FORTRAN
Load a 64-bit FORTRAN library in 64-bit Python (view the
FORTRAN source code).
To load the 32-bit library in 32-bit Python use '/fortran_lib32'
.
>>> from msl.loadlib import LoadLibrary
>>> from msl.examples.loadlib import EXAMPLES_DIR
>>> fortran = LoadLibrary(EXAMPLES_DIR + '/fortran_lib64')
Call the factorial
function. With a FORTRAN library you must pass values by
reference using ctypes
, and, since the returned value is not of type
ctypes.c_int
we must configure ctypes
for a value of type
ctypes.c_double
to be returned
>>> from ctypes import byref, c_int, c_double
>>> fortran.lib.factorial.restype = c_double
>>> fortran.lib.factorial(byref(c_int(37)))
1.3763753091226343e+43