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diff --git a/src/slalib/sun67.htx/node176.html b/src/slalib/sun67.htx/node176.html new file mode 100644 index 0000000..a12d2ab --- /dev/null +++ b/src/slalib/sun67.htx/node176.html @@ -0,0 +1,100 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<!--Converted with LaTeX2HTML 97.1 (release) (July 13th, 1997) + by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds +* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan +* with significant contributions from: + Jens Lippman, Marek Rouchal, Martin Wilck and others --> +<HTML> +<HEAD> +<TITLE>SLA_SEP - Angle Between 2 Points on Sphere</TITLE> +<META NAME="description" CONTENT="SLA_SEP - Angle Between 2 Points on Sphere"> +<META NAME="keywords" CONTENT="sun67"> +<META NAME="resource-type" CONTENT="document"> +<META NAME="distribution" CONTENT="global"> +<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso_8859_1"> +<LINK REL="STYLESHEET" HREF="sun67.css"> +<LINK REL="next" HREF="node177.html"> +<LINK REL="previous" HREF="node175.html"> +<LINK REL="up" HREF="node13.html"> +<LINK REL="next" HREF="node177.html"> +</HEAD> +<BODY > +<BR> <HR> +<A NAME="tex2html2186" HREF="node177.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2184" HREF="node13.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2178" HREF="node175.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2187" HREF="node177.html">SLA_SMAT - Solve Simultaneous Equations</A> +<BR> +<B>Up:</B> <A NAME="tex2html2185" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2179" HREF="node175.html">SLA_S2TP - Spherical to Tangent Plane</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<H2><A NAME="SECTION0004163000000000000000">SLA_SEP - Angle Between 2 Points on Sphere</A> +<A NAME="xref_SLA_SEP"> </A><A NAME="SLA_SEP"> </A> +</H2> + <DL> +<DT><STRONG>ACTION:</STRONG> +<DD>Angle between two points on a sphere (single precision). +<DT><STRONG>CALL:</STRONG> +<DD><TT>R = sla_SEP (A1, B1, A2, B2)</TT> +<P> </DL> +<P> <DL> +<DT><STRONG>GIVEN:</STRONG> +<DD> +<BR> +<TABLE CELLPADDING=3> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>A1,B1</EM></TD> +<TH ALIGN="LEFT"><B>R</B></TH> +<TD ALIGN="LEFT" NOWRAP>spherical coordinates of one point (radians)</TD> +</TR> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>A2,B2</EM></TD> +<TD ALIGN="LEFT"><B>R</B></TD> +<TD ALIGN="LEFT" NOWRAP>spherical coordinates of the other point (radians)</TD> +</TR> +</TABLE></DL> +<P> <DL> +<DT><STRONG>RETURNED:</STRONG> +<DD> +<BR> +<TABLE CELLPADDING=3> +<TR VALIGN="TOP"><TD ALIGN="LEFT"><EM>sla_SEP</EM></TD> +<TH ALIGN="LEFT"><B>R</B></TH> +<TD ALIGN="LEFT" NOWRAP>angle between [A1,B1] and [A2,B2] in radians</TD> +</TR> +</TABLE></DL> +<P> <DL> +<DT><STRONG>NOTES:</STRONG> +<DD><DL COMPACT> +<DT>1. +<DD>The spherical coordinates are right ascension and declination, +longitude and latitude, <I>etc.</I> in radians. +<DT>2. +<DD>The result is always positive. + </DL></DL> +<BR> <HR> +<A NAME="tex2html2186" HREF="node177.html"> +<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next_motif.gif"></A> +<A NAME="tex2html2184" HREF="node13.html"> +<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up_motif.gif"></A> +<A NAME="tex2html2178" HREF="node175.html"> +<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="previous_motif.gif"></A> <A HREF="sun67.html#stardoccontents"><IMG ALIGN="BOTTOM" BORDER="0" + SRC="contents_motif.gif"></A> +<BR> +<B> Next:</B> <A NAME="tex2html2187" HREF="node177.html">SLA_SMAT - Solve Simultaneous Equations</A> +<BR> +<B>Up:</B> <A NAME="tex2html2185" HREF="node13.html">SUBPROGRAM SPECIFICATIONS</A> +<BR> +<B> Previous:</B> <A NAME="tex2html2179" HREF="node175.html">SLA_S2TP - Spherical to Tangent Plane</A> +<BR> <HR> <P> +<P><!--End of Navigation Panel--> +<ADDRESS> +<I>SLALIB --- Positional Astronomy Library<BR>Starlink User Note 67<BR>P. T. Wallace<BR>12 October 1999<BR>E-mail:ptw@star.rl.ac.uk</I> +</ADDRESS> +</BODY> +</HTML> |