Initial commit

1 files changed, 35 insertions, 0 deletions

diff --git a/sys/imio/iki/fxf/fxfrcard.x b/sys/imio/iki/fxf/fxfrcard.x
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+++ b/sys/imio/iki/fxf/fxfrcard.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ 
+include <mii.h>
+include "fxf.h"
+
+# FXF_READ_CARD -- Read a FITS header card.
+
+int procedure fxf_read_card (fd, ibuf, obuf, ncards)
+
+int	fd			#I Input file descriptor
+char	ibuf[ARB]		#I input buffer
+char    obuf[ARB]		#O Output buffer
+int	ncards			#I ncards read so far
+
+int	ip, nchars_read
+int	read()
+errchk	read
+
+begin
+	# We read one FITS block first, read card from it until 36
+	# cards have been processed, where we read again.
+
+	if (mod (ncards, 36) == 0) {
+	    nchars_read = read (fd, ibuf, FITS_BLOCK_CHARS)
+	    if (nchars_read ==  EOF)
+	        return (EOF)
+	    call miiupk (ibuf, ibuf, FITS_BLOCK_BYTES, MII_BYTE, TY_CHAR)
+	    ip = 1
+	}
+	
+	call amovc (ibuf[ip], obuf, LEN_CARD)
+	ip = ip + LEN_CARD
+
+	return (LEN_CARD)
+end