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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef INCLUDED_TOOLS_HELPERS_HXX
#define INCLUDED_TOOLS_HELPERS_HXX
#include <sal/config.h>
#include <sal/types.h>
#include <o3tl/safeint.hxx>
#include <cassert>
#include <type_traits>
template<typename T>
inline
typename std::enable_if<
std::is_signed<T>::value || std::is_floating_point<T>::value, long >::type
MinMax(T nVal, long nMin, long nMax)
{
assert(nMin <= nMax);
return nVal >= nMin
? (nVal <= nMax ? static_cast<long>(nVal) : nMax) : nMin;
}
template<typename T>
inline
typename std::enable_if<
std::is_unsigned<T>::value, long >::type
MinMax(T nVal, long nMin, long nMax)
{
assert(nMin <= nMax);
return nMax < 0
? nMax
: ((nMin < 0 || nVal >= static_cast<unsigned long>(nMin))
? (nVal <= static_cast<unsigned long>(nMax)
? static_cast<long>(nVal) : nMax)
: nMin);
}
inline sal_uInt32 AlignedWidth4Bytes(sal_uInt32 nWidthBits)
{
if (nWidthBits > SAL_MAX_UINT32 - 31)
nWidthBits = SAL_MAX_UINT32;
else
nWidthBits += 31;
return (nWidthBits >> 5) << 2;
}
inline long FRound( double fVal )
{
return fVal > 0.0 ? static_cast<long>( fVal + 0.5 ) : -static_cast<long>( -fVal + 0.5 );
}
// return (n >= 0)? (n*72+63)/127: (n*72-63)/127;
inline sal_Int64 sanitiseMm100ToTwip(sal_Int64 n)
{
if (n >= 0)
{
if (o3tl::checked_multiply<sal_Int64>(n, 72, n) || o3tl::checked_add<sal_Int64>(n, 63, n))
n = SAL_MAX_INT64;
}
else
{
if (o3tl::checked_multiply<sal_Int64>(n, 72, n) || o3tl::checked_sub<sal_Int64>(n, 63, n))
n = SAL_MIN_INT64;
}
return n / 127;
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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