summaryrefslogtreecommitdiff
path: root/gcc/testsuite/gfortran.dg/integer_exponentiation_4.f90
blob: 655f6514c57950bf2b74da32a2ca700b2b52c2e8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
! { dg-do compile }
! { dg-options "" }
program test
  implicit none

!!!!!! INTEGER BASE !!!!!!
  print *, 0**0
  print *, 0**1
  print *, 0**(-1) ! { dg-error "Division by zero" }
  print *, 0**(huge(0))
  print *, 0**(-huge(0)-1) ! { dg-error "Division by zero" }
  print *, 0**(2_8**32)
  print *, 0**(-(2_8**32)) ! { dg-error "Division by zero" }

  print *, 1**huge(0)
  print *, 1**(-huge(0)-1)
  print *, 1**huge(0_8)
  print *, 1**(-huge(0_8)-1_8)
  print *, (-1)**huge(0)
  print *, (-1)**(-huge(0)-1)
  print *, (-1)**huge(0_8)
  print *, (-1)**(-huge(0_8)-1_8)

  print *, 2**huge(0) ! { dg-error "Arithmetic overflow" }
  print *, 2**huge(0_8) ! { dg-error "Arithmetic overflow" }
  print *, (-2)**huge(0) ! { dg-error "Arithmetic overflow" }
  print *, (-2)**huge(0_8) ! { dg-error "Arithmetic overflow" }

  print *, 2**(-huge(0)-1)
  print *, 2**(-huge(0_8)-1_8)
  print *, (-2)**(-huge(0)-1)
  print *, (-2)**(-huge(0_8)-1_8)

!!!!!! REAL BASE !!!!!!
  print *, 0.0**(-1) ! { dg-error "Arithmetic overflow" }
  print *, 0.0**(-huge(0)-1) ! { dg-error "Arithmetic overflow" }
  print *, 2.0**huge(0) ! { dg-error "Arithmetic overflow" }
  print *, nearest(1.0,-1.0)**(-huge(0)) ! { dg-error "Arithmetic overflow" }

!!!!!! COMPLEX BASE !!!!!!
  print *, (2.0,-4.3)**huge(0) ! { dg-error "Arithmetic overflow" }
  print *, (2.0,-4.3)**huge(0_8) ! { dg-error "Arithmetic overflow" }
  print *, (2.0,-4.3)**(-huge(0))
  print *, (2.0,-4.3)**(-huge(0_8))

end program test