have to be hand tailored.
65 // Because the fast types are assumed to be the same as the undecorated types,
66 // it may be possible to hand tailor a more efficient implementation.
67 
68 // 8-bit types -------------------------------------------------------------//
69 
70 # if UCHAR_MAX == 0xff
71  typedef signed char sc_int8_t;
72  typedef signed char sc_int_least8_t;
73  typedef signed char sc_int_fast8_t;
74  typedef unsigned char sc_uint8_t;
75  typedef unsigned char sc_uint_least8_t;
76  typedef unsigned char sc_uint_fast8_t;
77 # else
78 # error defaults not correct; you must hand modify scint.h
79 # endif
80 
81 // 16-bit types ------------------------------------------------------------//
82 
83 # if USHRT_MAX == 0xffff
84  typedef short sc_int16_t;
85  typedef short sc_int_least16_t;
86  typedef short sc_int_fast16_t;
87  typedef unsigned short sc_uint16_t;
88  typedef unsigned short sc_uint_least16_t;
89  typedef unsigned short sc_uint_fast16_t;
90 # else
91 # error defaults not correct; you must hand modify scint.h
92 # endif
93 
94 // 32-bit types ------------------------------------------------------------//
95 
96 # if UINT_MAX == 0xffffffff
97  typedef int sc_int32_t;
98  typedef int sc_int_least32_t;
99  typedef int sc_int_fast32_t;
100  typedef unsigned int sc_uint32_t;
101  typedef unsigned int sc_uint_least32_t;
102  typedef unsigned int sc_uint_fast32_t;
103 # elif ULONG_MAX == 0xffffffff
104  typedef long sc_int32_t;
105  typedef long sc_int_least32_t;
106  typedef long sc_int_fast32_t;
107  typedef unsigned long sc_uint32_t;
108  typedef unsigned long sc_uint_least32_t;
109  typedef unsigned long sc_uint_fast32_t;
110 # else
111 # error defaults not correct; you must hand modify scint.h
112 # endif
113 
114 // 64-bit types + intmax_t and uintmax_t -----------------------------------//
115 
116 #if defined(ULONGLONG_MAX) && !defined(ULLONG_MAX)
117 # define ULLONG_MAX ULONGLONG_MAX
118 #endif
119 
120 # ifdef ULLONG_MAX
121 //# if ULLONG_MAX == 18446744073709551615 // 2**64 - 1
122 # if ULONGLONG_MAX == (0xffffffffffffffffuLL) // uLL reqd for xlC
123  typedef long long sc_intmax_t;
124  typedef unsigned long long sc_uintmax_t;
125  typedef long long sc_int64_t;
126  typedef long long sc_int_least64_t;
127  typedef long long sc_int_fast64_t;
128  typedef unsigned long long sc_uint64_t;
129  typedef unsigned long long sc_uint_least64_t;
130  typedef unsigned long long sc_uint_fast64_t;
131 # else
132 # error defaults not correct; you must hand modify scint.h
133 # endif
134 # elif ULONG_MAX != 0xffffffff
135 
136 # if ULONG_MAX == 18446744073709551615 // 2**64 - 1
137  typedef long sc_intmax_t;
138  typedef unsigned long sc_uintmax_t;
139  typedef long sc_int64_t;
140  typedef long sc_int_least64_t;
141  typedef long sc_int_fast64_t;
142  typedef unsigned long sc_uint64_t;
143  typedef unsigned long sc_uint_least64_t;
144  typedef unsigned long sc_uint_fast64_t;
145 # else
146 # error defaults not correct; you must hand modify scint.h
147 # endif
148 # else // assume no 64-bit integers
149 # error 64 bit integer types are required
150  typedef sc_int32_t sc_intmax_t;
151  typedef sc_uint32_t sc_uintmax_t;
152 # endif
153 
154 }
155 
156 #endif
157 
158 #endif
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