[Ipopt-tickets] [Ipopt] #186: Preprocessor flag to use long ints in MA57 interface

[Ipopt]

#186: Preprocessor flag to use long ints in MA57 interface
--------------------------+-------------------------
  Reporter:  guest        |      Owner:  ipopt-team
      Type:  enhancement  |     Status:  closed
  Priority:  normal       |  Component:  Ipopt
   Version:               |   Severity:  normal
Resolution:  fixed        |   Keywords:  MA57 Matlab
--------------------------+-------------------------

Comment (by guest):

 Since size_t is unsigned, it won't work properly for ma57int. See lines
 638, 664, 691 of IpMa57TSolverInterface.cpp, wd_info_ is a ma57int array
 with possibly negative values. Maybe ssize_t or ptrdiff_t could serve the
 same changes-with-architecture function with a signed type?

 I'm also getting compiler errors when I try to use -DFUNNY_MA57_FINT, it
 chokes on the const_cast at compile time when sizeof(ma57int) !=
 sizeof(Index), not realizing it won't go down that branch.

 Ipopt/src/Algorithm/LinearSolvers/IpMa57TSolverInterface.cpp:560:48:
 error: invalid const_cast from type 'const Index* {aka const int*}' to
 type 'ma57int* {aka long unsigned int*}'

 -Tony

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Ticket URL: <https://projects.coin-or.org/ticket/186#comment:2>
Ipopt <http://projects.coin-or.org/Ipopt>
Interior-point optimizer for nonlinear programs.