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diff --git a/math/slalib/doc/dcc2s.hlp b/math/slalib/doc/dcc2s.hlp new file mode 100644 index 00000000..ace02cf7 --- /dev/null +++ b/math/slalib/doc/dcc2s.hlp @@ -0,0 +1,33 @@ +.help dcc2s Jun99 "Slalib Package" +.nf + + SUBROUTINE slDC2S (V, A, B) + + - - - - - - + D C 2 S + - - - - - - + + Direction cosines to spherical coordinates (double precision) + + Given: + V d(3) x,y,z vector + + Returned: + A,B d spherical coordinates in radians + + The spherical coordinates are longitude (+ve anticlockwise + looking from the +ve latitude pole) and latitude. The + Cartesian coordinates are right handed, with the x axis + at zero longitude and latitude, and the z axis at the + +ve latitude pole. + + If V is null, zero A and B are returned. + At either pole, zero A is returned. + + P.T.Wallace Starlink July 1989 + + Copyright (C) 1995 Rutherford Appleton Laboratory + Copyright (C) 1995 Association of Universities for Research in Astronomy Inc. + +.fi +.endhelp |