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osapi_cc_stdc.h
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1 /*
2  * FILE: osapi_cc_stdc.h - Specific compiler related definitions
3  *
4  * (c) Copyright, Real-Time Innovations, 2012-2016
5  *
6  * All rights reserved.
7  *
8  * No duplications, whole or partial, manual or electronic, may be made
9  * without express written permission. Any such copies, or
10  * revisions thereof, must display this notice unaltered.
11  * This code contains trade secrets of Real-Time Innovations, Inc.
12  *
13  * Modification History
14  * --------------------
15  * 28jul2016,tk Refactored from osapi_config.h
16  */
17 /*ce \file
18  * \brief OS API Configuration
19  */
20 #ifndef osapi_cc_stdc_h
21 #define osapi_cc_stdc_h
22 
23 /* NOTE: We (RTI) build for Windows using a cygwin cpp.exe to generate
24  * the dependencies. In addition, MSC only defines __STDC__ when using the /Za
25  * option. Thus, check for more than just __STDC__ as we test MSC
26  */
27 #if !defined(__STDC__) && !defined(_MSC_VER) && !defined(RTI_WIN32)
28 #error "osapi_cc_stdc.h used used with a non-standard C compiler"
29 #endif
30 
31 #include <limits.h>
32 #include <stddef.h>
33 
34 /*******************************************************************************
35  * Define types for for MS VS. The supported types can be found here:
36  *
37  * https://msdn.microsoft.com/en-us/library/s3f49ktz.aspx
38  ******************************************************************************/
39 #if defined(_MSC_VER) || defined(RTI_WIN32)
40 
41 typedef signed char RTI_INT8;
42 typedef unsigned char RTI_UINT8;
43 typedef signed short RTI_INT16;
44 typedef unsigned short RTI_UINT16;
45 typedef signed int RTI_INT32;
46 typedef unsigned int RTI_UINT32;
47 typedef signed long long RTI_INT64;
48 typedef unsigned long long RTI_UINT64;
49 
50 #define RTI_HAVE_FLOAT
51 typedef float RTI_FLOAT32;
52 
53 #define RTI_HAVE_DOUBLE
54 typedef double RTI_DOUBLE64;
55 
56 #if OSAPI_ENABLE_LONG_DOUBLE
57 #error "Native long double is not supported on Win32."
58 #else
59 typedef struct RTI_DOUBLE128
60 {
61  char bytes[16];
62 } RTI_DOUBLE128;
63 #endif
64 
65 #else /* checks when __STDC__ is defined */
66 
67 /*******************************************************************************
68  * Define/Check STDC compiler integer mappings
69  ******************************************************************************/
70 #if SCHAR_MAX == 127
71 /*i
72  */
73 typedef signed char RTI_INT8;
74 
75 /*i
76  */
77 typedef unsigned char RTI_UINT8;
78 #else
79 #error "SCHAR_MAX is unknown, could not determine RTI_INT8/UINT8."
80 #endif /* SCHAR_MAX */
81 
82 #if SHRT_MAX == 32767
83 /*i
84  */
85 typedef signed short RTI_INT16;
86 
87 /*i
88  */
89 typedef unsigned short RTI_UINT16;
90 #else
91 #error "SHRT_MAX is unknown, could not determine RTI_INT16/UINT16."
92 #endif /* SHRT_MAX */
93 
94 #if INT_MAX == 2147483647
95 /*i
96  */
97 typedef signed int RTI_INT32;
98 
99 /*i
100  */
101 typedef unsigned int RTI_UINT32;
102 #else
103 #error "INT_MAX is unknown, could not determine RTI_INT32/UINT32."
104 #endif /* INT_MAX */
105 
106 #ifdef LLONG_MAX
107 #if LLONG_MAX == 9223372036854775807LL
108 /*i
109  */
110  typedef signed long long int RTI_INT64;
111 
112  /*i
113  */
114  typedef unsigned long long int RTI_UINT64;
115 #else
116  #error "LLONG_MAX is unknown, could not determine RTI_INT64/UINT64."
117 #endif /* LLONG_MAX has unknown size */
118 #elif defined(__LONG_LONG_MAX__)
119 #if __LONG_LONG_MAX__ == 9223372036854775807LL
120 /*i
121  */
122  typedef signed long long int RTI_INT64;
123 
124  /*i
125  */
126  typedef unsigned long long int RTI_UINT64;
127 #else /* __LONG_LONG_MAX__ has unknown size */
128 #error "__LONG_LONG_MAX__ is unknown, could not determine RTI_INT64/UINT64."
