From 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 Mon Sep 17 00:00:00 2001 From: Joe Hunkeler Date: Tue, 11 Aug 2015 16:51:37 -0400 Subject: Repatch (from linux) of OSX IRAF --- math/slalib/doc/epco.hlp | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 math/slalib/doc/epco.hlp (limited to 'math/slalib/doc/epco.hlp') diff --git a/math/slalib/doc/epco.hlp b/math/slalib/doc/epco.hlp new file mode 100644 index 00000000..d92bfde2 --- /dev/null +++ b/math/slalib/doc/epco.hlp @@ -0,0 +1,40 @@ +.help epco Jun99 "Slalib Package" +.nf + + DOUBLE PRECISION FUNCTION slEPCO (K0, K, E) + + - - - - - + E P C O + - - - - - + + Convert an epoch into the appropriate form - 'B' or 'J' + + Given: + K0 char form of result: 'B'=Besselian, 'J'=Julian + K char form of given epoch: 'B' or 'J' + E dp epoch + + Called: slEPB, slEJ2D, slEPJ, slEB2D + + Notes: + + 1) The result is always either equal to or very close to + the given epoch E. The routine is required only in + applications where punctilious treatment of heterogeneous + mixtures of star positions is necessary. + + 2) K0 and K are not validated. They are interpreted as follows: + + o If K0 and K are the same the result is E. + o If K0 is 'B' or 'b' and K isn't, the conversion is J to B. + o In all other cases, the conversion is B to J. + + Note that K0 and K won't match if their cases differ. + + P.T.Wallace Starlink 5 September 1993 + + Copyright (C) 1995 Rutherford Appleton Laboratory + Copyright (C) 1995 Association of Universities for Research in Astronomy Inc. + +.fi +.endhelp -- cgit