diff options
| -rw-r--r-- | src/gui/graphicsview/qsimplex_p.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/gui/graphicsview/qsimplex_p.cpp b/src/gui/graphicsview/qsimplex_p.cpp index b1cba45..b90d53f 100644 --- a/src/gui/graphicsview/qsimplex_p.cpp +++ b/src/gui/graphicsview/qsimplex_p.cpp @@ -220,7 +220,13 @@ void QSimplex::combineRows(int toIndex, int fromIndex, qreal factor) qreal *to = matrix + toIndex * columns; for (int j = 1; j < columns; ++j) { - to[j] += factor * from[j]; + qreal value = from[j]; + + // skip to[j] = to[j] + factor*0.0 + if (value == 0.0) + continue; + + to[j] += factor * value; // ### Avoid Numerical errors if (qAbs(to[j]) < 0.0000000001) |