1 | /**************************************************************************
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2 | *
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3 | * bitio_mems.c -- Functions for bitio to memory (random access)
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4 | * Copyright (C) 1994 Neil Sharman
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5 | *
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6 | * This program is free software; you can redistribute it and/or modify
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7 | * it under the terms of the GNU General Public License as published by
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8 | * the Free Software Foundation; either version 2 of the License, or
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9 | * (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 | *
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20 | **************************************************************************/
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21 |
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22 | #include "sysfuncs.h"
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23 |
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24 | #include "bitio_m_mems.h"
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25 | #include "bitio_m.h"
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26 |
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27 | int fprintf (FILE *, const char *,...);
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28 |
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29 |
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30 |
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31 | void
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32 | BIO_Mems_Encode_Start (unsigned char *buf, mg_u_long pos,
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33 | mems_bitio_state * bs)
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34 | {
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35 | ENCODE_START (buf, pos)
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36 | ENCODE_PAUSE (*bs)
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37 | }
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38 |
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39 | void
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40 | BIO_Mems_Encode_Done (mems_bitio_state * bs)
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41 | {
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42 | ENCODE_CONTINUE (*bs)
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43 | ENCODE_DONE
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44 | }
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45 |
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46 |
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47 | void
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48 | BIO_Mems_Decode_Start (unsigned char *buf, mg_u_long pos,
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49 | mems_bitio_state * bs)
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50 | {
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51 | DECODE_START (buf, pos)
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52 | DECODE_PAUSE (*bs)
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53 | }
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54 |
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55 |
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56 |
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57 |
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58 | void
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59 | BIO_Mems_Unary_Encode (mg_u_long val, mems_bitio_state * bs,
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60 | mg_u_long *bits)
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61 | {
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62 | ENCODE_CONTINUE (*bs)
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63 | if (bits)
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64 | UNARY_ENCODE_L (val, *bits);
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65 | else
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66 | UNARY_ENCODE (val);
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67 | ENCODE_PAUSE (*bs)
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68 | }
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69 |
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70 |
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71 | mg_u_long
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72 | BIO_Mems_Unary_Decode (mems_bitio_state * bs,
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73 | mg_u_long *bits)
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74 | {
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75 | register mg_u_long val;
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76 | DECODE_CONTINUE (*bs)
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77 | if (bits)
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78 | UNARY_DECODE_L (val, *bits);
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79 | else
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80 | UNARY_DECODE (val);
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81 | DECODE_PAUSE (*bs)
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82 | return (val);
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83 | }
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84 |
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85 |
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86 |
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87 |
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88 |
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89 |
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90 |
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91 | void
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92 | BIO_Mems_Binary_Encode (mg_u_long val, mg_u_long b,
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93 | mems_bitio_state * bs, mg_u_long *bits)
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94 | {
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95 | ENCODE_CONTINUE (*bs)
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96 | if (bits)
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97 | BINARY_ENCODE_L (val, b, *bits);
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98 | else
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99 | BINARY_ENCODE (val, b);
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100 | ENCODE_PAUSE (*bs)
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101 | }
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102 |
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103 |
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104 | mg_u_long
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105 | BIO_Mems_Binary_Decode (mg_u_long b, mems_bitio_state * bs,
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106 | mg_u_long *bits)
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107 | {
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108 | register mg_u_long val;
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109 | DECODE_CONTINUE (*bs)
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110 | if (bits)
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111 | BINARY_DECODE_L (val, b, *bits);
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112 | else
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113 | BINARY_DECODE (val, b);
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114 | DECODE_PAUSE (*bs)
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115 | return (val);
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116 | }
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117 |
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118 |
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119 |
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120 |
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121 |
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122 |
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123 |
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124 | void
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125 | BIO_Mems_Gamma_Encode (mg_u_long val, mems_bitio_state * bs,
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126 | mg_u_long *bits)
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127 | {
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128 | ENCODE_CONTINUE (*bs)
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129 | if (bits)
