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Diffstat (limited to 'math/slalib/doc/dsep.hlp')
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diff --git a/math/slalib/doc/dsep.hlp b/math/slalib/doc/dsep.hlp new file mode 100644 index 00000000..9b0f1117 --- /dev/null +++ b/math/slalib/doc/dsep.hlp @@ -0,0 +1,29 @@ +.help dsep Jun99 "Slalib Package" +.nf + + DOUBLE PRECISION FUNCTION slDSEP (A1, B1, A2, B2) + + - - - - - + D S E P + - - - - - + + Angle between two points on a sphere (double precision) + + Given: + A1,B1 dp spherical coordinates of one point + A2,B2 dp spherical coordinates of the other point + + (The spherical coordinates are RA,Dec, Long,Lat etc, in radians.) + + The result is the angle, in radians, between the two points. It + is always positive. + + Called: slDS2C + + P.T.Wallace Starlink April 1985 + + Copyright (C) 1995 Rutherford Appleton Laboratory + Copyright (C) 1995 Association of Universities for Research in Astronomy Inc. + +.fi +.endhelp |