Re: [boost] [gil] gcc fail with simple code

On 03/28/18 22:10, Stefan Seefeld via Boost wrote:

On 28.03.2018 14:48, Christian Henning via Boost wrote:

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I would suggest casting to unsigned first and then performing the math.

I assume this is what you meant:

template <> struct channel_convert_to_unsigned<bits32s> : public std::unary_function { typedef bits32 type; type operator()(bits32s x) const { uint32_t a = static_cast(x); a += (1 << 31);

return static_cast<bits32>(a); } };

Or simply replace `static_cast<bits32>(x+(1<<31))` by `static_cast<bits32>(x)+(1<<31)` (i.e., cast `x` rather than the full expression).

Rather: static_cast<bits32>(x)+(static_cast<bits32>(1)<<31) to make it compatible with older C++ versions.