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sal
macros.h
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef _SAL_MACROS_H_
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#define _SAL_MACROS_H_
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#include <stddef.h>
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#ifndef SAL_MAX
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# define SAL_MAX(a,b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef SAL_MIN
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# define SAL_MIN(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#ifndef SAL_FIELDOFFSET
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# define SAL_FIELDOFFSET(type, field) ((sal_Int32)(&((type *)16)->field) - 16)
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#endif
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#ifndef SAL_N_ELEMENTS
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# if defined(__cplusplus) && ( defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L )
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/*
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* Magic template to calculate at compile time the number of elements
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* in an array. Enforcing that the argument must be a array and not
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* a pointer, e.g.
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* char *pFoo="foo";
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* SAL_N_ELEMENTS(pFoo);
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* fails while
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* SAL_N_ELEMENTS("foo");
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* or
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* char aFoo[]="foo";
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* SAL_N_ELEMENTS(aFoo);
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* pass
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*
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* Unfortunately if arr is an array of an anonymous class then we need
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* C++0x, i.e. see
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* http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#757
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*/
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template
<
typename
T,
size_t
S> char (&sal_n_array_size( T(&)[S] ))[S];
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# define SAL_N_ELEMENTS(arr) (sizeof(sal_n_array_size(arr)))
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# else
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# define SAL_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0]))
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# endif
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#endif
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#ifndef SAL_BOUND
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# define SAL_BOUND(x,l,h) ((x) <= (l) ? (l) : ((x) >= (h) ? (h) : (x)))
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#endif
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#ifndef SAL_ABS
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# define SAL_ABS(a) (((a) < 0) ? (-(a)) : (a))
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#endif
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#ifndef SAL_STRINGIFY
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# define SAL_STRINGIFY_ARG(x) #x
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# define SAL_STRINGIFY(x) SAL_STRINGIFY_ARG(x)
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#endif
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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