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| <h3 class="section">8.230 <code>SPACING</code> — Smallest distance between two numbers of a given type</h3> |
| |
| <p><a name="index-SPACING-1055"></a><a name="index-real-number_002c-relative-spacing-1056"></a><a name="index-floating-point_002c-relative-spacing-1057"></a> |
| <dl> |
| <dt><em>Description</em>:<dd>Determines the distance between the argument <var>X</var> and the nearest |
| adjacent number of the same type. |
| |
| <br><dt><em>Standard</em>:<dd>Fortran 95 and later |
| |
| <br><dt><em>Class</em>:<dd>Elemental function |
| |
| <br><dt><em>Syntax</em>:<dd><code>RESULT = SPACING(X)</code> |
| |
| <br><dt><em>Arguments</em>:<dd> |
| <p><table summary=""><tr align="left"><td valign="top" width="15%"><var>X</var> </td><td valign="top" width="70%">Shall be of type <code>REAL</code>. |
| <br></td></tr></table> |
| |
| <br><dt><em>Return value</em>:<dd>The result is of the same type as the input argument <var>X</var>. |
| |
| <br><dt><em>Example</em>:<dd> |
| <pre class="smallexample"> PROGRAM test_spacing |
| INTEGER, PARAMETER :: SGL = SELECTED_REAL_KIND(p=6, r=37) |
| INTEGER, PARAMETER :: DBL = SELECTED_REAL_KIND(p=13, r=200) |
| |
| WRITE(*,*) spacing(1.0_SGL) ! "1.1920929E-07" on i686 |
| WRITE(*,*) spacing(1.0_DBL) ! "2.220446049250313E-016" on i686 |
| END PROGRAM |
| </pre> |
| <br><dt><em>See also</em>:<dd><a href="RRSPACING.html#RRSPACING">RRSPACING</a> |
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