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130 | GAMMA_ENCODE_L (val, *bits);
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131 | else
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132 | GAMMA_ENCODE (val);
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133 | ENCODE_PAUSE (*bs)
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134 | }
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135 |
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136 |
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137 | mg_u_long
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138 | BIO_Mems_Gamma_Decode (mems_bitio_state * bs, mg_u_long *bits)
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139 | {
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140 | register mg_u_long val;
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141 | DECODE_CONTINUE (*bs)
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142 | if (bits)
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143 | GAMMA_DECODE_L (val, *bits);
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144 | else
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145 | GAMMA_DECODE (val);
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146 | DECODE_PAUSE (*bs)
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147 | return (val);
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148 | }
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149 |
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150 |
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151 |
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152 |
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153 | void
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154 | BIO_Mems_Delta_Encode (mg_u_long val, mems_bitio_state * bs,
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155 | mg_u_long *bits)
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156 | {
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157 | ENCODE_CONTINUE (*bs)
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158 | if (bits)
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159 | DELTA_ENCODE_L (val, *bits);
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160 | else
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161 | DELTA_ENCODE (val);
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162 | ENCODE_PAUSE (*bs)
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163 | }
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164 |
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165 |
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166 | mg_u_long
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167 | BIO_Mems_Delta_Decode (mems_bitio_state * bs, mg_u_long *bits)
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168 | {
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169 | register mg_u_long val;
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170 | DECODE_CONTINUE (*bs)
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171 | if (bits)
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172 | DELTA_DECODE_L (val, *bits);
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173 | else
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174 | DELTA_DECODE (val);
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175 | DECODE_PAUSE (*bs)
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176 | return (val);
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177 | }
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178 |
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179 | void
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180 | BIO_Mems_Elias_Encode (mg_u_long val, mg_u_long b, double s,
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181 | mems_bitio_state * bs, mg_u_long *bits)
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182 | {
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183 | ENCODE_CONTINUE (*bs)
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184 | if (bits)
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185 | ELIAS_ENCODE_L (val, b, s, *bits);
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186 | else
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187 | ELIAS_ENCODE (val, b, s);
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188 | ENCODE_PAUSE (*bs)
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189 | }
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190 |
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191 |
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192 | mg_u_long
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193 | BIO_Mems_Elias_Decode (mg_u_long b, double s,
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194 | mems_bitio_state * bs, mg_u_long *bits)
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195 | {
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196 | register mg_u_long val;
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197 | DECODE_CONTINUE (*bs)
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198 | if (bits)
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199 | ELIAS_DECODE_L (val, b, s, *bits);
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200 | else
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201 | ELIAS_DECODE (val, b, s);
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202 | DECODE_PAUSE (*bs)
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203 | return (val);
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204 | }
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205 |
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206 | void
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207 | BIO_Mems_Bblock_Encode (mg_u_long val, mg_u_long b,
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208 | mems_bitio_state * bs, mg_u_long *bits)
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209 | {
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210 | ENCODE_CONTINUE (*bs)
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211 | if (bits)
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212 | BBLOCK_ENCODE_L (val, b, *bits);
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213 | else
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214 | BBLOCK_ENCODE (val, b);
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215 | ENCODE_PAUSE (*bs)
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216 | }
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217 |
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218 |
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219 | mg_u_long
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220 | BIO_Mems_Bblock_Decode (mg_u_long b, mems_bitio_state * bs,
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221 | mg_u_long *bits)
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222 | {
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223 | register mg_u_long val;
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224 | DECODE_CONTINUE (*bs)
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225 | if (bits)
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226 | BBLOCK_DECODE_L (val, b, *bits);
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227 | else
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228 | BBLOCK_DECODE (val, b);
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229 | DECODE_PAUSE (*bs)
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230 | return (val);
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231 | }
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232 |
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233 | void
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234 | BIO_Mems_Decode_Seek (mg_u_long pos, mems_bitio_state * bs)
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235 | {
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236 | DECODE_CONTINUE (*bs)
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237 | DECODE_SEEK (pos);
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238 | DECODE_PAUSE (*bs)
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239 | }
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240 |
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241 | void
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242 | BIO_Mems_Encode_Seek (mg_u_long pos, mems_bitio_state * bs)
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243 | {
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244 | ENCODE_CONTINUE (*bs)
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245 | ENCODE_SEEK (pos);
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246 | ENCODE_PAUSE (*bs)
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247 | }
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