gcc/testsuite/gfortran.dg/integer_exponentiation_2.f90

   1 ! { dg-do run }
   2 ! { dg-options "" }
   3 ! Test various exponentations
   4 ! initially designed for patch to PR31120
   5
   6 program test
   7   call run_me (1.0, 1, (1.0,0.0))
   8   call run_me (-1.1, -1, (0.0,-1.0))
   9   call run_me (42.0, 12, (1.0,7.0))
  10 end program test
  11
  12 ! This subroutine is for runtime tests
  13 subroutine run_me(a, i, z)
  14   implicit none
  15
  16   real, intent(in) :: a
  17   integer, intent(in) :: i
  18   complex, intent(in) :: z
  19
  20   call check_equal_i (i**0, 1)
  21   call check_equal_i (i**1, i)
  22   call check_equal_i (i**2, i*i)
  23   call check_equal_i (i**3, i*(i**2))
  24
  25   ! i has default integer kind.
  26   call check_equal_i (int(i**0_8,kind=kind(i)), 1)
  27   call check_equal_i (int(i**1_8,kind=kind(i)), i)
  28   call check_equal_i (int(i**2_8,kind=kind(i)), i*i)
  29   call check_equal_i (int(i**3_8,kind=kind(i)), i*i*i)
  30
  31   call check_equal_r (a**0.0, 1.0)
  32   call check_equal_r (a**1.0, a)
  33   call check_equal_r (a**2.0, a*a)
  34   call check_equal_r (a**3.0, a*(a**2))
  35   call check_equal_r (a**(-1.0), 1/a)
  36   call check_equal_r (a**(-2.0), (1/a)*(1/a))
  37
  38   call check_equal_r (a**0, 1.0)
  39   call check_equal_r (a**1, a)
  40   call check_equal_r (a**2, a*a)
  41   call check_equal_r (a**3, a*(a**2))
  42   call check_equal_r (a**(-1), 1/a)
  43   call check_equal_r (a**(-2), (1/a)*(1/a))
  44
  45   call check_equal_r (a**0_8, 1.0)
  46   call check_equal_r (a**1_8, a)
  47   call check_equal_r (a**2_8, a*a)
  48   call check_equal_r (a**3_8, a*(a**2))
  49   call check_equal_r (a**(-1_8), 1/a)
  50   call check_equal_r (a**(-2_8), (1/a)*(1/a))
  51
  52   call check_equal_c (z**0.0, (1.0,0.0))
  53   call check_equal_c (z**1.0, z)
  54   call check_equal_c (z**2.0, z*z)
  55   call check_equal_c (z**3.0, z*(z**2))
  56   call check_equal_c (z**(-1.0), 1/z)
  57   call check_equal_c (z**(-2.0), (1/z)*(1/z))
  58
  59   call check_equal_c (z**(0.0,0.0), (1.0,0.0))
  60   call check_equal_c (z**(1.0,0.0), z)
  61   call check_equal_c (z**(2.0,0.0), z*z)
  62   call check_equal_c (z**(3.0,0.0), z*(z**2))
  63   call check_equal_c (z**(-1.0,0.0), 1/z)
  64   call check_equal_c (z**(-2.0,0.0), (1/z)*(1/z))
  65
  66   call check_equal_c (z**0, (1.0,0.0))
  67   call check_equal_c (z**1, z)
  68   call check_equal_c (z**2, z*z)
  69   call check_equal_c (z**3, z*(z**2))
  70   call check_equal_c (z**(-1), 1/z)
  71   call check_equal_c (z**(-2), (1/z)*(1/z))
  72
  73   call check_equal_c (z**0_8, (1.0,0.0))
  74   call check_equal_c (z**1_8, z)
  75   call check_equal_c (z**2_8, z*z)
  76   call check_equal_c (z**3_8, z*(z**2))
  77   call check_equal_c (z**(-1_8), 1/z)
  78   call check_equal_c (z**(-2_8), (1/z)*(1/z))
  79
  80
  81 contains
  82
  83   subroutine check_equal_r (a, b)
  84     real, intent(in) :: a, b
  85     if (abs(a - b) > 1.e-5 * abs(b)) STOP 1
  86   end subroutine check_equal_r
  87
  88   subroutine check_equal_c (a, b)
  89     complex, intent(in) :: a, b
  90     if (abs(a - b) > 1.e-5 * abs(b)) STOP 2
  91   end subroutine check_equal_c
  92
  93   subroutine check_equal_i (a, b)
  94     integer, intent(in) :: a, b
  95     if (a /= b) STOP 3
  96   end subroutine check_equal_i
  97
  98 end subroutine run_me
  99
 100 ! subroutine foo is used for compilation test only
 101 subroutine foo(a)
 102   implicit none
 103
 104   real, intent(in) :: a
 105   integer :: i
 106   complex :: z
 107
 108   ! Integer
 109   call gee_i(i**0_1)
 110   call gee_i(i**1_1)
 111   call gee_i(i**2_1)
 112   call gee_i(i**3_1)
 113   call gee_i(i**(-1_1))
 114   call gee_i(i**(-2_1))
 115   call gee_i(i**(-3_1))
 116   call gee_i(i**huge(0_1))
