(pindex[atom].functionType() == F_VSITE4FD ) ||
(pindex[atom].functionType() == F_VSITE4FDN ) );
bool bThisOUT = ( (pindex[atom].functionType() == F_VSITE3OUT) &&
- ((interaction_function[cftype].flags & IF_CONSTRAINT) != 0u) );
+ ((interaction_function[cftype].flags & IF_CONSTRAINT) != 0U) );
bAllFD = bAllFD && bThisFD;
if (bThisFD || bThisOUT)
{