std::exp2

 

C++

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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

expexpfexpl (C++11)(C++11)	returns e raised to the given power (\({\small e^x}\)ex) (function)
log2log2flog2l (C++11)(C++11)(C++11)	base 2 logarithm of the given number (\({\small\log_{2}{x}}\)log2(x)) (function)
loglogflogl (C++11)(C++11)	computes natural (base e) logarithm (\({\small\ln{x}}\)ln(x)) (function)
powpowfpowl (C++11)(C++11)	raises a number to the given power (\(\small{x^y}\)xy) (function)
C documentation for exp2