gcc/testsuite/gfortran.dg/pr17706.f90

   1 ! { dg-do run }
   2 ! { dg-options "-fno-sign-zero" }
   3 ! PR17706
   4 ! this is a libgfortran test
   5 ! output value -0.00 is not standard compliant
   6 ! derived from NIST F77 test FM406, with extra bits added.
   7 program pr17706
   8   implicit none
   9   character(len=10) :: s
  10   character(len=10), parameter :: x = "xxxxxxxxxx"
  11   real, parameter :: small = -0.0001
  12
  13   s = x
  14   write (s, '(F4.1)') small
  15   ! The plus is optional.  We choose not to display it.
  16   if (s .ne. " 0.0") STOP 1
  17
  18   s = x
  19   write (s, '(SS,F4.1)') small
  20   if (s .ne. " 0.0") STOP 2
  21
  22   s = x
  23   write (s, '(SP,F4.1)') small
  24   if (s .ne. "+0.0") STOP 3
  25 end program