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/**
* Least-squares fit of a sphere to a set of points.
*
* Fits a sphere to a set of points on the sphere surface.
*
* @param x point coordinates on the X axis
* @param y point coordinates on the Y axis
* @param z point coordinates on the Z axis
* @param size number of points
* @param max_iterations abort if maximum number of iterations have been reached. If unsure, set to 100.
* @param delta abort if error is below delta. If unsure, set to 0 to run max_iterations times.
* @param sphere_x coordinate of the sphere center on the X axis
* @param sphere_y coordinate of the sphere center on the Y axis
* @param sphere_z coordinate of the sphere center on the Z axis
* @param sphere_radius sphere radius
*
* @return 0 on success, 1 on failure
*/
int sphere_fit_least_squares(const float x[], const float y[], const float z[],
unsigned int size, unsigned int max_iterations, float delta, float *sphere_x, float *sphere_y, float *sphere_z, float *sphere_radius);
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