 117   call gee_i(i**(-huge(0_1)))
 118   call gee_i(i**(-huge(0_1)-1_1))
 119
 120   call gee_i(i**0_2)
 121   call gee_i(i**1_2)
 122   call gee_i(i**2_2)
 123   call gee_i(i**3_2)
 124   call gee_i(i**(-1_2))
 125   call gee_i(i**(-2_2))
 126   call gee_i(i**(-3_2))
 127   call gee_i(i**huge(0_2))
 128   call gee_i(i**(-huge(0_2)))
 129   call gee_i(i**(-huge(0_2)-1_2))
 130
 131   call gee_i(i**0_4)
 132   call gee_i(i**1_4)
 133   call gee_i(i**2_4)
 134   call gee_i(i**3_4)
 135   call gee_i(i**(-1_4))
 136   call gee_i(i**(-2_4))
 137   call gee_i(i**(-3_4))
 138   call gee_i(i**huge(0_4))
 139   call gee_i(i**(-huge(0_4)))
 140   call gee_i(i**(-huge(0_4)-1_4))
 141
 142   call gee_i8(i**0_8)
 143   call gee_i8(i**1_8)
 144   call gee_i8(i**2_8)
 145   call gee_i8(i**3_8)
 146   call gee_i8(i**(-1_8))
 147   call gee_i8(i**(-2_8))
 148   call gee_i8(i**(-3_8))
 149   call gee_i8(i**huge(0_8))
 150   call gee_i8(i**(-huge(0_8)))
 151   call gee_i8(i**(-huge(0_8)-1_8))
 152
 153   ! Real
 154   call gee_r(a**0_1)
 155   call gee_r(a**1_1)
 156   call gee_r(a**2_1)
 157   call gee_r(a**3_1)
 158   call gee_r(a**(-1_1))
 159   call gee_r(a**(-2_1))
 160   call gee_r(a**(-3_1))
 161   call gee_r(a**huge(0_1))
 162   call gee_r(a**(-huge(0_1)))
 163   call gee_r(a**(-huge(0_1)-1_1))
 164
 165   call gee_r(a**0_2)
 166   call gee_r(a**1_2)
 167   call gee_r(a**2_2)
 168   call gee_r(a**3_2)
 169   call gee_r(a**(-1_2))
 170   call gee_r(a**(-2_2))
 171   call gee_r(a**(-3_2))
 172   call gee_r(a**huge(0_2))
 173   call gee_r(a**(-huge(0_2)))
 174   call gee_r(a**(-huge(0_2)-1_2))
 175
 176   call gee_r(a**0_4)
 177   call gee_r(a**1_4)
 178   call gee_r(a**2_4)
 179   call gee_r(a**3_4)
 180   call gee_r(a**(-1_4))
 181   call gee_r(a**(-2_4))
 182   call gee_r(a**(-3_4))
 183   call gee_r(a**huge(0_4))
 184   call gee_r(a**(-huge(0_4)))
 185   call gee_r(a**(-huge(0_4)-1_4))
 186
 187   call gee_r(a**0_8)
 188   call gee_r(a**1_8)
 189   call gee_r(a**2_8)
 190   call gee_r(a**3_8)
 191   call gee_r(a**(-1_8))
 192   call gee_r(a**(-2_8))
 193   call gee_r(a**(-3_8))
 194   call gee_r(a**huge(0_8))
 195   call gee_r(a**(-huge(0_8)))
 196   call gee_r(a**(-huge(0_8)-1_8))
 197
 198   ! Complex
 199   call gee_z(z**0_1)
 200   call gee_z(z**1_1)
 201   call gee_z(z**2_1)
 202   call gee_z(z**3_1)
 203   call gee_z(z**(-1_1))
 204   call gee_z(z**(-2_1))
 205   call gee_z(z**(-3_1))
 206   call gee_z(z**huge(0_1))
 207   call gee_z(z**(-huge(0_1)))
 208   call gee_z(z**(-huge(0_1)-1_1))
 209
 210   call gee_z(z**0_2)
 211   call gee_z(z**1_2)
 212   call gee_z(z**2_2)
 213   call gee_z(z**3_2)
 214   call gee_z(z**(-1_2))
 215   call gee_z(z**(-2_2))
 216   call gee_z(z**(-3_2))
 217   call gee_z(z**huge(0_2))
 218   call gee_z(z**(-huge(0_2)))
 219   call gee_z(z**(-huge(0_2)-1_2))
 220
 221   call gee_z(z**0_4)
 222   call gee_z(z**1_4)
 223   call gee_z(z**2_4)
 224   call gee_z(z**3_4)
 225   call gee_z(z**(-1_4))
 226   call gee_z(z**(-2_4))
 227   call gee_z(z**(-3_4))
 228   call gee_z(z**huge(0_4))
 229   call gee_z(z**(-huge(0_4)))
 230   call gee_z(z**(-huge(0_4)-1_4))
 231
 232   call gee_z(z**0_8)
 233   call gee_z(z**1_8)
 234   call gee_z(z**2_8)
 235   call gee_z(z**3_8)
 236   call gee_z(z**(-1_8))
 237   call gee_z(z**(-2_8))
 238   call gee_z(z**(-3_8))
 239   call gee_z(z**huge(0_8))
 240   call gee_z(z**(-huge(0_8)))
 241   call gee_z(z**(-huge(0_8)-1_8))
 242 end subroutine foo
 243
 244 subroutine gee_i(i)
 245   integer :: i
 246 end subroutine gee_i
 247
 248 subroutine gee_i8(i)
 249   integer(kind=8) :: i
 250 end subroutine gee_i8
 251
 252 subroutine gee_r(r)
 253   real :: r
 254 end subroutine gee_r
 255
 256 subroutine gee_z(c)
 257   complex :: c
 258 end subroutine gee_z