HDF5 Fortran library documentation includes the following:

- HDF5 Fortran User Not= es
- HDF5 Fortran Datatypes, Flags and Functions
- HDF5 C/Fortran Ref= erence Manual
- New Features in the HDF5 F= ortran Library: Adding Support for the Fortran 2003 Standard (PDF only)=
- Examples

**Regarding Fortran environments:**

The HDF5 Fortran library requires a Fortran 2003 environment in HDF5-1.1=
0. If the Fortran compiler being used is Fortran 2003 compliant and th=
e installed HDF5 library was configured with the `--enable-fortran option, then the resulting HDF5 Fortran library will include the `

*Fo=
rtran 2003 environment*.

```
```##### HDF5-1.8:

Both Fortran 90 and Fortran 2003 environments are available. A small num=
ber of features are available only in Fortran 2003 environments, but most a=
re available in both. The `--enable-fortran2003`

flag must be sp=
ecifically included in addition to the`--enable-fortran`

option,=
in order to provide a *Fortran 2003 environment*. Without this opti=
on, the resulting HDF5 Fortran library uses a *Fortran 90 environment.*

*
*

**Regarding the HDF5 C/Fortran Reference Manual:**

Throughout the reference manual, each Fortran subroutine description is =
presented alongside the corresponding C function description.

- Subroutines labeled
*Fortran 90*, with no Fortran 2003 counterpa=
rt, are available in both Fortran 90 and Fortran 2003 environments.
- Subroutines labeled
*Fortran 2003*, with no Fortran 90 counterpa=
rt, are available only in Fortran 2003 environments.
- If both Fortran 90 and Fortran 2003 versions of a subroutine are presen=
ted, use the version appropriate to the Fortran environment in which the ap=
plication will be used.

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