Namespaces
Variants
Views
Actions

round, lround, llround

From cppreference.com
< c‎ | numeric‎ | math
Revision as of 19:13, 2 November 2012 by P12bot (Talk | contribs)

 
 
 
Common mathematical functions
Functions
Basic operations
(C99)
(C99)
(C99)
(C99)
(C99)
(C99)(C99)(C99)
Exponential functions
(C99)
(C99)
(C99)
(C99)
Power functions
(C99)
(C99)
Trigonometric and hyperbolic functions
(C99)
(C99)
(C99)
Error and gamma functions
(C99)
(C99)
(C99)
(C99)
Nearest integer floating point operations
roundlroundllround
(C99)(C99)(C99)
(C99)
(C99)(C99)(C99)
Floating point manipulation functions
(C99)(C99)
(C99)
(C99)
Classification
(C99)
(C99)
(C99)
Macro constants
 

Template:ddcl list begin <tr class="t-dsc-header">

<td>
Defined in header <math.h>
</td>

<td></td> <td></td> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
float       roundf( float arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
double      round( double arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
long double roundl( long double arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
long      lroundf( float arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
long      lround( double arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
long      lroundl( long double arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
long long llroundf( float arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
long long llround( double arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl-sep"><td></td><td></td><td></td></tr>

<tr class="t-dcl ">

<td >
long long llroundl( long double arg );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> Template:ddcl list end

Computes nearest integer to arg. Number is rounded away from zero in halfway cases

Parameters

arg - floating point value

Return value

Nearest integer to arg.

See also

Template:c/numeric/math/dcl list floorTemplate:c/numeric/math/dcl list ceilTemplate:c/numeric/math/dcl list trunc