gcc/testsuite/gfortran.dg/read_infnan_1.f90

   1 ! { dg-do run }
   2 ! { dg-add-options ieee }
   3 ! { dg-skip-if "NaN not supported" { spu-*-* } { "*" } { "" } }
   4
   5 ! PR43298  Fortran library does not read in NaN, NaN(), -Inf, or Inf
   6
   7 ! Formatted READ part of PR fortran/43298
   8
   9 ! Test case prepared by Jerry DeLisle  <jvdelisle@gcc.gnu.org>
  10 program pr43298
  11   real(4) :: x4(7)
  12   real(8) :: x8(7)
  13   character(80) :: output
  14
  15 open(10, status='scratch')
  16 !                0123456789012345678901234567890123456789012345678901234567890123456789
  17 write(10,'(a)') "inf           nan   infinity  NaN(dx)      -INf    NAN       InFiNiTy"
  18 rewind(10)
  19 x4 = 0.0_4
  20 x8 = 0.0_8
  21 read(10,'(7f10.3)') x4
  22 rewind(10)
  23 read(10,'(7f10.3)') x8
  24 write (output, '("x4 =",7G6.0)') x4
  25 if (output.ne."x4 =   Inf   NaN   Inf   NaN  -Inf   NaN   Inf") call abort
  26 write (output, '("x8 =",7G6.0)') x8
  27 if (output.ne."x8 =   Inf   NaN   Inf   NaN  -Inf   NaN   Inf") call abort
  28 !print '("x4 =",7G6.0)', x4
  29 !print '("x8 =",7G6.0)', x8
  30 end program pr43298
  31