exp2
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header <math.h>
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|   float       exp2f( float n );  | 
(since C99) | |
|   double      exp2( double n );  | 
(since C99) | |
|   long double exp2l( long double n );  | 
(since C99) | |
Computes 2 raised to the given power n
[edit] Parameters
| n | - | floating point value | 
[edit] 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.
[edit] See also
|    returns e raised to the given power (ex)   (function)  | |
|    computes natural (base e) logarithm (to base e) (ln(x))   (function)  | |
|    raises a number to the given power (xy)   (function)  | |
|   C++ documentation for exp2 
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