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André Kempe · Guest

Hi,

I have the following problem with template-parameters under Visual
Studio 6.0.

I have to add an incrementing value to a range of elements, that means I
have an iterator it , it in ]begin;begin+size], and want to add to each
and every element of that range *it += distance(begin,it)*value.

I wrote a simple template function for that, the size is provided as a
template-parameter, since the application is somewhat short of runtime Wink

.

template< unsigned size , class InputIt , class T >
void
incrementing_add( InputIt begin , T value );

I use it for arrays of varying size, and I had a bunch of problems with
that function, since it never worked the way I expected. When I finally
had a look at the assembler-code the compiler produced, I discovered
that when I use 2 for size, and in a later call 3 ( other
template-paramters remain the same ), it produces code that *always*
compares against size 2!

I use I this way, i.e.:
incrementing_add< 3 >( int* , 512 );

Is there something I am missing about explicit template-parameters? Or
have i met just another microsoft-speciality??

Greetings & TIA
André

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kaufmann@cs.uni-potsdam.d · Guest