129 #endif
130 #else /* no size defined */
131 #error "Could not determine RTI_INT64/RTI_UINT64 type"
132 #endif
133 
134 /*******************************************************************************
135  * Define compiler floating point mappings
136  ******************************************************************************/
137 #if (__SIZEOF_FLOAT__ == 4) || (__FLT_MAX_EXP__ == 128) || (FLT_MAX_EXP == 128) || defined(__VOS__)
138 typedef float RTI_FLOAT32;
139 #define RTI_HAVE_FLOAT
140 #else
141 #error "__SIZEOF_FLOAT__ is unknown (GCC), could not determine RTI_FLOAT32."
142 #endif
143 
144 #if (__SIZEOF_DOUBLE__ == 8) || (__DBL_MAX_EXP__ == 1024) || (DBL_MAX_EXP == 1024) || defined(__VOS__)
145 typedef double RTI_DOUBLE64;
146 #define RTI_HAVE_DOUBLE
147 #else
148 #error "__SIZEOF_DOUBLE__ is unknown (GCC), could not determine RTI_DOUBLE64."
149 #endif
150 
151 #if OSAPI_ENABLE_LONG_DOUBLE
152 #if __GNUC__ > 4 || (__GNUC__ == 4 && (__GNUC_MINOR__ > 2))
153 typedef __float128 RTI_DOUBLE128;
154 #define RTI_HAVE_LONG_DOUBLE
155 #else
156 #error "Could not determine if long double is supported."
157 #endif
158 #else
159 typedef struct RTI_DOUBLE128
160 {
161  char bytes[16];
162 } RTI_DOUBLE128;
163 #endif
164 
165 #endif /* __STDC__ */
166 
167 /*******************************************************************************
168  * Define CPU endian
169  ******************************************************************************/
170 #if !defined(RTI_ENDIAN_LITTLE) && !defined(RTI_ENDIAN_BIG) && defined(__VOS__)
171 #define RTI_ENDIAN_BIG
172 #endif
173 
174 #if !defined(RTI_ENDIAN_LITTLE) && !defined(RTI_ENDIAN_BIG)
175 #ifdef __GNUC__
176 #if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || \
177  defined(__LITTLE_ENDIAN__) || (__BYTE_ORDER == __LITTLE_ENDIAN)
178 #define RTI_ENDIAN_LITTLE 1
179 #undef RTI_ENDIAN_BIG
180 #elif (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) || \
181  defined(__BIG_ENDIAN__) || (__BYTE_ORDER == __BIG_ENDIAN)
182 #define RTI_ENDIAN_BIG 1
183 #undef RTI_ENDIAN_LITTLE
184 #else
185 #error "Unable to determine GCC byte-order"
186 #endif /* __BYTE_ORDER__ */
187 #elif defined(_MSC_VER)
188 #if defined(_M_IX86) || defined(_M_X64)
189 #define RTI_ENDIAN_LITTLE 1
190 #undef RTI_ENDIAN_BIG
191 #else
192 #error "Unable to determine MSC byte-order"
193 #endif
194 #else
195 #error "Unable to determine endianess."
196 #endif /* !_M_IX86 */
197 #endif
198 
199 /*******************************************************************************
200  * Define various compiler compile options
201  ******************************************************************************/
202 
203 /* Function attributes */
204 #if defined(__GNUC__) && (__GNUC__ >= 4)
205 #define MUST_CHECK_RETURN __attribute__((warn_unused_result))
206 #define SHOULD_CHECK_RETURN
207 #define FUNCTION_SHOULD_TYPEDEF(ftdef_) \
208 typedef SHOULD_CHECK_RETURN ftdef_;
209 #define FUNCTION_MUST_TYPEDEF(ftdef_) \
210 typedef MUST_CHECK_RETURN ftdef_;
211 #elif defined(_MSC_VER) || defined(WIN32)
212 #if _MSC_VER >= 1900
213 #define MUST_CHECK_RETURN _Check_return_
214 #else
215 #include <CodeAnalysis\SourceAnnotations.h>
216 #define MUST_CHECK_RETURN [returnvalue:SA_Post(MustCheck=SA_Yes)]
217 #endif
218 #define SHOULD_CHECK_RETURN
219 #define FUNCTION_SHOULD_TYPEDEF(ftdef_) \
220 typedef ftdef_;
221 #define FUNCTION_MUST_TYPEDEF(ftdef_) \
222 typedef ftdef_;
223 #else
224 #define SHOULD_CHECK_RETURN
225 #define FUNCTION_SHOULD_TYPEDEF(ftdef_) \
226 typedef ftdef_;
227 #define FUNCTION_MUST_TYPEDEF(ftdef_) \
228 typedef ftdef_;
229 #endif
230 
231 #endif /* osapi_cc_stdc_h */
232 
RTI Connext DDS Micro Version 2.4.10 Copyright © Fri Jun 30 2017 Real-Time Innovations, Inc