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*=======================================================================
*
* WCSLIB 7.4 - an implementation of the FITS WCS standard.
* Copyright (C) 1995-2021, Mark Calabretta
*
* This file is part of WCSLIB.
*
* WCSLIB is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WCSLIB is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with WCSLIB. If not, see http://www.gnu.org/licenses.
*
* Author: Mark Calabretta, Australia Telescope National Facility, CSIRO.
* http://www.atnf.csiro.au/people/Mark.Calabretta
* $Id: tdis2.f,v 7.4 2021/01/31 02:24:52 mcalabre Exp $
*=======================================================================
PROGRAM TDIS2
*-----------------------------------------------------------------------
*
* TDIS2 tests the WCSLIB Fortran routines for manipulating the contents
* of a disprm struct. Two disprm structs are used. One, residing in a
* linprm struct, is referenced by "address" (DISP), and the other (DISL)
* resides locally in an INTEGER array.
*
* DISP and WCSP, which are meant to hold addresses, are declared as
* INTEGER arrays of length 2 to accomodate 64-bit machines for which
* sizeof(void *) = 2*sizeof(int).
*
* Test input comes from TPV7.fits.
*-----------------------------------------------------------------------
INTEGER DPMAX
PARAMETER (DPMAX = 256)
LOGICAL GOTEND
INTEGER DISP(2), IBLOCK, IKEYRC, J, JK, JN, K, NAXIS, NDP,
: NKEYRC, NREJECT, NWCS, STATL, STATP, STATUS, WCSP(2)
DOUBLE PRECISION MAXDIS(2), TOTDIS
CHARACTER DTYPE(2)*72, KEYREC*80, HEADER*288000, INFILE*9
* On some systems, such as Sun Sparc, the structs MUST be aligned
* on a double precision boundary, done here using an equivalence.
* Failure to do this may result in mysterious "bus errors".
INCLUDE 'wcserr.inc'
INCLUDE 'wcshdr.inc'
INCLUDE 'wcs.inc'
INCLUDE 'lin.inc'
INCLUDE 'dis.inc'
INTEGER DP(DPMAX*DPLEN), WCS(WCSLEN), LIN(LINLEN), DISL(DISLEN)
DOUBLE PRECISION DUMMY1, DUMMY2, DUMMY3, DUMMY4
EQUIVALENCE (DUMMY1, DP)
EQUIVALENCE (DUMMY2, WCS)
EQUIVALENCE (DUMMY3, LIN)
EQUIVALENCE (DUMMY4, DISL)
DATA INFILE /'TPV7.fits'/
*-----------------------------------------------------------------------
STATUS = WCSERR_ENABLE (1)
WRITE (*, 10)
10 FORMAT (
: 'Testing WCSLIB Fortran disprm access routines (tdis2.f)',/,
: '-------------------------------------------------------')
* Open the FITS WCS test header for formatted, direct I/O.
OPEN (UNIT=1, FILE=INFILE, FORM='FORMATTED', ACCESS='DIRECT',
: RECL=80, IOSTAT=STATUS)
IF (STATUS.NE.0) THEN
WRITE (*, 20) STATUS, INFILE
20 FORMAT ('ERROR',I3,' opening ',A)
GO TO 999
END IF
* Read in the FITS header, excluding COMMENT and HISTORY keyrecords.
K = 1
NKEYRC = 0
GOTEND = .FALSE.
DO 50 IBLOCK = 0, 100
DO 40 IKEYRC = 1, 36
READ (1, '(A80)', REC=36*IBLOCK+IKEYRC, IOSTAT=STATUS) KEYREC
IF (STATUS.NE.0) THEN
WRITE (*, 30) STATUS
30 FORMAT ('ERROR',I5,' reading header.')
GO TO 999
END IF
IF (KEYREC(:8).EQ.' ') GO TO 40
IF (KEYREC(:8).EQ.'COMMENT ') GO TO 40
IF (KEYREC(:8).EQ.'HISTORY ') GO TO 40
HEADER(K:) = KEYREC
K = K + 80
NKEYRC = NKEYRC + 1
IF (KEYREC(:10).EQ.'END ') THEN
* An END keyrecord was read, but read the rest of the block.
GOTEND = .TRUE.
END IF
40 CONTINUE
IF (GOTEND) GO TO 60
50 CONTINUE
60 CLOSE (UNIT=1)
* Parse the header.
CALL FLUSH(6)
STATUS = WCSPIH (HEADER, NKEYRC, WCSHDR_none, 2, NREJECT, NWCS,
: WCSP)
IF (STATUS.NE.0) GO TO 999
* Copy into our WCSPRM struct.
STATUS = WCSVCOPY (WCSP, 0, WCS)
IF (STATUS.NE.0) GO TO 999
* WCSSET translates the TPV "projection" into a sequent distortion.
STATUS = WCSSET (WCS)
IF (STATUS.NE.0) THEN
STATUS = WCSPERR (WCS, CHAR(0))
GO TO 999
END IF
* Make a shallow copy of the linprm struct.
