8.69 EXP — Exponential function

Description:

EXP(X) computes the base e exponential of X.

Standard:

Fortran 77 and later, has overloads that are GNU extensions

Class:

Elemental function

Syntax:

RESULT = EXP(X)

Arguments:

X	The type shall be REAL or COMPLEX.

Return value:

The return value has same type and kind as X.

Example:

          program test_exp
            real :: x = 1.0
            x = exp(x)
          end program test_exp
     

Specific names:

Name	Argument	Return type	Standard
DEXP(X)	REAL(8) X	REAL(8)	Fortran 77 and later
CEXP(X)	COMPLEX(4) X	COMPLEX(4)	Fortran 77 and later
ZEXP(X)	COMPLEX(8) X	COMPLEX(8)	GNU extension
CDEXP(X)	COMPLEX(8) X	COMPLEX(8)	GNU extension