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9. Intrinsic Procedures

1. Introduction

About GNU Fortran

GNU Fortran and G77

GNU Fortran and GCC

Introduction

Preprocessing and conditional compilation

Project Status

Standards

Varying Length Character Strings

6. Extensions

Alternate complex function syntax

Argument list functions %VAL, %REF and %LOC

BOZ literal constants

Commas in FORMAT specifications

CONVERT specifier

Cray pointers

ENCODE and DECODE statements

Extensions

Extensions implemented in GNU Fortran

Extensions not implemented in GNU Fortran

Extensions to namelist

Hollerith constants support

I/O item lists

Implicitly convert LOGICAL and INTEGER values

Missing period in FORMAT specifications

Old-style kind specifications

Old-style variable initialization

OpenACC

OpenMP

Q exponent-letter

Read/Write after EOF marker

Real array indices

STRUCTURE and RECORD

Unary operators

Variable FORMAT expressions

Volatile COMMON blocks

X format descriptor without count field

7. Mixed-Language Programming

Argument passing conventions

Derived Types and struct

Further Interoperability of Fortran with C

GNU Fortran Compiler Directives

Interoperability with C

Interoperable Global Variables

Interoperable Subroutines and Functions

Intrinsic Types

Mixed-Language Programming

Naming and argument-passing conventions

Naming conventions

Non-Fortran Main Program

Working with Pointers

_gfortran_set_args

_gfortran_set_convert

_gfortran_set_fpe

_gfortran_set_max_subrecord_length

_gfortran_set_options

_gfortran_set_record_marker

8. Coarray Programming

caf_register_t

caf_token_t

Coarray Programming

Function ABI Documentation

Type and enum ABI Documentation

_gfortran_caf_atomic_cas

_gfortran_caf_atomic_define

_gfortran_caf_atomic_op

_gfortran_caf_atomic_ref

_gfortran_caf_co_broadcast

_gfortran_caf_co_max

_gfortran_caf_co_min

_gfortran_caf_co_reduce

_gfortran_caf_co_sum

_gfortran_caf_deregister

_gfortran_caf_error_stop

_gfortran_caf_error_stop_str

_gfortran_caf_event_post

_gfortran_caf_event_query

_gfortran_caf_event_wait

_gfortran_caf_num_images

_gfortran_caf_register

_gfortran_caf_send

_gfortran_caf_sendget

_gfortran_caf_sync_all

_gfortran_caf_sync_images

_gfortran_caf_sync_memory

_gfortran_caf_this_image

5. Compiler Characteristics

Compiler Characteristics

Data consistency and durability

Files opened without an explicit ACTION= specifier

Internal representation of LOGICAL variables

KIND Type Parameters

Thread-safety of the runtime library

2. Command Options

Enable and customize preprocessing

Environment variables affecting gfortran

GNU Fortran Command Options

Influencing runtime behavior

Influencing the linking step

Option summary

Options controlling Fortran dialect

Options for code generation conventions

Options for debugging your program or GNU Fortran

Options for directory search

Options to request or suppress errors and warnings

4. Fortran 2003 and 2008 Status

Fortran 2003 and 2008 Status

Fortran 2003 status

Fortran 2008 status

Technical Specification 29113 Status

3. Runtime

GFORTRAN_CONVERT_UNIT

GFORTRAN_DEFAULT_RECL

GFORTRAN_ERROR_BACKTRACE

GFORTRAN_LIST_SEPARATOR

GFORTRAN_OPTIONAL_PLUS

GFORTRAN_UNBUFFERED_ALL

GFORTRAN_UNBUFFERED_PRECONNECTED

Runtime: Influencing runtime behavior with environment variables

TMPDIR

10. Intrinsic Modules

IEEE modules: IEEE_EXCEPTIONS, IEEE_ARITHMETIC, and IEEE_FEATURES

Intrinsic Modules

ISO_C_BINDING

ISO_FORTRAN_ENV

OpenACC Module OPENACC

OpenMP Modules OMP_LIB and OMP_LIB_KINDS

Index

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