gcc/testsuite/gfortran.dg/merge_bits_1.F90

   1 ! Test the MERGE_BITS intrinsic
   2 !
   3 ! { dg-do run }
   4 ! { dg-options "-ffree-line-length-none" }
   5
   6   interface run_merge
   7     procedure run_merge_1
   8     procedure run_merge_2
   9     procedure run_merge_4
  10     procedure run_merge_8
  11   end interface
  12
  13 #define CHECK(I,J,K) \
  14   if (merge_bits(I,J,K) /= ior(iand(I,K),iand(J,not(K)))) call abort ; \
  15   if (run_merge(I,J,K) /= merge_bits(I,J,K)) call abort
  16
  17   CHECK(13_1,18_1,22_1)
  18   CHECK(-13_1,18_1,22_1)
  19   CHECK(13_1,-18_1,22_1)
  20   CHECK(13_1,18_1,-22_1)
  21
  22   CHECK(13_2,18_2,22_2)
  23   CHECK(-13_2,18_2,22_2)
  24   CHECK(13_2,-18_2,22_2)
  25   CHECK(13_2,18_2,-22_2)
  26
  27   CHECK(13_4,18_4,22_4)
  28   CHECK(-13_4,18_4,22_4)
  29   CHECK(13_4,-18_4,22_4)
  30   CHECK(13_4,18_4,-22_4)
  31
  32   CHECK(13_8,18_8,22_8)
  33   CHECK(-13_8,18_8,22_8)
  34   CHECK(13_8,-18_8,22_8)
  35   CHECK(13_8,18_8,-22_8)
  36
  37 contains
  38
  39   function run_merge_1 (i, j, k) result(res)
  40     integer(kind=1) :: i, j, k, res
  41     res = merge_bits(i,j,k)
  42   end function
  43   function run_merge_2 (i, j, k) result(res)
  44     integer(kind=2) :: i, j, k, res
  45     res = merge_bits(i,j,k)
  46   end function
  47   function run_merge_4 (i, j, k) result(res)
  48     integer(kind=4) :: i, j, k, res
  49     res = merge_bits(i,j,k)
  50   end function
  51   function run_merge_8 (i, j, k) result(res)
  52     integer(kind=8) :: i, j, k, res
  53     res = merge_bits(i,j,k)
  54   end function
  55 end