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| <h4 class="subsection">6.1.8 <code>Q</code> exponent-letter</h4> |
| <a name="index-Q-exponent_002dletter"></a> |
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| <p>GNU Fortran accepts real literal constants with an exponent-letter |
| of <code>Q</code>, for example, <code>1.23Q45</code>. The constant is interpreted |
| as a <code>REAL(16)</code> entity on targets that support this type. If |
| the target does not support <code>REAL(16)</code> but has a <code>REAL(10)</code> |
| type, then the real-literal-constant will be interpreted as a |
| <code>REAL(10)</code> entity. In the absence of <code>REAL(16)</code> and |
| <code>REAL(10)</code>, an error will occur. |
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