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| Next: <a href="ISO_005fC_005fBINDING.html#ISO_005fC_005fBINDING" accesskey="n" rel="next">ISO_C_BINDING</a>, Up: <a href="Intrinsic-Modules.html#Intrinsic-Modules" accesskey="u" rel="up">Intrinsic Modules</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="ISO_005fFORTRAN_005fENV-1"></a> |
| <h3 class="section">9.1 <code>ISO_FORTRAN_ENV</code></h3> |
| <dl compact="compact"> |
| <dt><em>Standard</em>:</dt> |
| <dd><p>Fortran 2003 and later, except when otherwise noted |
| </p></dd> |
| </dl> |
| |
| <p>The <code>ISO_FORTRAN_ENV</code> module provides the following scalar default-integer |
| named constants: |
| </p> |
| <dl compact="compact"> |
| <dt><code>ATOMIC_INT_KIND</code>:</dt> |
| <dd><p>Default-kind integer constant to be used as kind parameter when defining |
| integer variables used in atomic operations. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>ATOMIC_LOGICAL_KIND</code>:</dt> |
| <dd><p>Default-kind integer constant to be used as kind parameter when defining |
| logical variables used in atomic operations. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>CHARACTER_KINDS</code>:</dt> |
| <dd><p>Default-kind integer constant array of rank one containing the supported kind |
| parameters of the <code>CHARACTER</code> type. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>CHARACTER_STORAGE_SIZE</code>:</dt> |
| <dd><p>Size in bits of the character storage unit. |
| </p> |
| </dd> |
| <dt><code>ERROR_UNIT</code>:</dt> |
| <dd><p>Identifies the preconnected unit used for error reporting. |
| </p> |
| </dd> |
| <dt><code>FILE_STORAGE_SIZE</code>:</dt> |
| <dd><p>Size in bits of the file-storage unit. |
| </p> |
| </dd> |
| <dt><code>INPUT_UNIT</code>:</dt> |
| <dd><p>Identifies the preconnected unit identified by the asterisk |
| (<code>*</code>) in <code>READ</code> statement. |
| </p> |
| </dd> |
| <dt><code>INT8</code>, <code>INT16</code>, <code>INT32</code>, <code>INT64</code>:</dt> |
| <dd><p>Kind type parameters to specify an INTEGER type with a storage |
| size of 16, 32, and 64 bits. It is negative if a target platform |
| does not support the particular kind. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>INTEGER_KINDS</code>:</dt> |
| <dd><p>Default-kind integer constant array of rank one containing the supported kind |
| parameters of the <code>INTEGER</code> type. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>IOSTAT_END</code>:</dt> |
| <dd><p>The value assigned to the variable passed to the <code>IOSTAT=</code> specifier of |
| an input/output statement if an end-of-file condition occurred. |
| </p> |
| </dd> |
| <dt><code>IOSTAT_EOR</code>:</dt> |
| <dd><p>The value assigned to the variable passed to the <code>IOSTAT=</code> specifier of |
| an input/output statement if an end-of-record condition occurred. |
| </p> |
| </dd> |
| <dt><code>IOSTAT_INQUIRE_INTERNAL_UNIT</code>:</dt> |
| <dd><p>Scalar default-integer constant, used by <code>INQUIRE</code> for the |
| <code>IOSTAT=</code> specifier to denote an that a unit number identifies an |
| internal unit. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>NUMERIC_STORAGE_SIZE</code>:</dt> |
| <dd><p>The size in bits of the numeric storage unit. |
| </p> |
| </dd> |
| <dt><code>LOGICAL_KINDS</code>:</dt> |
| <dd><p>Default-kind integer constant array of rank one containing the supported kind |
| parameters of the <code>LOGICAL</code> type. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>OUTPUT_UNIT</code>:</dt> |
| <dd><p>Identifies the preconnected unit identified by the asterisk |
| (<code>*</code>) in <code>WRITE</code> statement. |
| </p> |
| </dd> |
| <dt><code>REAL32</code>, <code>REAL64</code>, <code>REAL128</code>:</dt> |
| <dd><p>Kind type parameters to specify a REAL type with a storage |
| size of 32, 64, and 128 bits. It is negative if a target platform |
| does not support the particular kind. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>REAL_KINDS</code>:</dt> |
| <dd><p>Default-kind integer constant array of rank one containing the supported kind |
| parameters of the <code>REAL</code> type. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>STAT_LOCKED</code>:</dt> |
| <dd><p>Scalar default-integer constant used as STAT= return value by <code>LOCK</code> to |
| denote that the lock variable is locked by the executing image. (Fortran 2008 |
| or later.) |
| </p> |
| </dd> |
| <dt><code>STAT_LOCKED_OTHER_IMAGE</code>:</dt> |
| <dd><p>Scalar default-integer constant used as STAT= return value by <code>UNLOCK</code> to |
| denote that the lock variable is locked by another image. (Fortran 2008 or |
| later.) |
| </p> |
| </dd> |
| <dt><code>STAT_STOPPED_IMAGE</code>:</dt> |
| <dd><p>Positive, scalar default-integer constant used as STAT= return value if the |
| argument in the statement requires synchronisation with an image, which has |
| initiated the termination of the execution. (Fortran 2008 or later.) |
| </p> |
| </dd> |
| <dt><code>STAT_UNLOCKED</code>:</dt> |
| <dd><p>Scalar default-integer constant used as STAT= return value by <code>UNLOCK</code> to |
| denote that the lock variable is unlocked. (Fortran 2008 or later.) |
| </p></dd> |
| </dl> |
| |
| <p>The module provides the following derived type: |
| </p> |
| <dl compact="compact"> |
| <dt><code>LOCK_TYPE</code>:</dt> |
| <dd><p>Derived type with private components to be use with the <code>LOCK</code> and |
| <code>UNLOCK</code> statement. A variable of its type has to be always declared |
| as coarray and may not appear in a variable-definition context. |
| (Fortran 2008 or later.) |
| </p></dd> |
| </dl> |
| |
| <p>The module also provides the following intrinsic procedures: |
| <a href="COMPILER_005fOPTIONS.html#COMPILER_005fOPTIONS">COMPILER_OPTIONS</a> and <a href="COMPILER_005fVERSION.html#COMPILER_005fVERSION">COMPILER_VERSION</a>. |
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