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1 # Copyright (C) 1993, 1994, 1995 John W. Eaton |
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2 # |
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3 # This file is part of Octave. |
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4 # |
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5 # Octave is free software; you can redistribute it and/or modify it |
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6 # under the terms of the GNU General Public License as published by the |
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7 # Free Software Foundation; either version 2, or (at your option) any |
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8 # later version. |
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9 # |
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10 # Octave is distributed in the hope that it will be useful, but WITHOUT |
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11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 # for more details. |
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14 # |
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15 # You should have received a copy of the GNU General Public License |
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16 # along with Octave; see the file COPYING. If not, write to the Free |
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17 # Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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18 |
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4
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19 function perror (name, err) |
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20 |
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21 # usage: perror (name, err) |
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22 # |
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23 # Print an error message for error number `err' from function "name". |
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24 # |
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25 # Messages correspond to the following subroutine versions: |
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26 # |
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27 # npsol : 4.0 |
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28 # qpsol : 3.2 |
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29 |
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30 if (nargin != 2) |
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31 usage ("perror (name, err)"); |
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4
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32 endif |
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33 |
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34 if (! isstr (name)) |
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35 error ("perror: first argument must be a string"); |
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36 endif |
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37 |
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38 if (! is_scalar (err)) |
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39 error ("perror: second argument must be a scalar"); |
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40 endif |
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41 |
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42 if (strcmp (name, "fsolve")) |
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43 |
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44 if (err == -2) |
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4
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45 printf ("input error\n"); |
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46 elseif (err == -1) |
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47 printf ("error encountered in user-supplied function\n"); |
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48 elseif (err == 1) |
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4
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49 printf ("solution converged to requested tolerance\n"); |
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107
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50 elseif (err == 4) |
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4
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51 printf ("iteration limit exceeded\n"); |
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52 elseif (err == 3) |
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4
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53 printf ("iteration is not making good progress\n"); |
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54 else |
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55 error ("perror: unrecognized error code for fsolve"); |
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56 endif |
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57 |
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58 elseif (strcmp (name, "npsol")) |
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59 |
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60 if (err == 0) |
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61 printf ("optimal solution found\n"); |
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62 elseif (err == 1) |
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63 printf ("weak local solution found\n"); |
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64 elseif (err == 2) |
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65 printf ("no feasible point for linear constraints and bounds\n"); |
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66 elseif (err == 3) |
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67 printf ("no feasible point found for nonlinear constraints\n"); |
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68 elseif (err == 4) |
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69 printf ("iteration limit reached\n"); |
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70 elseif (err == 6) |
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71 printf ("current point cannot be improved upon\n"); |
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72 elseif (err == 7) |
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73 printf ("user-supplied derivatives appear to be incorrect\n"); |
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74 elseif (err == 9) |
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75 printf ("internal error: invalid input parameter\n"); |
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76 else |
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77 error ("perror: unrecognized error code for npsol"); |
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78 endif |
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79 |
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80 elseif (strcmp (name, "qpsol")) |
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81 |
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82 if (err == 0) |
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83 printf ("optimal solution found\n"); |
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84 elseif (err == 1) |
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85 printf ("weak local solution found\n"); |
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86 elseif (err == 2) |
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87 printf ("solution appears to be unbounded\n"); |
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88 elseif (err == 3) |
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89 printf ("solution appears optimal, but optimality can't be verified\n"); |
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90 elseif (err == 4) |
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91 printf ("iterates of the QP phase appear to be cycling\n"); |
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92 elseif (err == 5) |
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93 printf ("iteration limit reached during QP phase\n"); |
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94 elseif (err == 6) |
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95 printf ("no feasible point found during LP phase\n"); |
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96 elseif (err == 7) |
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97 printf ("iterates of the LP phase appear to be cycling\n"); |
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98 elseif (err == 8) |
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99 printf ("iteration limit reached during LP phase\n"); |
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100 elseif (err == 9) |
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101 printf ("internal error: invalid input parameter\n"); |
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102 else |
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103 error ("perror: unrecognized error code for qpsol"); |
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104 endif |
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105 |
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106 else |
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107 |
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108 error ("perror: unrecognized function name"); |
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109 |
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110 endif |
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111 |
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112 endfunction |
