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std::exp2

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

<td>
Defined in header <cmath>
</td>

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

<td >
double      exp2( double n );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">

<td >
float       exp2( float n );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">

<td >
long double exp2( long double n );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C++11) </td> </tr> <tr class="t-dcl ">

<td >
double      exp2( Integral n );
</td>

<td class="t-dcl-nopad"> </td> <td > (since C++11) </td> </tr> Template:ddcl list end

Computes 2 raised to the given power n

Parameters

n - floating point value

Return value

2 raised to the n (i.e. 2n)

If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.

See also

Template:cpp/numeric/math/dcl list expTemplate:cpp/numeric/math/dcl list log2Template:cpp/numeric/math/dcl list logTemplate:cpp/numeric/math/dcl list pow