///  P-vector addition.

///

///  This function is part of the International Astronomical Union's

///  SOFA (Standards of Fundamental Astronomy) software collection.

///

///  Status:  vector/matrix support function.

///

///  Given:

///  ```

///     a        double[3]      first p-vector

///     b        double[3]      second p-vector

///  ```

///

///  Returned:

///  ```

///     apb      double[3]      a + b

///  ```

///

///  Note:

///     It is permissible to re-use the same array for any of the

///     arguments.

#[inline]

pub fn ppp(a: &[f64; 3], b: &[f64; 3]) -> [f64; 3] {

    [a[0] + b[0], a[1] + b[1], a[2] + b[2]]

}