GNU Octave  6.2.0
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
d1mach.f
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22  double precision function d1mach (i)
23  integer i
24  logical init
25  double precision dmach(5)
26  double precision dlamch
27  external dlamch
28  save init, dmach
29  data init /.false./
30  if (.not. init) then
31  dmach(1) = dlamch('u')
32  dmach(2) = dlamch('o')
33  dmach(3) = dlamch('e')
34  dmach(4) = dlamch('p')
35  dmach(5) = log10(dlamch('b'))
36  init = .true.
37  endif
38  if (i .lt. 1 .or. i .gt. 5) goto 999
39  d1mach = dmach(i)
40  return
41  999 write (*, 1999) i
42  1999 format (' d1mach - i out of bounds', i10)
43  call xstopx (' ')
44  d1mach = 0
45  end
double precision function d1mach(i)
Definition: d1mach.f:23