Description:  Computes an exponential value.  
Class:  Elemental function; Generic  
Arguments:  X must be of type real or complex.  
Results:  The result type is the same as X. The value of the result is e^{x}. If X is of type complex, its imaginary part is regarded as a value in radians. 
Specific Name  Argument Type  Result Type 

EXP  REAL(4)  REAL(4) 
DEXP  REAL(8)  REAL(8) 
QEXP  REAL(16)  REAL(16) 
CEXP[1]  COMPLEX(4)  COMPLEX(4) 
CDEXP[2]  COMPLEX(8)  COMPLEX(8) 
[1] The setting of compiler options specifying
real size can affect CEXP.

Examples
EXP (2.0) has the value 7.389056.
EXP (1.3) has the value 3.669297.