Re: [Boost-users] NT2 and Boost.SIMD beta 2 available

On 15/10/13 10:36, Olivier Tristan wrote:

Looks great.

However, using the simple Tutorial Hello World from the documentation on VS 2012 (update 3) with boost 1.54 and this beta 2

#include <iostream> #include #include #include #include

int main(int argc, const char *argv[]) { boost::simd::pack<float> res; boost::simd::pack<float> u(10); boost::simd::pack<float> r(11,11,11,11);

res = (u + r) * 2;

std::cout << res << std::endl;

return 0; }

Hi, there was a breaking change in the beta 2 and the tutorial wasn't updated, not sure if we mentioned it in the changelog. Boost.SIMD moved to stronger typing rules, so since (u + r) is logically a pack<float> you cannot multiply it by an int (2), you must multiply it by a float too (2.f). So you must write res = (u + r) * 2.f; The fix has been pushed to the master branch.

leads to this issue:

Error 3 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\otristan\code\boost\boost\simd\operator\functions\simd\common\preprocessed\map.hpp 59 1 test Error 9 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\otristan\code\boost\boost\simd\operator\specific\preprocessed\common.hpp 88 1 test Error 6 error C2955: 'boost::simd::meta::vector_of' : use of class template requires template argument list c:\users\otristan\code\boost\boost\simd\operator\functions\simd\common\preprocessed\map.hpp 64 1 test Error 5 error C2923: 'boost::simd::meta::vector_of' : 'rtype' is not a valid template type argument for parameter 'T' c:\users\otristan\code\boost\boost\simd\operator\functions\simd\common\preprocessed\map.hpp 64 1 test Error 11 error C2868: 'boost::simd::ext::implement::splat_or_map<B>::type' : illegal syntax for using-declaration; expected qualified-name c:\users\otristan\code\boost\boost\simd\operator\specific\preprocessed\common.hpp 88 1 test Error 10 error C2602: 'boost::simd::ext::implement::splat_or_map<B>::type' is not a member of a base class of 'boost::simd::ext::implement::splat_or_map<B>' c:\users\otristan\code\boost\boost\simd\operator\specific\preprocessed\common.hpp 88 1 test Error 8 error C2146: syntax error : missing ';' before identifier 'type' c:\users\otristan\code\boost\boost\simd\operator\specific\preprocessed\common.hpp 88 1 test Error 2 error C2146: syntax error : missing ';' before identifier 'rtype' c:\users\otristan\code\boost\boost\simd\operator\functions\simd\common\preprocessed\map.hpp 59 1 test Error 4 error C2065: 'rtype' : undeclared identifier c:\users\otristan\code\boost\boost\simd\operator\functions\simd\common\preprocessed\map.hpp 63 1 test Error 1 error C2039: 'type' : is not a member of 'boost::dispatch::meta::result_of<Sig>' c:\users\otristan\code\boost\boost\simd\operator\functions\simd\common\preprocessed\map.hpp 58 1 test Error 7 error C2039: 'type' : is not a member of 'boost::dispatch::meta::call<Sig>' c:\users\otristan\code\boost\boost\simd\operator\specific\preprocessed\common.hpp 87 1 test

Is that the full error message? It's not very explicit. Making error messages better is something we've been working on, and apparently we still have some way to go.