STATUS = WCSGTI (WCS, WCS_LIN, LIN)
IF (STATUS.NE.0) THEN
STATUS = WCSPERR (WCS, CHAR(0))
GO TO 999
END IF
* Extract a "pointer" to the disprm struct.
STATUS = LINGTI (LIN, LIN_DISSEQ, DISP)
IF (STATUS.NE.0) THEN
STATUS = LINPERR (LIN, CHAR(0))
GO TO 999
END IF
* Add a little texture. The first argument of DISPTD (and DISPRT,
* DISGET, etc.) is unity to indicate that DISP is a "pointer".
STATP = DISPTD (1, DISP, DIS_MAXDIS, 2.0010D0, 1, 0)
IF (STATP.NE.0) GO TO 998
STATP = DISPTD (1, DISP, DIS_MAXDIS, 2.0020D0, 2, 0)
IF (STATP.NE.0) GO TO 998
STATP = DISPTD (1, DISP, DIS_TOTDIS, 3.0000D0, 0, 0)
IF (STATP.NE.0) GO TO 998
* Print its contents.
CALL FLUSH(6)
STATP = DISPRT (1, DISP)
IF (STATP.NE.0) GO TO 998
WRITE (*, 70)
70 FORMAT (/,'------------------------------------',
: '------------------------------------')
* Copy it the long way first to test the various PUT and GET routines.
* Start by reading everything from the first.
STATP = DISGTI (1, DISP, DIS_NAXIS, NAXIS)
IF (STATP.NE.0) GO TO 998
STATP = DISGTC (1, DISP, DIS_DTYPE, DTYPE)
IF (STATP.NE.0) GO TO 998
STATP = DISGTI (1, DISP, DIS_NDP, NDP)
IF (STATP.NE.0) GO TO 998
STATP = DISGTD (1, DISP, DIS_DP, DP)
IF (STATP.NE.0) GO TO 998
STATP = DISGTD (1, DISP, DIS_MAXDIS, MAXDIS)
IF (STATP.NE.0) GO TO 998
STATP = DISGTD (1, DISP, DIS_TOTDIS, TOTDIS)
IF (STATP.NE.0) GO TO 998
* Initialize the destination. The first argument of DISPUT (and
* DISINI, etc.) is zero to indicate that DISL is an array (struct).
STATL = DISPTI (0, DISL, DIS_FLAG, -1, 0, 0)
IF (STATL.NE.0) GO TO 997
STATL = DISINI (0, NAXIS, DISL)
IF (STATL.NE.0) GO TO 997
* Copy to the destination.
JK = 0
JN = 0
DO 110 J = 1, NAXIS
STATL = DISPTD (0, DISL, DIS_DTYPE, DTYPE, J, 0)
IF (STATL.NE.0) GO TO 997
110 CONTINUE
DO 120 K = 1, NDP*DPLEN, DPLEN
STATL = DISPTI (0, DISL, DIS_DP, DP(K), 0, 0)
120 CONTINUE
DO 130 J = 1, NAXIS
STATL = DISPTI (0, DISL, DIS_MAXDIS, MAXDIS(J), J, 0)
IF (STATL.NE.0) GO TO 997
130 CONTINUE
STATL = DISPTI (0, DISL, DIS_TOTDIS, TOTDIS, J, 0)
IF (STATL.NE.0) GO TO 997
STATL = DISSET (0, DISL)
IF (STATL.NE.0) GO TO 997
* Print the second.
CALL FLUSH(6)
STATL = DISPRT (0, DISL)
IF (STATL.NE.0) GO TO 997
WRITE (*, 70)
* Now copy it the fast way.
* DISCPY's first argument indicates that the source, DISP, is a
* "pointer", and the destination, DISL, a local array. DISCPY
* will invoke DISINI on the destination, reusing memory allocated
* previously by DISINI and DISSET.
STATL = DISCPY (1, DISP, DISL)
IF (STATL.NE.0) GO TO 997
* A reset is required before printing.
STATL = DISSET (0, DISL)
IF (STATL.NE.0) GO TO 997
* Print the copy.
CALL FLUSH(6)
STATL = DISPRT (0, DISL)
IF (STATL.NE.0) GO TO 997
* Cleanup.
997 IF (STATL.NE.0) THEN
STATUS = DISPERR (0, DISL, CHAR(0))
END IF
* Free memory allocated in the disprm struct.
STATUS = DISFREE (0, DISL)
998 IF (STATP.NE.0) THEN
STATUS = DISPERR (1, DISP, CHAR(0))
END IF
* Free memory allocated by WCSPIH, WCSINI, etc.
999 STATUS = WCSVFREE (NWCS, WCSP)
* Free memory, allocated via the call to WCSSET, in the copy we made.
* Also frees allocated memory in the shallow copy we made of linprm.
STATUS = WCSFREE (WCS)
END
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