:) I am glad to have enterained you. My end game is to get people to write int const delta = (cp[IPOPT_OLEN] - 1); instead of repeating expressions like th

:) I am glad to have enterained you. My end game is to get people to write int const delta = (cp[IPOPT_OLEN] - 1); instead of repeating expressions like this: (cp[IPOPT_OLEN] - 1) and adding variants elsewhere like this: cp[IPOPT_OLEN]. It's confusing and causes bugs. Naming things helps and costs nothing.