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1 // tc-inlines.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 // Just a coupla more helper functions. |
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25 |
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26 static inline int |
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27 tree_to_mat_idx (double x) |
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28 { |
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29 if (x > 0) |
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30 return ((int) (x + 0.5) - 1); |
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31 else |
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32 return ((int) (x - 0.5) - 1); |
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33 } |
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34 |
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35 static inline int |
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36 range_max_check (int i, int imax) |
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37 { |
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38 i++; |
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39 if (i > imax) |
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40 { |
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41 error ("matrix index = %d exceeds maximum dimension = %d", i, imax); |
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42 jump_to_top_level (); |
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43 } |
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44 } |
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45 |
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46 static inline int |
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47 range_max_check (int i, int j, int nr, int nc) |
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48 { |
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49 i++; |
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50 if (i > nr) |
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51 { |
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52 error ("matrix row index = %d exceeds maximum row dimension = %d", |
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53 i, nr); |
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54 jump_to_top_level (); |
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55 } |
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56 |
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57 j++; |
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58 if (j > nc) |
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59 { |
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60 error ("matrix column index = %d exceeds maximum column dimension = %d", |
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61 j, nc); |
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62 jump_to_top_level (); |
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63 } |
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64 } |
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65 |
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66 static inline int |
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67 indexed_assign_conforms (int lhs_nr, int lhs_nc, int rhs_nr, int rhs_nc) |
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68 { |
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69 return (lhs_nr == rhs_nr && lhs_nc == rhs_nc); |
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70 } |
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71 |
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72 static inline int |
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73 is_zero_one (const Range& r) |
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74 { |
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75 double b = r.base (); |
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76 double l = r.limit (); |
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77 return (NINT (b) == 0 && NINT (l) == 1 && r.nelem () == 2); |
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78 } |
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79 |
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80 static inline void |
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81 index_check (int i, char *rc) |
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82 { |
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83 if (i < 0) |
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84 { |
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85 error ("invalid %s index = %d", rc, i+1); |
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86 jump_to_top_level (); |
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87 } |
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88 } |
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89 |
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90 static inline void |
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91 index_check (const Range& r, int& max_val, char *rc) |
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92 { |
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93 double b = r.base (); |
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94 int ib = tree_to_mat_idx (b); |
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95 |
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96 if (r.nelem () < 1) |
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97 { |
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98 error ("range invalid as %s index", rc); |
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99 jump_to_top_level (); |
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100 } |
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101 |
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102 if (ib < 0) |
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103 { |
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104 error ("invalid %s index = %d", rc, ib+1); |
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105 jump_to_top_level (); |
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106 } |
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107 |
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108 double lim = r.limit (); |
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109 max_val = tree_to_mat_idx (lim); |
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110 } |
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111 |
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112 static inline void |
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113 index_check (const Range& r, char *rc) |
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114 { |
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115 int max_val; |
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116 index_check (r, max_val, rc); |
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117 } |
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118 |
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119 static inline int |
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120 fortran_row (int i, int nr) |
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121 { |
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122 int r; |
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123 r = i % nr; |
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124 if (r == 0) |
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125 r = nr; |
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126 return r; |
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127 } |
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128 |
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129 static inline int |
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130 fortran_column (int i, int nr) |
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131 { |
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132 int c; |
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133 int r; |
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134 r = fortran_row (i, nr); |
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135 c = (i - r) / nr + 1; |
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136 return c; |
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137 } |
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138 |
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139 static inline int |
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140 valid_scalar_indices (tree_constant *args, int nargs) |
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141 { |
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142 int valid = args != NULL_TREE_CONST |
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143 && ((nargs == 3 && args[2].valid_as_scalar_index () |
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144 && args[1].valid_as_scalar_index ()) |
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145 || (nargs == 2 && args[1].valid_as_scalar_index ())); |
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146 |
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147 return valid; |
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148 } |
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149 |
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150 /* |
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151 ;;; Local Variables: *** |
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152 ;;; mode: C++ *** |
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153 ;;; page-delimiter: "^/\\*" *** |
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154 ;;; End: *** |
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155 */ |
