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view libcruft/misc/d1mach.f @ 8874:bd1b1fe9c6e9 ss-3-1-53
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author | John W. Eaton <jwe@octave.org> |
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date | Wed, 25 Feb 2009 18:35:47 -0500 |
parents | 337a09dd1c06 |
children | 32b15d5c3147 |
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double precision function d1mach (i) integer i logical init double precision dmach(5) save init, dmach data init /.false./ if (.not. init) then call machar (dmach(1), dmach(2), dmach(3), dmach(4), dmach(5)) init = .true. endif if (i .lt. 1 .or. i .gt. 5) goto 999 d1mach = dmach(i) return 999 write(*,1999) i 1999 format(' d1mach - i out of bounds', i10) call xstopx (' ') d1mach = 0 end