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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: tunits.f,v 7.4 2021/01/31 02:24:52 mcalabre Exp $
*=======================================================================
PROGRAM TUNITS
*-----------------------------------------------------------------------
*
* TUNITS tests WCSULEX, WCSUTRN, and WCSUNITS the FITS units
* specification parser, translator and converter.
*
*-----------------------------------------------------------------------
INCLUDE 'wcsunits.inc'
LOGICAL INTRCT
INTEGER FUNC, I, NC, STATUS
DOUBLE PRECISION OFFSET, POWER, SCALE, UNITS(WCSUNITS_NTYPE)
CHARACTER HAVE*80, WANT*80
*-----------------------------------------------------------------------
INTRCT = ISATTY(5)
WRITE (*, 10)
10 FORMAT ('Testing FITS unit specification parser (tunits.f)',/,
: '-------------------------------------------------')
IF (INTRCT) WRITE (*, 20)
20 FORMAT (/,'To test WCSULEX, enter <CR> when prompted with "Unit ',
: 'string (want):".')
30 CONTINUE
IF (INTRCT) WRITE (*, '(/,A,$)') 'Unit string (have): '
READ (*, '(A)', END=999) HAVE
NC = LNBLNK(HAVE)
IF (.NOT.INTRCT) WRITE (*, 40) HAVE(:NC)
40 FORMAT (/,'Unit string (have): ',A)
STATUS = WCSUTRN(7, HAVE)
IF (STATUS.GE.0) THEN
NC = LNBLNK(HAVE)
WRITE (*, 50) HAVE(:NC)
50 FORMAT (' Translation: ',A,$)
IF (STATUS.EQ.0) THEN
WRITE (*, '()')
ELSE
NC = LNBLNK(WCSUNITS_ERRMSG(STATUS))
WRITE (*, 60) WCSUNITS_ERRMSG(STATUS)(:NC)
60 FORMAT (' (WARNING: ',A,')')
END IF
END IF
IF (INTRCT) WRITE (*, '(A,$)') 'Unit string (want): '
READ (*, '(A)', END=999) WANT
IF (WANT.NE.' ') THEN
NC = LNBLNK(WANT)
IF (.NOT.INTRCT) WRITE (*, 70) WANT(:NC)
70 FORMAT ('Unit string (want): ',A)
STATUS = WCSUTRN(7, WANT)
IF (STATUS.GE.0) THEN
NC = LNBLNK(WANT)
WRITE (*, 50) WANT(:NC)
IF (STATUS.EQ.0) THEN
WRITE (*, '()')
ELSE
NC = LNBLNK(WCSUNITS_ERRMSG(STATUS))
WRITE (*, 60) WCSUNITS_ERRMSG(STATUS)(:NC)
END IF
END IF
WRITE (*, 80) HAVE(:LNBLNK(HAVE)), WANT(:LNBLNK(WANT))
80 FORMAT ('Conversion: "',A,'" -> "',A,'"')
STATUS = WCSUNITS (HAVE, WANT, SCALE, OFFSET, POWER)
IF (STATUS.NE.0) THEN
NC = LNBLNK(WCSUNITS_ERRMSG(STATUS))
WRITE (*, 90) STATUS, WCSUNITS_ERRMSG(STATUS)(:NC)
90 FORMAT ('WCSUNITS ERROR',I3,': ',A)
GO TO 30
END IF
IF (POWER.EQ.1D0) THEN
WRITE (*, '(A,$)') ' = '
ELSE
WRITE (*, '(A,$)') ' = ('
END IF
IF (SCALE.EQ.1.0) THEN
WRITE (*, '(A,$)') 'value'
ELSE
WRITE (*, '(1PG14.8,A,$)') SCALE, ' * value'
END IF
IF (OFFSET.NE.0D0) THEN
WRITE (*, '(A,1PG14.8,$)') ' + ', OFFSET
END IF
IF (POWER.EQ.1D0) THEN
WRITE (*, '()')
ELSE
WRITE (*, '(A,1PG12.6)') ')^', POWER
END IF
ELSE
* Parse the unit string.
NC = LNBLNK(HAVE)
WRITE (*, '(A,A,A)') ' Parsing: "', HAVE(:NC), '"'
STATUS = WCSULEX (HAVE, FUNC, SCALE, UNITS)
IF (STATUS.NE.0) THEN
NC = LNBLNK(WCSUNITS_ERRMSG(STATUS))
WRITE (*, 100) STATUS, WCSUNITS_ERRMSG(STATUS)(:NC)
100 FORMAT ('WCSULEX ERROR',I3,': ',A,'.')
GO TO 30
END IF
WRITE (*, '(1PG15.8,A)') SCALE, ' *'
DO 110 I = 1, WCSUNITS_NTYPE
IF (UNITS(I).NE.0.0) THEN
NC = LNBLNK(WCSUNITS_TYPES(I))
WRITE (*, '(F11.2,X,A,$)') UNITS(I),
: WCSUNITS_TYPES(I)(:NC)
IF (WCSUNITS_UNITS(I).NE.' ') THEN
NC = LNBLNK(WCSUNITS_UNITS(I))
WRITE (*, '(A,A,A)') ' (', WCSUNITS_UNITS(I)(:NC),')'
ELSE
WRITE (*, '()')
END IF
END IF
110 CONTINUE
END IF
GO TO 30
999 WRITE (*, '()')
END
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