gcc/testsuite/gfortran.dg/minmax_char_1.f90

   1 ! Tests for MIN and MAX intrinsics with character arguments
   2 !
   3 ! { dg-do run }
   4 program test
   5   character(len=3), parameter :: sp = "gee"
   6   character(len=6), parameter :: tp = "crunch", wp = "flunch"
   7   character(len=2), parameter :: up = "az", vp = "da"
   8
   9   character(len=3) :: s
  10   character(len=6) :: t, w
  11   character(len=2) :: u, v
  12   s = "gee"
  13   t = "crunch"
  14   u = "az"
  15   v = "da"
  16   w = "flunch"
  17
  18   if (.not. equal(min("foo", "bar"), "bar")) call abort
  19   if (.not. equal(max("foo", "bar"), "foo")) call abort
  20   if (.not. equal(min("bar", "foo"), "bar")) call abort
  21   if (.not. equal(max("bar", "foo"), "foo")) call abort
  22
  23   if (.not. equal(min("bar", "foo", sp), "bar")) call abort
  24   if (.not. equal(max("bar", "foo", sp), "gee")) call abort
  25   if (.not. equal(min("bar", sp, "foo"), "bar")) call abort
  26   if (.not. equal(max("bar", sp, "foo"), "gee")) call abort
  27   if (.not. equal(min(sp, "bar", "foo"), "bar")) call abort
  28   if (.not. equal(max(sp, "bar", "foo"), "gee")) call abort
  29
  30   if (.not. equal(min("foo", "bar", s), "bar")) call abort
  31   if (.not. equal(max("foo", "bar", s), "gee")) call abort
  32   if (.not. equal(min("foo", s, "bar"), "bar")) call abort
  33   if (.not. equal(max("foo", s, "bar"), "gee")) call abort
  34   if (.not. equal(min(s, "foo", "bar"), "bar")) call abort
  35   if (.not. equal(max(s, "foo", "bar"), "gee")) call abort
  36
  37   if (.not. equal(min("", ""), "")) call abort
  38   if (.not. equal(max("", ""), "")) call abort
  39   if (.not. equal(min("", " "), " ")) call abort
  40   if (.not. equal(max("", " "), " ")) call abort
  41
  42   if (.not. equal(min(u,v,w), "az    ")) call abort
  43   if (.not. equal(max(u,v,w), "flunch")) call abort
  44   if (.not. equal(min(u,vp,w), "az    ")) call abort
  45   if (.not. equal(max(u,vp,w), "flunch")) call abort
  46   if (.not. equal(min(u,v,wp), "az    ")) call abort
  47   if (.not. equal(max(u,v,wp), "flunch")) call abort
  48   if (.not. equal(min(up,v,w), "az    ")) call abort
  49   if (.not. equal(max(up,v,w), "flunch")) call abort
  50
  51   call foo("gee   ","az    ",s,t,u,v)
  52   call foo("gee   ","az    ",s,t,u,v)
  53   call foo("gee   ","az    ",s,t,u)
  54   call foo("gee   ","crunch",s,t)
  55
  56 contains
  57
  58   subroutine foo(res_max, res_min, a, b, c, d)
  59     character(len=*) :: res_min, res_max
  60     character(len=*), optional :: a, b, c, d
  61
  62     if (.not. equal(min(a,b,c,d), res_min)) call abort
  63     if (.not. equal(max(a,b,c,d), res_max)) call abort
  64   end subroutine foo
  65
  66   pure function equal(a,b)
  67     character(len=*), intent(in) :: a, b
  68     logical :: equal
  69
  70     equal = (len(a) == len(b)) .and. (a == b)
  71   end function equal
  72
  73 end program test