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1 // Copyright (C) 2010 NICTA (www.nicta.com.au)
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2 // Copyright (C) 2010 Conrad Sanderson
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3 //
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4 // This file is part of the Armadillo C++ library.
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5 // It is provided without any warranty of fitness
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6 // for any purpose. You can redistribute this file
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7 // and/or modify it under the terms of the GNU
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8 // Lesser General Public License (LGPL) as published
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9 // by the Free Software Foundation, either version 3
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10 // of the License or (at your option) any later version.
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11 // (see http://www.opensource.org/licenses for more info)
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12
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13
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14 //! \addtogroup op_flip
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15 //! @{
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16
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17
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18
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19 template<typename T1>
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20 inline
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21 void
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22 op_flipud::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_flipud>& in)
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23 {
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24 arma_extra_debug_sigprint();
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25
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26 typedef typename T1::elem_type eT;
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27
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28 const unwrap<T1> tmp(in.m);
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29 const Mat<eT> X = tmp.M;
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30
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31 if(&out != &X)
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32 {
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33 out.copy_size(X);
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34
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35 for(uword i=0; i<X.n_rows; ++i)
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36 {
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37 out.row(i) = X.row(X.n_rows-1 - i);
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38 }
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39 }
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40 else
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41 {
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42 const uword N = X.n_rows / 2;
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43
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44 for(uword i=0; i<N; ++i)
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45 {
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46 out.swap_rows(i, X.n_rows-1 - i);
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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
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52
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53 template<typename T1>
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54 inline
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55 void
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56 op_fliplr::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_fliplr>& in)
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57 {
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58 arma_extra_debug_sigprint();
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59
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60 typedef typename T1::elem_type eT;
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61
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62 const unwrap<T1> tmp(in.m);
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63 const Mat<eT> X = tmp.M;
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64
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65 if(&out != &X)
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66 {
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67 out.copy_size(X);
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68
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69 for(uword i=0; i<X.n_cols; ++i)
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70 {
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71 out.col(i) = X.col(X.n_cols-1 - i);
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72 }
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73 }
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74 else
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75 {
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76 const uword N = X.n_cols / 2;
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77
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78 for(uword i=0; i<N; ++i)
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79 {
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80 out.swap_cols(i, X.n_cols-1 - i);
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81 }
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82 }
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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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