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diff --git a/funtools/fitsy/doc/basicval.html b/funtools/fitsy/doc/basicval.html new file mode 100644 index 0000000..d849b10 --- /dev/null +++ b/funtools/fitsy/doc/basicval.html @@ -0,0 +1,77 @@ +<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.2//EN"> +<HTML> +<HEAD> +<p> +<!-- pnuts --> <a href="headfile.html">[Previous]</a> <a href="imageval.html">[Next]</a> <a href="fitsy.html">[Up]</a> <a href="../mmtilib.html">[Top]</a> +<META NAME="generator" CONTENT="txt2html v1.3"> +</HEAD> +<BODY> + +<A NAME="section-1.1.1"><H3>Basic FITS Values</H3></A> + + +<P> + When a FITS header is scanned in memory or read from a file several + basic values are retrieved from the header and stored in the <B>FITSHead</B> + or <B>FITSBasic</B> structures. This structure may be accesed with the following + macros: + +<PRE> + #define <B>ft_ncards</B>(fits) ( fits->ncard ) + #define <B>ft_cardnth</B>(fits, nth) ( ( nth <= fits->ncard ) \ + ? &fits->cards[nth-1] \ + : NULL ) + + #define <B>ft_last</B>(fits) ft_cardnth(fits, fits->ncard) + + #define <B>ft_swapped</B>() (*(short *)"001000" & 0x0001) + #define <B>ft_seek</B>(fits) ( fits->seek ) + + typedef struct <B>FITSHead</B> { + FITSCard cards; + FITSCard *index; + FITSCard last; + int acard; + int ncard; + + int mem; + int seek; + int data; + + FITSBasic basic; + FITSImage image; + FITSTable table; + } <B>*FITSHead</B>; + + + #define <B>ft_simple</B>(fits) ( fits->basic->simple ) + #define <B>ft_name</B>(fits) ( fits->basic->name ) + #define <B>ft_bitpix</B>(fits) ( fits->basic->bitpix ) + #define <B>ft_naxes</B>(fits) ( fits->basic->naxes ) + #define <B>ft_naxis</B>(fits, i) ( fits->basic->naxis[i-1]) + #define <B>ft_pcount</B>(fits) ( fits->basic->pcount ) + #define <B>ft_gcount</B>(fits) ( fits->basic->gcount ) + #define <B>ft_databytes</B>(fits) ( fits->basic->databytes) + #define <B>ft_databloks</B>(fits) ( fits->basic->databloks) + + typedef struct <B>FITSBasic</B> { + int simple; + char *name; + + int bitpix; + int naxes; + int *naxis; + + int gcount; + int pcount; + + int databytes; + int databloks; + } <B>*FITSBasic</B>; +<P> +</PRE> + +<p> +<!-- pnuts --> <a href="headfile.html">[Previous]</a> <a href="imageval.html">[Next]</a> <a href="fitsy.html">[Up]</a> <a href="../mmtilib.html">[Top]</a> +</BODY> +</HTML> |