diff options
Diffstat (limited to 'pkg/tbtables/fitsio/ftxiou.f')
| -rw-r--r-- | pkg/tbtables/fitsio/ftxiou.f | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftxiou.f b/pkg/tbtables/fitsio/ftxiou.f new file mode 100644 index 00000000..f75a1808 --- /dev/null +++ b/pkg/tbtables/fitsio/ftxiou.f @@ -0,0 +1,37 @@ +C------------------------------------------------------------------------------ + subroutine ftxiou(iounit,status) + +C generic routine to manage logical unit numbers in the range 50-99 + + integer iounit,status,i + integer*2 array(50) + save array + data array/50*0/ + + if (iounit .eq. 0)then +C get an unused logical unit number + do 10 i=50,1,-1 + if (array(i) .eq. 0)then + array(i)=1 + iounit=i+49 + return + end if +10 continue +C error: all units are allocated + iounit=-1 + status=114 + call ftpmsg('FTGIOU has no more available unit numbers.') + + else if (iounit .eq. -1)then +C deallocate all the unit numbers + do 20 i=1,50 + array(i)=0 +20 continue + + else +C deallocat a specific unit number + if (iounit .ge. 50 .and. iounit .le. 99)then + array(iounit-49)=0 + end if + endif + end |