forked from Archive/PX4-Autopilot
positionControl: add check on sign before sqrtf
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@ -164,7 +164,12 @@ void PositionControl::_velocityControl(const float dt)
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// Get allowed horizontal thrust after prioritizing vertical control
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const float thrust_max_squared = _lim_thr_max * _lim_thr_max;
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const float thrust_z_squared = _thr_sp(2) * _thr_sp(2);
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float thrust_max_xy = sqrtf(thrust_max_squared - thrust_z_squared);
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const float thrust_max_xy_squared = thrust_max_squared - thrust_z_squared;
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float thrust_max_xy = 0;
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if (thrust_max_xy_squared > 0) {
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thrust_max_xy = sqrtf(thrust_max_xy_squared);
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}
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// Saturate thrust in horizontal direction
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const Vector2f thrust_sp_xy(_thr_sp);
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