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Manual Reference Pages  - c_loc (3)

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NAME

c_loc(3f) - [FORTRAN:INTRINSIC:ISO_C_BINDING] Obtain the C address of an object

SYNTAX

result = c_loc(x)

DESCRIPTION

c_loc(x) determines the C address of the argument.

ARGUMENTS

X	Shall have either the POINTER or TARGET attribute. It shall not be a coindexed object. It shall either be a variable with interoperable type and kind type parameters, or be a scalar, nonpolymorphic variable with no length type parameters.

RETURN VALUE

The return value is of type c_ptr and contains the C address of the argument.

EXAMPLE

Sample program:

   subroutine association_test(a,b)
   use iso_c_binding, only: c_associated, c_loc, c_ptr
   implicit none
   real, pointer :: a
   type(c_ptr) :: b
     if(c_associated(b, c_loc(a))) &
        stop ’b and a do not point to same target’
   end subroutine association_test

STANDARD

[[Fortran 2003]] and later

CLASS

[[Inquiry function]]

SEE ALSO

c_associated(3), c_funloc(3), c_f_pointer(3), c_f_procpointer(3), iso_c_binding(3)

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c_loc (3)

March 11, 2021

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