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authorJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
committerJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
commitfa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch)
treebdda434976bc09c864f2e4fa6f16ba1952b1e555 /pkg/tbtables/tbftyb.x
downloadiraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz
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+include <mach.h> # for SZB_CHAR
+include "tbtables.h"
+
+# tbftyb -- determine data type from tform
+# This is for a binary table; use tbftya for an ascii table.
+#
+# Phil Hodge, 6-Jul-1995 Subroutine created
+# Phil Hodge, 23-Jun-2000 Add tdtype to calling sequence; compare tscal &
+# tzero with 1. & 0. instead of INDEFD to see if they're defined.
+
+procedure tbftyb (tform, tdisp, tscal, tzero,
+ tdtype, dtype, pformat, maxch, nelem, len)
+
+char tform[ARB] # i: TFORM from FITS file
+char tdisp[ARB] # i: TDISP from FITS file
+double tscal, tzero # i: scaling parameters, or 1 & 0 if not defined
+int tdtype # o: true data type in FITS table (e.g. integer)
+int dtype # o: data type to use for table interface
+char pformat[maxch] # o: spp print format
+int maxch # i: size of print format string
+int nelem # o: number of elements in array
+int len # o: nelem * size of one element
+#--
+pointer sp
+pointer tform_lc # tform in lower case
+pointer errmess # scratch for error message
+int rpt # repeat count
+int lenstring # size of string
+int ip, ctoi()
+
+begin
+ call smark (sp)
+ call salloc (tform_lc, SZ_FNAME, TY_CHAR)
+
+ call strcpy (tform, Memc[tform_lc], SZ_FNAME)
+ call strlwr (Memc[tform_lc])
+
+ # Assign a default; this is only used for char string.
+ lenstring = 1
+
+ # Read repeat count.
+ ip = 1
+ if (ctoi (Memc[tform_lc], ip, rpt) < 1)
+ rpt = 1
+
+ nelem = rpt
+
+ if (Memc[tform_lc+ip-1] == 'a') { # character
+ # Single element has tform wA, but FITSIO supports rAw as well.
+ ip = ip + 1 # skip past 'a' and check for a number
+ if (ctoi (Memc[tform_lc], ip, lenstring) < 1)
+ lenstring = rpt
+ dtype = -lenstring
+ nelem = rpt / lenstring
+ len = (lenstring + SZB_CHAR-1) / SZB_CHAR * SZ_CHAR
+ len = nelem * len
+ } else if (Memc[tform_lc+ip-1] == 'b') { # unsigned byte
+ dtype = TBL_TY_SHORT
+ len = nelem * SZ_SHORT
+ } else if (Memc[tform_lc+ip-1] == 'c') { # complex; use double
+ dtype = TBL_TY_DOUBLE
+ len = nelem * SZ_DOUBLE
+ } else if (Memc[tform_lc+ip-1] == 'd') { # double precision
+ dtype = TBL_TY_DOUBLE
+ len = nelem * SZ_DOUBLE
+ } else if (Memc[tform_lc+ip-1] == 'e') { # single precision
+ dtype = TBL_TY_REAL
+ len = nelem * SZ_REAL
+ } else if (Memc[tform_lc+ip-1] == 'i') { # 16-bit integer
+ dtype = TBL_TY_SHORT
+ len = nelem * SZ_SHORT
+ } else if (Memc[tform_lc+ip-1] == 'j') { # 32-bit integer
+ dtype = TBL_TY_INT
+ len = nelem * SZ_INT32
+ } else if (Memc[tform_lc+ip-1] == 'l') { # logical
+ dtype = TBL_TY_BOOL
+ len = nelem * SZ_BOOL
+ } else if (Memc[tform_lc+ip-1] == 'm') { # complex double prec
+ call error (1, "can't handle complex double precision")
+ } else if (Memc[tform_lc+ip-1] == 'p') { # variable length
+# call error (1, "can't handle variable length arrays")
+ ;
+ } else if (Memc[tform_lc+ip-1] == 'x') { # bit
+ dtype = TBL_TY_SHORT
+ len = nelem * SZ_SHORT
+ } else {
+ call salloc (errmess, SZ_LINE, TY_CHAR)
+ call sprintf (Memc[errmess], SZ_LINE,
+ "unrecognized TFORM: `%s'")
+ call pargstr (tform)
+ call error (1, Memc[errmess])
+ }
+
+ tdtype = dtype
+
+ # If either scaling parameter is defined, promote the data type
+ # from integer to floating point. Note that only dtype is modified;
+ # tdtype is the actual data type of the data in the FITS table.
+ if (tscal != 1.d0 || tzero != 0.d0) {
+ if (dtype == TBL_TY_SHORT) {
+ dtype = TBL_TY_REAL
+ len = nelem * SZ_REAL
+ } else if (dtype == TBL_TY_INT) {
+ dtype = TBL_TY_DOUBLE
+ len = nelem * SZ_DOUBLE
+ }
+ }
+
+ # Assign default print format or convert format from Fortran to SPP.
+ if (tdisp[1] == NULL) # not specified
+ call tbbadf ("", dtype, lenstring, pformat, maxch)
+ else
+ call tbbftp (tdisp, pformat)
+
+ call sfree (sp)
+end