Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zint/backend/bc412.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 /* bc412.c - Handles IBM BC412 (SEMI T1-95) symbology */
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2 /*
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3 libzint - the open source barcode library
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4 Copyright (C) 2022-2024 Robin Stuart <rstuart114@gmail.com>
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5
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6 Redistribution and use in source and binary forms, with or without
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7 modification, are permitted provided that the following conditions
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8 are met:
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9
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10 1. Redistributions of source code must retain the above copyright
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11 notice, this list of conditions and the following disclaimer.
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12 2. Redistributions in binary form must reproduce the above copyright
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13 notice, this list of conditions and the following disclaimer in the
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14 documentation and/or other materials provided with the distribution.
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15 3. Neither the name of the project nor the names of its contributors
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16 may be used to endorse or promote products derived from this software
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17 without specific prior written permission.
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18
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19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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20 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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22 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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23 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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24 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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25 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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26 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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27 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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28 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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29 SUCH DAMAGE.
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30 */
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31 /* SPDX-License-Identifier: BSD-3-Clause */
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32
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33 /* A little information about this symbology can be found at
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34 * https://barcodeguide.seagullscientific.com/Content/Symbologies/BC412.htm
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35 *
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36 * Partial specification at
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37 * https://www.wdfxw.net/doc80487518.htm
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38 *
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39 * Checked against the encoder at
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40 * https://www.barcodesoft.com/en/semi/semi-t1-95-bc-412-code */
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42 #include <stdio.h>
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43 #include "common.h"
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45 static const char BROMINE[] = "0R9GLVHA8EZ4NTS1J2Q6C7DYKBUIX3FWP5M";
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47 static const char BC412Table[35][8] = {
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48 {'1','1','1','1','1','1','1','5'}, {'1','3','1','1','1','2','1','2'},
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49 {'1','1','1','3','1','1','1','3'}, {'1','2','1','1','1','2','1','3'},
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50 {'1','2','1','2','1','3','1','1'}, {'1','3','1','3','1','1','1','1'},
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51 {'1','2','1','1','1','3','1','2'}, {'1','1','1','3','1','2','1','2'},
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52 {'1','1','1','2','1','4','1','1'}, {'1','1','1','5','1','1','1','1'},
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53 {'1','5','1','1','1','1','1','1'}, {'1','1','1','1','1','5','1','1'},
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54 {'1','2','1','3','1','2','1','1'}, {'1','3','1','2','1','1','1','2'},
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55 {'1','3','1','1','1','3','1','1'}, {'1','1','1','1','1','2','1','4'},
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56 {'1','2','1','2','1','1','1','3'}, {'1','1','1','1','1','3','1','3'},
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57 {'1','3','1','1','1','1','1','3'}, {'1','1','1','2','1','2','1','3'},
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58 {'1','1','1','4','1','1','1','2'}, {'1','1','1','2','1','3','1','2'},
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59 {'1','1','1','4','1','2','1','1'}, {'1','4','1','2','1','1','1','1'},
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60 {'1','2','1','2','1','2','1','2'}, {'1','1','1','3','1','3','1','1'},
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61 {'1','3','1','2','1','2','1','1'}, {'1','2','1','1','1','4','1','1'},
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62 {'1','4','1','1','1','2','1','1'}, {'1','1','1','1','1','4','1','2'},
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63 {'1','2','1','1','1','1','1','4'}, {'1','4','1','1','1','1','1','2'},
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64 {'1','2','1','4','1','1','1','1'}, {'1','1','1','2','1','1','1','4'},
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65 {'1','2','1','3','1','1','1','2'}
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66 };
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67
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68 INTERNAL int bc412(struct zint_symbol *symbol, unsigned char source[], int length) { /* IBM BC412 */
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69 unsigned char padded_source[20];
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70 int posns[35];
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71 int i, counter_odd = 0, counter_even = 0, check_sum = 0;
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72 char dest[293]; /* 2 + (36 * 8) + 3 */
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73 char *d = dest;
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74 int error_number = 0;
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75
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76 if (length > 18) {
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77 return errtxtf(ZINT_ERROR_TOO_LONG, symbol, 790, "Input length %d too long (maximum 18)", length);
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78 }
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79 if (length < 7) {
