Difference between revisions of "cpp/numeric/math/fdim"
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Revision as of 22:07, 2 November 2012
Template:ddcl list begin <tr class="t-dsc-header">
<td>Defined in header
</td>
<cmath>
<td></td> <td></td> </tr> <tr class="t-dcl ">
<td >float fdim( float x, float y );
</td>
<td > (1) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">
<td >double fdim( double x, double y );
</td>
<td > (2) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">
<td >long double fdim( long double x, long double y );
</td>
<td > (3) </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">
<td >Promoted fdim( Arithmetic x, Arithmetic y );
</td>
<td > (4) </td> <td > (since C++11) </td> </tr> Template:ddcl list end
Returns the positive difference between x and y. This could be implemented as fmax (x - y, 0), so if x ≤ y, the result is always equals to 0, otherwise it is x - y.
4) If any argument has integral type, it is cast to double. If any other argument is long double, then the return type is long double, otherwise it is double.
Parameters
| x, y | - | floating point value |
Return value
The positive difference value.
