sofars 0.6.0

Pure Rust implementation of the IAU SOFA library
Documentation 
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///  P-vector subtraction.
///
///  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:
///  ```
///     amb      double[3]      a - b
///  ```
///  Note:
///     It is permissible to re-use the same array for any of the
///     arguments.
pub fn pmp(a: &[f64; 3], b: &[f64; 3]) -> [f64; 3] {
    [a[0] - b[0], a[1] - b[1], a[2] - b[2]]
}