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eraC2s

[theta, phi] = ERFA.c2s(p)

P-vector to spherical coordinates.

Given:

   p      double[3]    p-vector

Returned:

   theta  double       longitude angle (radians)
   phi    double       latitude angle (radians)

Notes:

  1. The vector p can have any magnitude; only its direction is used.

  2. If p is null, zero theta and phi are returned.

  3. At either pole, zero theta is returned.

This revision: 2021 May 11

Copyright (C) 2013-2021, NumFOCUS Foundation. Derived, with permission, from the SOFA library.