Mercurial > octave
changeset 23306:a009a871825c
Improve performance of dlmread by pre-allocating larger array (bug #50102).
* dlmread.cc (Fdlmread): Increase rmax, max number of rows, in powers of 2 to
avoid constant re-sizing of output matrix.
| author | Rik <rik@octave.org> |
|---|---|
| date | Sun, 19 Mar 2017 13:27:30 -0700 |
| parents | 34c75889ed50 |
| children | 507e3150f034 |
| files | libinterp/corefcn/dlmread.cc |
| diffstat | 1 files changed, 1 insertions(+), 1 deletions(-) [+] |
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--- a/libinterp/corefcn/dlmread.cc Sun Mar 19 08:26:39 2017 -0700 +++ b/libinterp/corefcn/dlmread.cc Sun Mar 19 13:27:30 2017 -0700 @@ -405,7 +405,7 @@ { // Use resize_and_fill for the case of unequal length rows. // Keep rmax a power of 2. - rmax = 2 * std::max (r-1, static_cast<octave_idx_type> (1)); + rmax = std::max (2*(r-1), rmax); cmax = std::max (c, cmax); if (iscmplx) cdata.resize (rmax, cmax, empty_value);