libgphoto2 photo camera library (libgphoto2) API 2.5.30
compiletime-assert.h File Reference

Allow compile time assertions with or without C11. More...

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Macros

#define COMPILETIME_ASSERT(CONDITION)
 
#define MAKE_BARE_COMPILETIME_ASSERT_NAME
 
#define MAKE_BARE_COMPILETIME_ASSERT_NAME1(BASE, PARAM)    MAKE_BARE_COMPILETIME_ASSERT_NAME2(BASE, PARAM)
 
#define MAKE_BARE_COMPILETIME_ASSERT_NAME2(BASE, PARAM)    BASE ## _ ## PARAM
 
#define BARE_COMPILETIME_ASSERT(CONDITION)
 

Detailed Description

Allow compile time assertions with or without C11.

C11 has added static_assert(EXPR, MSG) to assert.h, but C99 only knows runtime assertions using assert(EXPR). This defines COMPILETIME_ASSERT(EXPR) which works with both C99 and C11 and later.

Author
Copyright (C) 2010-2021 Hans Ulrich Niedermann hun@n.nosp@m.-dim.nosp@m.ensio.nosp@m.nal..nosp@m.de

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Macro Definition Documentation

◆ BARE_COMPILETIME_ASSERT

#define BARE_COMPILETIME_ASSERT (   CONDITION)
Value:
void MAKE_BARE_COMPILETIME_ASSERT_NAME(void); \
void MAKE_BARE_COMPILETIME_ASSERT_NAME(void) \
{ \
COMPILETIME_ASSERT(CONDITION); \
}

Compiletime assertion for use outside a function.

◆ COMPILETIME_ASSERT

#define COMPILETIME_ASSERT (   CONDITION)
Value:
switch (0) { /* error here means assertion has failed */ \
case 0: /* error here means assertion has failed */ \
case (CONDITION): /* error here means assertion has failed */ \
break; \
}

Compiletime assertion for use inside a function.

◆ MAKE_BARE_COMPILETIME_ASSERT_NAME

#define MAKE_BARE_COMPILETIME_ASSERT_NAME
Value:
MAKE_BARE_COMPILETIME_ASSERT_NAME1(COMPILETIME_ASSERT_fails_in_line, \
__LINE__)