avr-libc: assert.h Source File

avr-libc 2.0.0 Standard C library for AVR-GCC |

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assert.h
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1 /* Copyright (c) 2005,2007 Joerg Wunsch
2 All rights reserved.
3
4 Portions of documentation Copyright (c) 1991, 1993
5 The Regents of the University of California.
6
7 All rights reserved.
8
9 Redistribution and use in source and binary forms, with or without
10 modification, are permitted provided that the following conditions are met:
11
12 * Redistributions of source code must retain the above copyright
13 notice, this list of conditions and the following disclaimer.
14
15 * Redistributions in binary form must reproduce the above copyright
16 notice, this list of conditions and the following disclaimer in
17 the documentation and/or other materials provided with the
18 distribution.
19
20 * Neither the name of the copyright holders nor the names of
21 contributors may be used to endorse or promote products derived
22 from this software without specific prior written permission.
23
24 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 POSSIBILITY OF SUCH DAMAGE.
35
36 $Id: assert.h 2290 2012-02-04 02:08:47Z dmix $
37 */
38
39 /** \file */
40 /** \defgroup avr_assert <assert.h>: Diagnostics
41 \code #include <assert.h> \endcode
42
43 This header file defines a debugging aid.
44
45 As there is no standard error output stream available for many
46 applications using this library, the generation of a printable
47 error message is not enabled by default. These messages will
48 only be generated if the application defines the macro
49
50 \code __ASSERT_USE_STDERR \endcode
51
52 before including the \c <assert.h> header file. By default,
53 only abort() will be called to halt the application.
54 */
55
56 /*@{*/
57
58 /*
59 * The ability to include this file (with or without NDEBUG) is a
60 * feature.
61 */
62
63 #undef assert
64
65 #include <stdlib.h>
66
67 #if defined(__DOXYGEN__)
68 /**
69 * \def assert
70 * \param expression Expression to test for.
71 *
72 * The assert() macro tests the given expression and if it is false,
73 * the calling process is terminated. A diagnostic message is written
74 * to stderr and the function abort() is called, effectively
75 * terminating the program.
76 *
77 * If expression is true, the assert() macro does nothing.
78 *
79 * The assert() macro may be removed at compile time by defining
80 * NDEBUG as a macro (e.g., by using the compiler option -DNDEBUG).
81 */
82 # define assert(expression)
83
84 #else /* !DOXYGEN */
85
86 # if defined(NDEBUG)
87 # define assert(e) ((void)0)
88 # else /* !NDEBUG */
89 # if defined(__ASSERT_USE_STDERR)
90 # define assert(e) ((e) ? (void)0 : \
91 __assert(__func__, __FILE__, __LINE__, #e))
92 # else /* !__ASSERT_USE_STDERR */
93 # define assert(e) ((e) ? (void)0 : abort())
94 # endif /* __ASSERT_USE_STDERR */
95 # endif /* NDEBUG */
96 #endif /* DOXYGEN */
97
98 #ifdef __cplusplus
99 extern "C" {
100 #endif
101
102 #if !defined(__DOXYGEN__)
103
104 extern void __assert(const char *__func, const char *__file,
105 int __lineno, const char *__sexp);
106
107 #endif /* not __DOXYGEN__ */
108
109 #ifdef __cplusplus
110 }
111 #endif
112
113 /*@}*/
114 /* EOF */
stdlib.h