Fortran Wiki
selected_int_kind (changes)

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Description

(削除) selected_int_kind(i) (削除ここまで)(追記) selected_int_kind(r) (追記ここまで) return the kind value of the smallest integer type that can represent all values ranging from $-{10}^{\mathrm{<span><del>(削除)\; I\; (削除ここまで)</del><ins>(追記)\; R\; (追記ここまで)</ins></span>}}$(削除) -10^I (削除ここまで)(追記) -10^R (追記ここまで) (exclusive) to ${10}^{\mathrm{<span><del>(削除)\; I\; (削除ここまで)</del><ins>(追記)\; R\; (追記ここまで)</ins></span>}}$(削除) 10^I (削除ここまで)(追記) 10^R (追記ここまで) (exclusive). If there is no integer kind that accommodates this range, selected_int_kind returns $-1$.

Standard

Fortran 95 and later

Class

Transformational function

Syntax

result = selected_int_kind(r)

Arguments

• (削除) i (削除ここまで)(追記) r (追記ここまで) - Shall be a scalar and of type integer.

Example

program large_integers
 integer,parameter :: k5 = selected_int_kind(5)
 integer,parameter :: k15 = selected_int_kind(15)
 integer(kind=k5) :: i5
 integer(kind=k15) :: i15
 print *, huge(i5), huge(i15)
 ! the following inequalities are always true
 print *, huge(i5) >= 10_k5**5-1
 print *, huge(i15) >= 10_k15**15-1
end program large_integers