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erf

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Defined in header <math.h>
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<td >
float       erff( float arg );
</td>

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

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

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

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

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

Computes the error function of arg.

Contents

Parameters

arg - floating point value

Return value

The value of the error function of arg, that is
2
π
arg
0
e-t2
dt
.

Example

See also

Template:c/numeric/math/dcl list erfc

External links

Weisstein, Eric W. "Erf." From MathWorld--A Wolfram Web Resource.