void sampleCompTopSimple(Real *topVertex, vertexArray *leftChain, Int leftStartIndex, vertexArray *rightChain, Int rightStartIndex, gridBoundaryChain *leftGridChain, gridBoundaryChain *rightGridChain, Int gridIndex1, Int up_leftCornerWhere, Int up_leftCornerIndex, Int up_rightCornerWhere, Int up_rightCornerIndex, primStream *pStream)
void sampleCompTop(Real *topVertex, vertexArray *leftChain, Int leftStartIndex, vertexArray *rightChain, Int rightStartIndex, gridBoundaryChain *leftGridChain, gridBoundaryChain *rightGridChain, Int gridIndex1, Int up_leftCornerWhere, Int up_leftCornerIndex, Int up_rightCornerWhere, Int up_rightCornerIndex, primStream *pStream)