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-rw-r--r--demos/mandelbrot/mandelbrot.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/demos/mandelbrot/mandelbrot.cpp b/demos/mandelbrot/mandelbrot.cpp
index 59b68256c..7d86246a4 100644
--- a/demos/mandelbrot/mandelbrot.cpp
+++ b/demos/mandelbrot/mandelbrot.cpp
@@ -82,7 +82,7 @@ void MandelbrotWidget::paintEvent(QPaintEvent *)
{
float resolution = xradius*2/width();
int max_iter = 64;
- if(resolution < 1e-4f) max_iter += 32 * ( 4 - std::log10(resolution));
+ if(resolution < 1e-4f) max_iter += 32 * ( - 4 - std::log10(resolution));
max_iter = (max_iter/4)*4;
int img_width = width()/draft;
int img_height = height()/draft;