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Fortran 2008
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Fortran 2008 is a minor revision of Fortran 2003.
Also called Fortran ISO/IEC 2010
The final draft of the Fortran 2008 standard, ISO/IEC JTC 1/SC 22/WG 5/N1830, was released on June 7, 2010 and is available from the WG5's FTP server at <ftp://ftp.nag.co.uk/sc22wg5/N1801-N1850/N1830.pdf>.
For compiler support, see Fortran 2008 status.
- Summary of New Features
New features include:
- `do concurrent` construct
- `contiguous` attribute
- `block` construct
- `exit` statement
- `error stop` statement
- Internal procedures can be passed as actual arguments
- Procedure pointers can point to an internal procedure
- Maximum rank increased to 15
- `newunit=` in `open` statement
- `g0` edit descriptor
- Unlimited format item
Changes to existing Intrinsic procedures | intrinsic procedures:
- selected_real_kind now has a `radix=` argument.
New intrinsic procedures:
- Bitwise operations:
- Merging bits: merge_bits.
- Coarray intrinsics:
- Convert a cosubscript to an image index: image_index.
- Number of images: num_images.
- Image index or cosubscripts: this_image.
- Other:
- Test for the `contiguous` attribute: is_contiguous.
- Size of an element in bits: storage_size.
- Tests for the number of true values being odd: parity.
- Search for a value in an array: findloc.
- Shell commands: execute_command_line.
- Define and reference variables atomically: atomic_define and atomic_ref.
Additions to intrinsic modules:
-
- Information about the compiler: `compiler_version` and `compiler_options`.
- Named constants for selecting kind values.
-
- `ieee_selected_real_kind` now has a `radix=` argument.
-
- `c_sizeof` returns the size of an array element in bytes.
Declared Obsolete:
- `entry` (Fortran 77 and later)
- News
- Standards Documents
J3 Documents:
* Work Plan (http://j3-fortran.org/doc/year/07/07-010.html) * Schedule (http://j3-fortran.org/doc/year/07/07-005.html)
Latest draft accepted by the ISO Secretariat:
Previous drafts of the standard:
- ISO/IEC JTC 1/SC 22/WG 5/N1826 (ftp://ftp.nag.co.uk/sc22wg5/N1801-N1850/N1826.pdf) (April 20, 2010)
- ISO/IEC JTC 1/SC 22/WG 5/N1791 (ftp://ftp.nag.co.uk/sc22wg5/N1751-N1800/N1791.pdf) (August 28, 2009)
- ISO/IEC JTC 1/SC 22/WG 5/N1776 (ftp://ftp.nag.co.uk/sc22wg5/N1751-N1800/N1776.pdf) (March 25, 2009)
See Also
References
- ACM Fortran Forum* 27(2), 8-21. (See also [N1729](ftp://ftp.nag.co.uk/sc22wg5/N1701-N1750/N1729.pdf))
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