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Replaced left shift of signed integer values with multiplication to keep the expressions constant according to C++11.

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This commit is contained in:
Andrey Semashev 2014-05-10 18:27:59 +04:00
parent db7bba3259
commit 991539725e
1 changed files with 5 additions and 4 deletions
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9
numeric_traits_test.cpp
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@ -61,18 +61,19 @@ struct complement
typedef complement_traits_aux<Number, size - 1> prev; typedef complement_traits_aux<Number, size - 1> prev;
public: public:
#if defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 0 && __GNUC_PATCHLEVEL__ == 2 #if defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 0 && __GNUC_PATCHLEVEL__ == 2
// GCC 4.0.2 ICEs on these C-style casts // GCC 4.0.2 ICEs on these C-style casts
BOOST_STATIC_CONSTANT(Number, max = BOOST_STATIC_CONSTANT(Number, max =
Number((prev::max) << CHAR_BIT) Number((prev::max) << CHAR_BIT)
+ Number(UCHAR_MAX)); + Number(UCHAR_MAX));
BOOST_STATIC_CONSTANT(Number, min = Number((prev::min) << CHAR_BIT)); BOOST_STATIC_CONSTANT(Number, min = Number((prev::min) << CHAR_BIT));
#else #else
// Avoid left shifting negative integers, use multiplication instead
BOOST_STATIC_CONSTANT(Number, shift = 1u << CHAR_BIT);
BOOST_STATIC_CONSTANT(Number, max = BOOST_STATIC_CONSTANT(Number, max =
Number(Number(prev::max) << CHAR_BIT) Number(Number(prev::max) * shift)
+ Number(UCHAR_MAX)); + Number(UCHAR_MAX));
BOOST_STATIC_CONSTANT(Number, min = Number(Number(prev::min) << CHAR_BIT)); BOOST_STATIC_CONSTANT(Number, min = Number(Number(prev::min) * shift));
#endif #endif
}; };
}; };