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PSI sics-cvs-psi_pre-ansto

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koennecke
2003-06-13 00:00:00 +00:00
committed by Douglas Clowes
parent 2e3ddfb6c6
commit 3ffd0d8af4
1099 changed files with 318432 additions and 0 deletions
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43
tecs/sys_lun.f Executable file
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!!-----------------------------------------------------------------------------
!!
subroutine SYS_GET_LUN(LUN) !!
!!
!! allocate logical unit number
!!
integer LUN !! out
logical*1 act(50:100)/51*.false./
common /sys_lun/act
integer l
l=50
do while (l .lt. 99 .and. act(l))
l=l+1
enddo
if (l .eq. 100) stop 'SYS_GET_LUN: no more luns available'
lun=l
act(l)=.true.
end
!!-----------------------------------------------------------------------------
!!
subroutine SYS_FREE_LUN(LUN) !!
!!
!! deallocate logical unit number
!!
integer LUN !! in
logical*1 act(50:100)/51*.false./
common /sys_lun/act
if (lun .lt. 50 .or. lun .gt. 99) then
stop 'SYS_FREE_LUN: illegal lun'
endif
if (act(lun)) then
act(lun)=.false.
else
stop 'SYS_FREE_LUN: lun already free'
endif
end