1 | // $Id: vector.cc 1101 2008-02-18 04:43:14Z peter $ |
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2 | |
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3 | /* |
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4 | Copyright (C) 2003 Daniel Dalevi, Peter Johansson |
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5 | Copyright (C) 2004 Jari Häkkinen, Peter Johansson |
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6 | Copyright (C) 2005, 2006 Jari Häkkinen, Markus Ringnér, Peter Johansson |
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7 | Copyright (C) 2007 Jari Häkkinen, Peter Johansson |
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8 | |
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9 | This file is part of the yat library, http://trac.thep.lu.se/yat |
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10 | |
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11 | The yat library is free software; you can redistribute it and/or |
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12 | modify it under the terms of the GNU General Public License as |
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13 | published by the Free Software Foundation; either version 2 of the |
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14 | License, or (at your option) any later version. |
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15 | |
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16 | The yat library is distributed in the hope that it will be useful, |
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17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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19 | General Public License for more details. |
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20 | |
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21 | You should have received a copy of the GNU General Public License |
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22 | along with this program; if not, write to the Free Software |
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23 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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24 | 02111-1307, USA. |
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25 | */ |
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26 | |
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27 | #include "vector.h" |
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28 | #include "matrix.h" |
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29 | #include "utility.h" |
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30 | #include "yat/random/random.h" |
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31 | |
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32 | #include <algorithm> |
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33 | #include <cassert> |
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34 | #include <cmath> |
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35 | #include <iostream> |
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36 | #include <sstream> |
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37 | #include <utility> |
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38 | #include <vector> |
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39 | |
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40 | namespace theplu { |
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41 | namespace yat { |
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42 | namespace utility { |
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43 | |
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44 | |
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45 | vector::vector(void) |
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46 | : VectorMutable() |
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47 | { |
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48 | } |
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49 | |
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50 | |
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51 | vector::vector(size_t n, double init_value) |
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52 | : VectorMutable(gsl_vector_alloc(n)) |
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53 | { |
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54 | if (!vec_) |
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55 | throw utility::GSL_error("vector::vector failed to allocate memory"); |
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56 | assert(const_vec_); |
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57 | all(init_value); |
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58 | } |
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59 | |
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60 | |
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61 | vector::vector(const vector& other) |
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62 | : VectorMutable(create_gsl_vector_copy(other)) |
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63 | { |
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64 | } |
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65 | |
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66 | |
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67 | vector::vector(const VectorBase& other) |
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68 | : VectorMutable(create_gsl_vector_copy(other)) |
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69 | { |
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70 | } |
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71 | |
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72 | |
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73 | vector::vector(std::istream& is, char sep) |
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74 | throw (utility::IO_error, std::exception) |
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75 | : VectorMutable() |
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76 | { |
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77 | // read the data file and store in stl vectors (dynamically |
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78 | // expandable) |
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79 | std::vector<std::vector<double> > data_matrix; |
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80 | u_int nof_columns=0; |
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81 | u_int nof_rows=0; |
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82 | std::string line; |
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83 | while(getline(is, line, '\n')) { |
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84 | // Empty lines |
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85 | if (!line.size()) |
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86 | continue; |
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87 | nof_rows++; |
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88 | |
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89 | std::vector<double> v; |
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90 | std::string element; |
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91 | std::stringstream ss(line); |
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92 | bool ok=true; |
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93 | while(ok) { |
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94 | if(sep=='\0') |
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95 | ok=(ss>>element); |
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96 | else |
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97 | ok=getline(ss, element, sep); |
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98 | if(!ok) |
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99 | break; |
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100 | |
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101 | if(utility::is_double(element)) { |
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102 | v.push_back(atof(element.c_str())); |
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103 | } |
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104 | else if (!element.size() || utility::is_nan(element)) { |
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105 | v.push_back(std::numeric_limits<double>::quiet_NaN()); |
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106 | } |
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107 | else { |
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108 | std::stringstream ss("Warning: '"); |
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109 | ss << element << "' is not a double."; |
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110 | throw IO_error(ss.str()); |
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111 | } |
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112 | } |
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113 | if(sep!='\0' && line[line.size()-1]==sep) // add NaN for final separator |
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114 | v.push_back(std::numeric_limits<double>::quiet_NaN()); |
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115 | if (!nof_columns) |
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116 | nof_columns=v.size(); |
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117 | else if (nof_rows && (nof_columns>1)) { |
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118 | std::ostringstream s; |
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119 | s << "vector::vector(std::istream&) data file error:\n" |
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120 | << " File has inconsistent number of rows (" << nof_rows |
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121 | << ") and columns (" << nof_columns |
