1 | |
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2 | #include <iostream> |
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3 | #include "vector.h" |
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4 | |
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5 | using namespace thep_gsl_api; |
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6 | |
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7 | |
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8 | // Constructors and Destructors |
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9 | /////////////////////////////// |
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10 | vector::vector() : v_( NULL ) |
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11 | { |
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12 | is_col_ = true; |
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13 | } |
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14 | |
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15 | |
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16 | vector::vector( const size_t& N, bool is_col_vector, |
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17 | bool init_to_zero ) : |
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18 | is_col_( is_col_vector ) |
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19 | { |
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20 | if( init_to_zero ) |
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21 | { |
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22 | v_ = gsl_vector_calloc( N ); |
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23 | } |
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24 | else |
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25 | { |
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26 | v_ = gsl_vector_alloc ( N ); |
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27 | } |
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28 | } |
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29 | |
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30 | |
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31 | // Is this the way to do it? No copy ... |
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32 | // internal data ... |
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33 | vector::vector( gsl_vector* v, bool is_col ) : v_( v ), is_col_( is_col ) |
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34 | { |
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35 | } |
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36 | |
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37 | |
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38 | // Copy constructor |
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39 | vector::vector( const vector& other ) |
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40 | { |
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41 | v_ = new_copy( other.get_gsl_vector() ); |
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42 | is_col_ = other.is_column(); |
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43 | } |
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44 | |
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45 | |
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46 | vector::~vector() |
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47 | { |
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48 | if( v_ ) |
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49 | { |
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50 | gsl_vector_free( v_ ); |
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51 | v_ = NULL; |
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52 | } |
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53 | } |
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54 | |
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55 | |
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56 | gsl_vector* vector::new_copy( const gsl_vector* p_other ) |
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57 | { |
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58 | // Get dimenstions |
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59 | size_t N = p_other->size; |
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60 | |
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61 | // Create new empty vector |
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62 | gsl_vector* p_res = gsl_vector_alloc( N ); |
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63 | |
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64 | // Copy p_others elements into p_res |
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65 | gsl_vector_memcpy( p_res, p_other ); |
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66 | |
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67 | return p_res; |
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68 | } |
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69 | |
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70 | |
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71 | // Operators on vectors |
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72 | //////////////////////// |
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73 | vector& vector::operator=( const vector& other ) |
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74 | { |
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75 | if( this != &other ) |
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76 | { |
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77 | gsl_vector* v_new = new_copy( other.get_gsl_vector() ); |
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78 | if( v_ ) gsl_vector_free( v_ ); |
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79 | v_ = v_new; |
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80 | } |
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81 | return *this; |
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82 | } |
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83 | |
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84 | |
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85 | vector vector::operator+( const vector &other ) const |
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86 | { |
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87 | assert( size() == other.size() ); |
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88 | vector res( *this ); |
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89 | gsl_vector_add( res.get_gsl_vector(), other.get_gsl_vector() ); |
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90 | return res; |
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91 | } |
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92 | |
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93 | |
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94 | vector vector::operator-( const vector &other ) const |
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95 | { |
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96 | assert( size() == other.size() ); |
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97 | vector res( *this ); |
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98 | gsl_vector_sub( res.get_gsl_vector(), other.get_gsl_vector() ); |
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99 | return res; |
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100 | } |
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101 | |
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102 | |
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103 | int vector::operator/=( const vector& other ) const |
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104 | { |
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105 | return gsl_vector_div( v_, other.get_gsl_vector() ); |
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106 | } |
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107 | |
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108 | // Each element is divided by the "constant" |
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109 | int vector::operator/=( const double& constant ) |
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110 | { |
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111 | assert( constant != 0 ); |
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112 | return gsl_vector_scale( v_, 1 / constant ); |
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113 | } |
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114 | |
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115 | // This is not the dot product, hence a matrix |
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116 | // is returned |
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117 | // matrix vector::operator*( const vector &other ) const |
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118 | // { |
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119 | // assert( rows() == other.cols() ); |
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120 | // matrix res( rows(), other.cols() ); |
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121 | // gsl_linalg_matmult( v_, other.get_gsl_vector(), |
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122 | // res.get_gsl_vector() ); |
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123 | // return res; |
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124 | // } |
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125 | |
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126 | |
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127 | std::ostream& thep_gsl_api::operator<< ( std::ostream& s_out, |
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128 | const vector& a ) |
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129 | { |
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130 | using namespace std; |
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131 | s_out.setf( ios::fixed ); |
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132 | |
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133 | if( a.is_column() ) |
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134 | { |
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135 | for ( size_t i = 0; i < a.size(); ++i ) |
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136 | { |
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137 | s_out << a.get( i ) << endl; |
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138 | } |
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139 | } |
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140 | else |
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141 | { |
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142 | for ( size_t j = 0; j < a.size(); ++j ) |
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143 | { |
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144 | s_out << a.get( j ) << " "; |
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145 | } |
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146 | } |
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147 | |
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148 | return s_out; |
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149 | } |
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150 | |
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151 | |
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152 | // // Public functions (A-Z) |
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153 | // ///////////////////////// |
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154 | |
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155 | |
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