CODEWITHSUNDEEP
fortran
astromonerd
astromonerd

Reputation: 937

Fortran: Integer too big for its kind

I am setting an integer to a value less than its maximum, but receiving an error that it is too big for it's kind. Why is this? Here is a sample program. 

program max_int

integer, parameter :: i32 = selected_int_kind(32)

integer(kind = i32) :: my_int

!The largest integer of this kind
print*, huge(my_int)

!This works
my_int = 100000

!This doesn't, and gives an error.
!my_int = 1000000000000

print*, my_int

end program

Upvotes: 2

Views: 3584

Answers (1)

dwwork
dwwork

Reputation: 858

You need to append the i32 to 1000000000000 like this: 1000000000000_i32. gfortran complains that the number is too big for it's kind. 1000000000000 is a short integer, not a super long integer. 1000000000000_i32 is a super long integer. It is not complaining about the variable, it's complaining about the constant.

Upvotes: 7

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