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authorJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
committerJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
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+.help vn Jun99 "Slalib Package"
+.nf
+
+ SUBROUTINE slVN (V, UV, VM)
+
+ - - -
+ V N
+ - - -
+
+ Normalizes a 3-vector also giving the modulus (single precision)
+
+ Given:
+ V real(3) vector
+
+ Returned:
+ UV real(3) unit vector in direction of V
+ VM real modulus of V
+
+ If the modulus of V is zero, UV is set to zero as well
+
+ P.T.Wallace Starlink 23 November 1995
+
+ Copyright (C) 1995 Rutherford Appleton Laboratory
+ Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
+
+.fi
+.endhelp