Nested function calls in Fortran?

[vmagnin]

@rdryne

Error: GNU Extension: Nonstandard type declaration REAL*8 at (1)

Yes, *8 is non standard, although a classical extension. REAL(8) or REAL(kind=8) is standard, but read that post for still better solutions:

Best way to declare a double precision in Fortran?

Hi, there is several ways to declare a double precision real in Fortran: real*8 :: w real(8) :: x real(kind(0d0)) :: y double precision :: z My habits are to use double precision. Is it a good practice ?