/usr/include/libreoffice/sal/macros.h is in libreoffice-dev 1:3.5.2-2ubuntu1.
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/*************************************************************************
*
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*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
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*
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* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
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************************************************************************/
#ifndef _SAL_MACROS_H_
#define _SAL_MACROS_H_
#include <stddef.h>
#ifndef SAL_MAX
# define SAL_MAX(a,b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef SAL_MIN
# define SAL_MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef SAL_FIELDOFFSET
# define SAL_FIELDOFFSET(type, field) ((sal_Int32)(&((type *)16)->field) - 16)
#endif
#ifndef SAL_N_ELEMENTS
# if defined(__cplusplus) && ( defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L )
/*
* Magic template to calculate at compile time the number of elements
* in an array. Enforcing that the argument must be a array and not
* a pointer, e.g.
* char *pFoo="foo";
* SAL_N_ELEMENTS(pFoo);
* fails while
* SAL_N_ELEMENTS("foo");
* or
* char aFoo[]="foo";
* SAL_N_ELEMENTS(aFoo);
* pass
*
* Unfortunately if arr is an array of an anonymous class then we need
* C++0x, i.e. see
* http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#757
*/
template <typename T, size_t S> char (&sal_n_array_size( T(&)[S] ))[S];
# define SAL_N_ELEMENTS(arr) (sizeof(sal_n_array_size(arr)))
# else
# define SAL_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0]))
# endif
#endif
#ifndef SAL_BOUND
# define SAL_BOUND(x,l,h) ((x) <= (l) ? (l) : ((x) >= (h) ? (h) : (x)))
#endif
#ifndef SAL_ABS
# define SAL_ABS(a) (((a) < 0) ? (-(a)) : (a))
#endif
#ifndef SAL_STRINGIFY
# define SAL_STRINGIFY_ARG(x) #x
# define SAL_STRINGIFY(x) SAL_STRINGIFY_ARG(x)
#endif
#endif
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