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!/*-----------------------------------------------------------------*/
!/*!
! \file f77error.f
! \brief Example of usage of the error handler functions
! with a fortran compiler compliant with the fortran 77 standard
! This example generates errors.
! In a first step, on error, it displays a custom message using
! its own subroutine.
! In a second step, on error, the library displays the default error message
! but continues the execution.
! In a last step, on error, the library displays the default error message
! but exits.
! So the message "goodbye" is never displayed.
!
! \author M. Gastineau
! Astronomie et Systemes Dynamiques, IMCCE, CNRS, Observatoire de Paris.
!
! Copyright, 2010-2020, CNRS
! email of the author : Mickael.Gastineau@obspm.fr
!
!*/
!/*-----------------------------------------------------------------*/
!/*-----------------------------------------------------------------*/
!/* License of this file :
! This file is "triple-licensed", you have to choose one of the three licenses
! below to apply on this file.
!
! CeCILL-C
! The CeCILL-C license is close to the GNU LGPL.
! ( http://www.cecill.info/licences/Licence_CeCILL-C_V1-en.html )
!
! or CeCILL-B
! The CeCILL-B license is close to the BSD.
! (http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.txt)
!
! or CeCILL v2.1
! The CeCILL license is compatible with the GNU GPL.
! ( http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.html )
!
!
! This library is governed by the CeCILL-C, CeCILL-B or the CeCILL license under
! French law and abiding by the rules of distribution of free software.
! You can use, modify and/ or redistribute the software under the terms
! of the CeCILL-C,CeCILL-B or CeCILL license as circulated by CEA, CNRS and INRIA
! at the following URL "http://www.cecill.info".
!
! As a counterpart to the access to the source code and rights to copy,
! modify and redistribute granted by the license, users are provided only
! with a limited warranty and the software's author, the holder of the
! economic rights, and the successive licensors have only limited
! liability.
!
! In this respect, the user's attention is drawn to the risks associated
! with loading, using, modifying and/or developing or reproducing the
! software by the user in light of its specific status of free software,
! that may mean that it is complicated to manipulate, and that also
! therefore means that it is reserved for developers and experienced
! professionals having in-depth computer knowledge. Users are therefore
! encouraged to load and test the software's suitability as regards their
! requirements in conditions enabling the security of their systems and/or
! data to be ensured and, more generally, to use and operate it in the
! same conditions as regards security.
!
! The fact that you are presently reading this means that you have had
! knowledge of the CeCILL-C,CeCILL-B or CeCILL license and that you accept its terms.
!*/
!/*-----------------------------------------------------------------*/
!/*-----------------------------------------------------------------*/
!/* custom error handler */
!/*-----------------------------------------------------------------*/
subroutine myhandler(msg)
implicit none
character(len=*) :: msg
write (*,*) "The calceph calls the function myhandler"
write (*,*) "The message contains ",len(msg)," characters"
write(*,*) "The error message is :"
write(*,*) "----------------------"
write(*,*) msg
write(*,*) "----------------------"
write(*,*) "The error handler returns"
end
!/*-----------------------------------------------------------------*/
!/* empty error handler */
!/*-----------------------------------------------------------------*/
subroutine emptyhandler(msg)
implicit none
character(len=*) :: msg
end
!/*-----------------------------------------------------------------*/
!/* main program */
!/*-----------------------------------------------------------------*/
program f77error
implicit none
include 'f90calceph.h'
integer res
double precision jd0
double precision dt
double precision PV(6)
external myhandler, emptyhandler
! this date isnot in the example ephemeris file
jd0 = -2442457D10
dt = 0.5E0
! open the ephemeris file
res = f90calceph_sopen("example1.dat")
if (res.eq.1) then
write (*,*) "Step 1 :"
write (*,*) "it displays a custom message "
write (*,*) "using its own subroutine"
! set the error handler to use my own callback
call f90calceph_seterrorhandler(3, myhandler)
! call with an invalid time
res = f90calceph_scompute(jd0, dt, 10, 3, PV)
write (*,*)
write (*,*)
write (*,*) "Step 2 :"
write (*,*) "calceph library displays the message "
write (*,*) "but it continues"
! set the error handler to display error and continue
call f90calceph_seterrorhandler(1, emptyhandler)
! call with an invalid time
res = f90calceph_scompute(jd0, dt, 10, 3, PV)
write (*,*)
write (*,*)
write (*,*) "Step 3 :"
write (*,*) "calceph library displays the message "
write (*,*) "but the programs exits"
! set the error handler to stop on error
call f90calceph_seterrorhandler(2, emptyhandler)
! call with an invalid time
res = f90calceph_scompute(jd0, dt, 10, 3, PV)
write (*,*) "Goodbye"
write (*,*) "If you see this message, you find a bug !"
! close the ephemeris file
call f90calceph_sclose
else
write (*,*) "The ephemeris can't be opened"
endif
stop
end
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