std::exp2

 

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Defined in header <cmath>
double      exp2( double n );		(since C++11)
float       exp2( float n );		(since C++11)
long double exp2( long double n );		(since C++11)
double      exp2( Integral n );		(since C++11)

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

exp	returns e raised to the given power (ex) (function)
log	computes natural (base e) logarithm (to base e) (ln(x)) (function)
pow	raises a number to the given power (xy) (function)