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| <h3 class="section">1.27 <code>hypot</code>, <code>hypotf</code>—distance from origin</h3> |
| |
| <p><a name="index-hypot-73"></a><a name="index-hypotf-74"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <math.h> |
| double hypot(double <var>x</var>, double <var>y</var>); |
| float hypotf(float <var>x</var>, float <var>y</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| <code>hypot</code> calculates the Euclidean distance |
| <code>sqrt(</code><var>x</var><code>*</code><var>x</var><code> + </code><var>y</var><code>*</code><var>y</var><code>)</code> |
| between the origin (0,0) and a point represented by the |
| Cartesian coordinates (<var>x</var>,<var>y</var>). <code>hypotf</code> differs only |
| in the type of its arguments and result. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| Normally, the distance value is returned. On overflow, |
| <code>hypot</code> returns <code>HUGE_VAL</code> and sets <code>errno</code> to |
| <code>ERANGE</code>. |
| |
| <p>You can change the error treatment with <code>matherr</code>. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>hypot</code> and <code>hypotf</code> are not ANSI C. |
| <br> |
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