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1996-09-28
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113 lines
# 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