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| <title>The GNU Fortran Compiler: MCLOCK</title> |
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| <a name="MCLOCK-_002d_002d_002d-Time-function"></a> |
| <h3 class="section">8.169 <code>MCLOCK</code> — Time function</h3> |
| <a name="index-MCLOCK"></a> |
| <a name="index-time_002c-clock-ticks"></a> |
| <a name="index-clock-ticks"></a> |
| |
| <dl compact="compact"> |
| <dt><em>Description</em>:</dt> |
| <dd><p>Returns the number of clock ticks since the start of the process, based |
| on the function <code>clock(3)</code> in the C standard library. |
| </p> |
| <p>This intrinsic is not fully portable, such as to systems with 32-bit |
| <code>INTEGER</code> types but supporting times wider than 32 bits. Therefore, |
| the values returned by this intrinsic might be, or become, negative, or |
| numerically less than previous values, during a single run of the |
| compiled program. |
| </p> |
| </dd> |
| <dt><em>Standard</em>:</dt> |
| <dd><p>GNU extension |
| </p> |
| </dd> |
| <dt><em>Class</em>:</dt> |
| <dd><p>Function |
| </p> |
| </dd> |
| <dt><em>Syntax</em>:</dt> |
| <dd><p><code>RESULT = MCLOCK()</code> |
| </p> |
| </dd> |
| <dt><em>Return value</em>:</dt> |
| <dd><p>The return value is a scalar of type <code>INTEGER(4)</code>, equal to the |
| number of clock ticks since the start of the process, or <code>-1</code> if |
| the system does not support <code>clock(3)</code>. |
| </p> |
| </dd> |
| <dt><em>See also</em>:</dt> |
| <dd><p><a href="CTIME.html#CTIME">CTIME</a>, <a href="GMTIME.html#GMTIME">GMTIME</a>, <a href="LTIME.html#LTIME">LTIME</a>, <a href="#MCLOCK">MCLOCK</a>, <a href="TIME.html#TIME">TIME</a> |
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