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Fix: SIGFPE when drawing grid #99

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Merged
da-luce merged 2 commits into from
Mar 29, 2026
Merged

Fix: SIGFPE when drawing grid #99

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08cdf24
Fix: SIGFPE when drawing grid
yinghao-w Mar 23, 2026
84bb1b7
style: run format
da-luce Mar 29, 2026
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12 changes: 6 additions & 6 deletions src/core_render.c
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Original file line number Diff line number Diff line change
Expand Up @@ -266,14 +266,14 @@ void render_azimuthal_grid(WINDOW *win, const struct Conf *config)
// Minimum number of rows separating grid line (at end of window)
int min_height = 10;

// Set the step size to the smallest desirable increment
int inc;
for (int i = length - 1; i >= 0; --i)
int inc = step_sizes[length - 1]; // Fallback to large delta on small windows
for (int i = 0; i < length; ++i)
{
inc = step_sizes[i];
if (round(rad_vertical * sin(inc * to_rad)) < min_height)
// Vertical offset (rows) of the angle at edge of window -- approximately the "arc length" for small angles
int vertical_offset = (int)round(rad_vertical * sin(step_sizes[i] * to_rad));
if (vertical_offset >= min_height)
{
inc = step_sizes[--i]; // Go back to previous increment
inc = step_sizes[i];
break;
}
}
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