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comparison liboctave/boolNDArray.cc @ 10152:b6b65e71049b

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optimize cumsum with logicals
author Jaroslav Hajek <highegg@gmail.com>
date Wed, 20 Jan 2010 21:14:52 +0100
parents 26abff55f6fe
children 4c0cdbe0acca
comparison
equal deleted inserted replaced
10151:c2f1cdb59821 10152:b6b65e71049b
70 } 70 }
71 71
72 NDArray 72 NDArray
73 boolNDArray::sum (int dim) const 73 boolNDArray::sum (int dim) const
74 { 74 {
75 // NOTE: going via octave_idx_type is faster even though it requires a conversion. 75 // NOTE: going via octave_idx_type is typically faster even though it
76 // requires a conversion.
76 return do_mx_red_op<Array<octave_idx_type> , bool> (*this, dim, mx_inline_count); 77 return do_mx_red_op<Array<octave_idx_type> , bool> (*this, dim, mx_inline_count);
77 } 78 }
78 79
79 NDArray 80 NDArray
80 boolNDArray::cumsum (int dim) const 81 boolNDArray::cumsum (int dim) const
81 { 82 {
82 // NOTE: going via octave_idx_type is faster even though it requires a conversion. 83 // In this case, it's better to sum directly to doubles.
83 return do_mx_cum_op<Array<octave_idx_type> , bool> (*this, dim, mx_inline_cumcount); 84 return do_mx_cum_op<NDArray , bool> (*this, dim, mx_inline_cumcount);
84 } 85 }
85 86
86 boolNDArray 87 boolNDArray
87 boolNDArray::concat (const boolNDArray& rb, const Array<octave_idx_type>& ra_idx) 88 boolNDArray::concat (const boolNDArray& rb, const Array<octave_idx_type>& ra_idx)
88 { 89 {