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Manual Reference Pages  - selected_int_kind (3)

NAME
selected_int_kind(3f) - [FORTRAN:INTRINSIC:KIND] Choose integer kind

SYNTAX
result = selected_int_kind(r)

DESCRIPTION
selected_int_kind(r) return the kind value of the smallest integer type that can represent all values ranging from -10**R (exclusive) to 10**R (exclusive). If there is no integer kind that accommodates this range, selected_int_kind returns -1.

ARGUMENTS
R Shall be a scalar and of type INTEGER.

EXAMPLE
Sample program: 

   program demo_selected_int_kind
   implicit none
     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 demo_selected_int_kind

STANDARD
[[Fortran 95]] and later

CLASS
Transformational function

selected_int_kind (3) March 11, 2021
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