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80 return errtxtf(ZINT_ERROR_TOO_LONG, symbol, 792, "Input length %d too short (minimum 7)", length);
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81 }
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82 to_upper(source, length);
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83
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84 padded_source[0] = source[0];
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85 padded_source[1] = '0';
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86
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87 for (i = 2; i <= length; i++) {
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88 padded_source[i] = source[i - 1];
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89 }
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90 padded_source[length + 1] = 0;
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91
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92 if ((i = not_sane_lookup(BROMINE, 35, padded_source, length + 1, posns))) {
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93 return errtxtf(ZINT_ERROR_INVALID_DATA, symbol, 791,
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94 "Invalid character at position %d in input (alphanumerics only, excluding \"O\")", i - 1);
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95 }
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parents:
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96
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parents:
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97 for (i = 0; i <= length; i++) {
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98 if (i % 2) {
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99 counter_even += posns[i];
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100 } else {
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101 counter_odd += posns[i];
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102 }
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103 }
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parents:
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104
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105 counter_odd %= 35;
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106 counter_even %= 35;
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107
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108 /* Check digit */
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109 check_sum = counter_odd + (2 * counter_even);
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110 check_sum %= 35;
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parents:
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111 check_sum *= 17;
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parents:
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112 check_sum %= 35;
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parents:
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113
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114 if (symbol->debug & ZINT_DEBUG_PRINT) {
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parents:
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115 printf("BC412 check: %c\n", BROMINE[check_sum]);
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parents:
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116 }
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parents:
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117
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parents:
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118 padded_source[1] = BROMINE[check_sum];
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parents:
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119 posns[1] = check_sum;
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parents:
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120
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parents:
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121 /* Start character */
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parents:
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122 memcpy(d, "12", 2);
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parents:
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123 d += 2;
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parents:
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124
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parents:
diff changeset
125 for (i = 0; i <= length; i++, d += 8) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
126 memcpy(d, BC412Table[posns[i]], 8);
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parents:
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127 }
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parents:
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128
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parents:
diff changeset
129 /* Stop character */
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parents:
diff changeset
130 memcpy(d, "111", 3);
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parents:
diff changeset
131 d += 3;
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parents:
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132
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parents:
diff changeset
133 expand(symbol, dest, d - dest);
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parents:
diff changeset
134 ustrcpy(symbol->text, padded_source);
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parents:
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135
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parents:
diff changeset
136 if (symbol->output_options & COMPLIANT_HEIGHT) {
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
137 /* SEMI T1-95 Table 1 "Module" (Character) Height 2mm ± 0.025mm, using Module Spacing 0.12mm ± 0.025mm as
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
138 X-dimension */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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139 const float min_height = 13.6206894f; /* 1.975 / 0.145 */
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parents:
diff changeset
140 const float default_height = 16.666666f; /* 2.0 / 0.12 */
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parents:
diff changeset
141 const float max_height = 21.3157902f; /* 2.025 / 0.095 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
142 error_number = set_height(symbol, min_height, default_height, max_height, 0 /*no_errtxt*/);
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parents:
diff changeset
143 } else {
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parents:
diff changeset
144 /* Using compliant height as default as no backwards compatibility to consider */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
145 const float default_height = 16.666666f; /* 2.0 / 0.12 */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
146 (void) set_height(symbol, 0.0f, default_height, 0.0f, 1 /*no_errtxt*/);
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parents:
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147 }
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parents:
diff changeset
148
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parents:
diff changeset
149 return error_number;
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parents:
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150 }
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parents:
diff changeset
151
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parents:
diff changeset
152 /* vim: set ts=4 sw=4 et : */