Chart of Fortran 2018 Features supported by GNU Fortran

Further interoperability of Fortran with C (TS 29113)

C descriptors

Yes (since 9.0, 2019-01-12)

Attribute codes

Yes (since 9.0, 2019-01-12)

The type CFI_dim_t

Yes (since 9.0, 2019-01-12)

Type codes

Yes (since 9.0, 2019-01-12)

Other constants

Yes (since 9.0, 2019-01-12)

Memory for a C descriptor

Yes (since 9.0, 2019-01-12)

C functions declared in ISO Fortran binding.h

Yes (since 9.0, 2019-01-12)

Interoperability of procedures

Yes (since 12.0?)

Lifetimes

n/a (restriction on user code)

Interoperability with the C type ptrdiff_t

Yes (since 4.8, 2012-07-21)

Changes to procedures in the iso_c_binding module

Yes (since 12.0?)

Assumed rank

Yes (since 9.0, 2019-01-12)

SELECT RANK

Yes (since 10.0, 2019-09-01)

Assumed type

Yes (since 4.8, 2012-03-03)

Allocatable dummy arguments of intent out

Yes (since 12.0?)

Contiguous attribute

Yes (since 12.0)

Optional arguments

Yes (since 4.7, 2011-05-06)

Asynchronous communication

Unknown

Additional parallel features in Fortran (TS 18508)

Teams

Partial (since 8.0)

Image failure

No

Form team statement

No

Change team construct

No

Coarrays allocated in teams

No

Critical construct

No

Lock and unlock statements

No

Events

Yes (since 6.0)

Sync team statement

No

Image selectors

No

Procedure calls and teams

No

Intrinsic functions get_team and team_number

No

Intrinsic function image_index

No

Intrinsic function num_images

No

Intrinsic function this_image

No

Intrinsic function move_alloc

No

Fail image statement

Yes (since 7.0)

Detecting failed and stopped images

Yes (since 7.0)

Collective subroutines

Yes (since 5.0)

New and enhanced atomic subroutines

Yes (since 5.0)

Failed images and stat= specifiers

No

Conformance with ISO/IEC/IEEE 60559:2011

Subnormal values

Yes (since 9)

Type for floating-point modes

Yes (since 13)

Rounding modes

Yes (since 13)

Rounded conversions

No

Fused multiply-add

Yes (since 13)

Test sign

Yes (since 13)

Conversion to integer type

No

Remainder function

Yes (since 13)

Maximum and minimum values

Yes (since 14)

Adjacent machine numbers

No

Comparisons

Yes (since 14)

Features that address deficiencies and discrepancies

Default accessibility for entities accessed from a module

No

Implicit none enhancement

Yes (since 5.0)

Referencing a property of an object in a constant expression

No

Enhancements to inquire

No

d0.d, e0.d, es0.d, en0.d, g0.d and ew.d e0 edit descriptors

No

Formatted input error conditions

No

Rules for generic procedures

No

Enhancements to stop and error stop

Partial (since 7.0), missing: PR84519

Intrinsics that access the computing environment

No

New elemental intrinsic function out_of_range

No

New reduction intrinsic reduce

No

Intrinsic functions image_index, lcobound, ucobound, and this_image

No

Intrinsic function coshape

No (PR99250)

Intrinsic subroutine random_init

Yes, (since 10)

Intrinsic function sign

No

Intrinsic functions extends_type_of and same_type_as

No

Detecting nonstandard intrinsics

No

Kind of the do variable in implied do

No

Locality clauses in do concurrent

No

Control of host association

No

Connect a file to more than one unit

Yes (since 10)

Advancing input with size=

No

Extension to the generic statement

No

The value attribute for an argument of a defined operation or assignment

No

Removal of anomalies regarding pure procedures

Partial (since 5.0)

Recursive and non-recursive procedures

No

Simplification of calls of the intrinsic cmplx

No

Removal of the restriction on argument dim of many intrinsic functions

No

Kinds of arguments of intrinsic and IEEE procedures

No

Hexadecimal input/output

No

Precision of stat= variables

No

Deletions

Yes (since 9.0)

New obsolescences

No (PR85839)