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- # Copyright (C) 1993, 1994, 1995 John W. Eaton
- #
- # This file is part of Octave.
- #
- # Octave is free software; you can redistribute it and/or modify it
- # under the terms of the GNU General Public License as published by the
- # Free Software Foundation; either version 2, or (at your option) any
- # later version.
- #
- # Octave is distributed in the hope that it will be useful, but WITHOUT
- # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- # for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with Octave; see the file COPYING. If not, write to the Free
- # Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- function perror (name, err)
-
- # usage: perror (name, err)
- #
- # Print an error message for error number `err' from function "name".
- #
- # Messages correspond to the following subroutine versions:
- #
- # npsol : 4.0
- # qpsol : 3.2
-
- if (nargin != 2)
- usage ("perror (name, err)");
- endif
-
- if (! isstr (name))
- error ("perror: first argument must be a string");
- endif
-
- if (! is_scalar (err))
- error ("perror: second argument must be a scalar");
- endif
-
- if (strcmp (name, "fsolve"))
-
- if (err == -2)
- printf ("input error\n");
- elseif (err == -1)
- printf ("error encountered in user-supplied function\n");
- elseif (err == 1)
- printf ("solution converged to requested tolerance\n");
- elseif (err == 4)
- printf ("iteration limit exceeded\n");
- elseif (err == 3)
- printf ("iteration is not making good progress\n");
- else
- error ("perror: unrecognized error code for fsolve");
- endif
-
- elseif (strcmp (name, "npsol"))
-
- if (err == 0)
- printf ("optimal solution found\n");
- elseif (err == 1)
- printf ("weak local solution found\n");
- elseif (err == 2)
- printf ("no feasible point for linear constraints and bounds\n");
- elseif (err == 3)
- printf ("no feasible point found for nonlinear constraints\n");
- elseif (err == 4)
- printf ("iteration limit reached\n");
- elseif (err == 6)
- printf ("current point cannot be improved upon\n");
- elseif (err == 7)
- printf ("user-supplied derivatives appear to be incorrect\n");
- elseif (err == 9)
- printf ("internal error: invalid input parameter\n");
- else
- error ("perror: unrecognized error code for npsol");
- endif
-
- elseif (strcmp (name, "qpsol"))
-
- if (err == 0)
- printf ("optimal solution found\n");
- elseif (err == 1)
- printf ("weak local solution found\n");
- elseif (err == 2)
- printf ("solution appears to be unbounded\n");
- elseif (err == 3)
- printf ("solution appears optimal, but optimality can't be verified\n");
- elseif (err == 4)
- printf ("iterates of the QP phase appear to be cycling\n");
- elseif (err == 5)
- printf ("iteration limit reached during QP phase\n");
- elseif (err == 6)
- printf ("no feasible point found during LP phase\n");
- elseif (err == 7)
- printf ("iterates of the LP phase appear to be cycling\n");
- elseif (err == 8)
- printf ("iteration limit reached during LP phase\n");
- elseif (err == 9)
- printf ("internal error: invalid input parameter\n");
- else
- error ("perror: unrecognized error code for qpsol");
- endif
-
- else
-
- error ("perror: unrecognized function name");
-
- endif
-
- endfunction
-