exp(x): Exponential¶

Exponential function.

Declaration¶

Syntax¶

retval = exp(x)
elemental real function exp(x)

Arguments¶

x the input value must be of type real or complex.

Return values¶

The return value is of same type as of the input argument, x.

Description¶

exp(x) computes the base $e$ exponential of x, i.e., $e^{x}$ .

If x is of type complex, its imaginary part is considered as a value in radians.

Types¶

Supported argument types is real and complex.

interface exp
    module procedure sexp, dexp, cexp, zexp
end interface

contains

elemental real(sp) function sexp(x)
real(sp), intent(in) :: x
end function

elemental real(dp) function dexp(x)
real(dp), intent(in) :: x
end function

elemental complex(sp) function cexp(x)
complex(sp), intent(in) :: x
end function

elemental complex(dp) function zexp(x)
complex(dp), intent(in) :: x
end function

Examples¶

program intrinsics_exp
	print *, exp(0.5)
end program

Result:

1.64872