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ENH: add PackedList::unpack() method

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- allows for simpler unpacking of a full list, or list range into any
  sufficiently large integral type.

  For example,
    processorPolyPatch pp = ...;

    UOPstream toNbr(pp.neighbProcNo(), pBufs);
    toNbr << faceValues.unpack<char>(pp.range());
This commit is contained in:
Mark Olesen
2018-08-01 12:48:35 +02:00
parent 8917b94444
commit 35facb8208
7 changed files with 148 additions and 33 deletions
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22
applications/test/PackedList/Test-PackedList.C
View File

@ -38,30 +38,30 @@ Description
using namespace Foam;
template<unsigned nBits>
template<unsigned Width>
inline void reportInfo()
{
const unsigned offset = PackedList<nBits>::elem_per_block;
const unsigned offset = PackedList<Width>::elem_per_block;
unsigned useSHL = ((1u << (nBits * offset)) - 1);
unsigned useSHR = (~0u >> (sizeof(unsigned)*CHAR_BIT - nBits * offset));
unsigned useSHL = ((1u << (Width * offset)) - 1);
unsigned useSHR = (~0u >> (sizeof(unsigned)*CHAR_BIT - Width * offset));
Info<< nl
<< "PackedList<" << nBits << ">" << nl
<< " max_value: " << PackedList<nBits>::max_value << nl
<< " packing: " << PackedList<nBits>::elem_per_block << nl
<< " utilization: " << (nBits * offset) << nl;
<< "PackedList<" << Width << ">" << nl
<< " max_value: " << PackedList<Width>::max_value << nl
<< " packing: " << PackedList<Width>::elem_per_block << nl
<< " utilization: " << (Width * offset) << nl;
Info<< " Masking:" << nl
<< " shift << "
<< unsigned(nBits * offset) << nl
<< unsigned(Width * offset) << nl
<< " shift >> "
<< unsigned((sizeof(unsigned)*CHAR_BIT) - nBits * offset)
<< unsigned((sizeof(unsigned)*CHAR_BIT) - Width * offset)
<< nl;
hex(Info);
Info<< " maskLower: "
<< PackedList<nBits>::mask_lower(PackedList<nBits>::elem_per_block)
<< PackedList<Width>::mask_lower(PackedList<Width>::elem_per_block)
<< nl
<< " useSHL: " << useSHL << nl
<< " useSHR: " << useSHR << nl;

12
applications/test/PackedList1/Test-PackedList1.C
View File

@ -118,6 +118,18 @@ int main(int argc, char *argv[])
list1.set(14, 2);
report(list1);
Info<< "values() : " << flatOutput(list1.unpack<char>()) << nl
<< "values(5,8) : " << flatOutput(list1.unpack<char>(labelRange(5,8)))
<< nl;
{
labelList locations({-5, -2, 2, 1, 8});
Info<< "values at " << flatOutput(locations) << " = "
<< flatOutput(list1.unpack<char>(locations))
<< nl;
}
Info<< "\ntest operator== between references\n";
if (list1[1] == list1[8])
{