diff options
Diffstat (limited to 'gcc/testsuite/gfortran.dg/random_3.f90')
| -rw-r--r-- | gcc/testsuite/gfortran.dg/random_3.f90 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/random_3.f90 b/gcc/testsuite/gfortran.dg/random_3.f90 new file mode 100644 index 000000000..8e087c482 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/random_3.f90 @@ -0,0 +1,29 @@ +! { dg-do run } +! { dg-require-effective-target fortran_large_real } +! Check that the random_seed for real(10) or real(16) exists and that +! real(8) and real(10) or real(16) random number generators +! return the same sequence of values. +! Mostly copied from random_2.f90 +program random_4 + integer,parameter :: k = selected_real_kind (precision (0.0_8) + 1) + + integer, dimension(:), allocatable :: seed + real(kind=8), dimension(10) :: r8 + real(kind=k), dimension(10) :: r10 + real, parameter :: delta = 1.d-10 + integer n + + call random_seed (size=n) + allocate (seed(n)) + call random_seed (get=seed) + ! Test both array valued and scalar routines. + call random_number(r8) + call random_number (r8(10)) + + ! Reset the seed and get the real(8) values. + call random_seed (put=seed) + call random_number(r10) + call random_number (r10(10)) + + if (any ((r8 - r10) .gt. delta)) call abort +end program random_4 |