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<TITLE> headset
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<A NAME="section-1.1.1"><H3>NAME</H3></A>
<P>
ft_headsetl,ft_headseti,ft_headsetr,ft_headsets -Fitsy FITS header set routines.
<A NAME="section-1.1.2"><H3>SYNOPSIS</H3></A>
<PRE>
FITSCard ft_headsetl(FITSHead fits, char *name, int n, int lvalue, char *comm);
FITSCard ft_headseti(FITSHead fits, char *name, int n, int ivalue, char *comm);
FITSCard ft_headsetr(FITSHead fits, char *name, int n, double rvalue, int prec, char *comm);
FITSCard ft_headsets(FITSHead fits, char *name, int n, char *svalue, char *comm);
<P>
</PRE>
<A NAME="section-1.1.3"><H3>PARAMETERS</H3></A>
<UL>
<P>
<LI> <B>FITSHead fits</B> - FITS header to search in.
<LI> <B>char *name</B> - keyword name.
<LI> <B>int n</B> - keyword index number, if is zero no
index number is appended to the keyword.
<LI> <B>int lvalue</B> - Logical to format as a FITS value.
<LI> <B>char *comm</B> - Comment for the card.
<LI> <B>int ivalue</B> - Integer to format as a FITS value.
<LI> <B>double rvalue</B> - Double to format as a FITS value.
<LI> <B>int prec</B> - The value is formatted
at this precision.
<LI> <B>char *svalue</B> - String to format as a FITS value.
</UL>
<A NAME="section-1.1.4"><H3>DESCRIPTION</H3></A>
<A NAME="section-1.1.4.1"><H4>ft_headsetl</H4></A>
<P>
Find a FITS card in the header and format a logical value into it.
<A NAME="section-1.1.4.2"><H4>ft_headseti</H4></A>
<P>
Find a FITS card in the header and format a logical value into it.
<A NAME="section-1.1.4.3"><H4>ft_headsetr</H4></A>
<P>
Find a FITS card in the header and format a logical value into it.
<A NAME="section-1.1.4.4"><H4>ft_headsets</H4></A>
<P>
Find a FITS card in the header and format a logical value into it.
<A NAME="section-1.1.5"><H3>EXAMPLES</H3></A>
<P>
Set the value part of a card in a header:
<PRE>
int i = 15;
double d = 34.7;
char *c = "Shutter";
FITSCard fits;
FITSCard card;
card = <B>ft_headsetl</B>(fits, "Cosmic", 0, 1, "Removed Cosimics (silver bullet method)");
card = <B>ft_headseti</B>(fits, "IValue" , 0, i, "15 is the number");
card = <B>ft_headsetr</B>(fits, "Gain", 1, d, 2, "GAIN1");
card = <B>ft_headsetr</B>(fits, "Gain", 2, d, 2, "GAIN2");
card = <B>ft_headsets</B>(fits, "XHIST", 1, "Xray processed!", NULL);
/* In this example the special pointer <B>ft_comment</B> is used to
use the existing comment in the card.
*/
card = <B>ft_headsets</B>(fits, "FILTER", 0, "V", ft_comment);
<P>
</PRE>
<p>
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