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122 | << ").\n Expected a row or a column vector."; |
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123 | throw utility::IO_error(s.str()); |
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124 | } |
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125 | else if (v.size()!=nof_columns) { |
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126 | std::ostringstream s; |
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127 | s << "vector::vector(std::istream&) data file error:\n" |
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128 | << " Line " << nof_rows << " has " << v.size() |
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129 | << " columns; expected " << nof_columns << " column."; |
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130 | throw utility::IO_error(s.str()); |
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131 | } |
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132 | data_matrix.push_back(v); |
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133 | } |
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134 | |
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135 | // manipulate the state of the stream to be good |
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136 | is.clear(std::ios::goodbit); |
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137 | // convert the data to a gsl vector |
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138 | vec_ = gsl_vector_alloc(nof_rows*nof_columns); |
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139 | if (!vec_) |
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140 | throw utility::GSL_error("vector::vector failed to allocate memory"); |
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141 | size_t n=0; |
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142 | // if gsl error handler disabled, out of bounds index will not |
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143 | // abort the program. |
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144 | for (size_t i=0; i<nof_rows; i++) |
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145 | for (size_t j=0; j<nof_columns; j++) |
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146 | gsl_vector_set( vec_, n++, data_matrix[i][j] ); |
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147 | const_vec_ = vec_; |
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148 | } |
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149 | |
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150 | |
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151 | vector::~vector(void) |
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152 | { |
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153 | delete_allocated_memory(); |
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154 | } |
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155 | |
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156 | |
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157 | const vector& vector::assign(const VectorBase& other) |
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158 | { |
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159 | delete_allocated_memory(); |
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160 | if (other.size()) { |
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161 | if (size()!=other.size()) |
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162 | vec_ = gsl_vector_alloc(other.size()); |
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163 | if (!vec_) |
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164 | throw utility::GSL_error("vector failed to allocate memory"); |
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165 | gsl_vector_memcpy(vec_,other.gsl_vector_p()); |
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166 | const_vec_ = vec_; |
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167 | } |
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168 | return *this; |
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169 | } |
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170 | |
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171 | |
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172 | gsl_vector* vector::create_gsl_vector_copy(const VectorBase& other) const |
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173 | { |
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174 | gsl_vector* vec = gsl_vector_alloc(other.size()); |
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175 | if (!vec) |
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176 | throw utility::GSL_error("vector::create_gsl_vector_copy failed to allocate memory"); |
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177 | if (gsl_vector_memcpy(vec, other.gsl_vector_p())) |
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178 | throw utility::GSL_error("vector::create_gsl_matrix_copy dimension mis-match"); |
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179 | return vec; |
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180 | } |
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181 | |
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182 | |
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183 | void vector::delete_allocated_memory(void) |
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184 | { |
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185 | if (vec_) |
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186 | gsl_vector_free(vec_); |
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187 | const_vec_ = vec_ = NULL; |
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188 | } |
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189 | |
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190 | |
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191 | bool vector::isview(void) const |
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192 | { |
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193 | return false; |
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194 | } |
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195 | |
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196 | |
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197 | void vector::resize(size_t n, double init_value) |
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198 | { |
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199 | delete_allocated_memory(); |
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200 | const_vec_ = vec_ = gsl_vector_alloc(n); |
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201 | if (!vec_) |
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202 | throw utility::GSL_error("vector::vector failed to allocate memory"); |
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203 | all(init_value); |
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204 | } |
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205 | |
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206 | |
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207 | void set_basis(vector& v, size_t i) |
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208 | { |
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209 | assert(v.gsl_vector_p()); |
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210 | gsl_vector_set_basis(v.gsl_vector_p(),i); |
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211 | } |
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212 | |
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213 | |
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214 | void sort(vector& v) |
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215 | { |
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216 | assert(v.gsl_vector_p()); |
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217 | std::sort(v.begin(), v.end()); |
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218 | } |
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219 | |
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220 | |
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221 | void swap(vector& v, vector& w) |
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222 | { |
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223 | assert(v.gsl_vector_p()); assert(w.gsl_vector_p()); |
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224 | int status=gsl_vector_swap(v.gsl_vector_p(),w.gsl_vector_p()); |
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225 | if (status) |
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226 | throw utility::GSL_error(std::string("swap(vector&,vector&)",status)); |
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227 | } |
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228 | |
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229 | |
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230 | const vector& vector::operator=( const VectorBase& other ) |
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231 | { |
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232 | return assign(other); |
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233 | } |
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234 | |
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235 | |
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236 | const vector& vector::operator=( const vector& other ) |
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237 | { |
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238 | return assign(other); |
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239 | } |
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240 | |
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241 | |
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242 | }}} // of namespace utility, yat, and thep |
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