static int my_algo(int n) {
return f1(3, n, n+1, n+2) + f1(1, &n) + f1(2, 12.3, 45.6);
}
""")
ffi.compile()
from _extern_python_cffi import ffi, lib
@ffi.def_extern()
def f(n, va):
if n == 3:
x = lib.fetch_int(va)
y = lib.fetch_int(va)
z = lib.fetch_int(va)
print (x, y, z)
elif n == 1:
ptr = lib.fetch_ptr(va)
print 'ptr to:', ffi.cast("int *", ptr)[0]
elif n == 2:
x = lib.fetch_double(va)
y = lib.fetch_double(va)
print (x, y)
else:
raise AssertionError(n)
return 14
print lib.my_algo(10)
}
""",
)
ffi.compile()
from _extern_python_cffi import ffi, lib
@ffi.def_extern()
def f(n, va):
if n == 3:
x = lib.fetch_int(va)
y = lib.fetch_int(va)
z = lib.fetch_int(va)
print (x, y, z)
elif n == 1:
ptr = lib.fetch_ptr(va)
print "ptr to:", ffi.cast("int *", ptr)[0]
elif n == 2:
x = lib.fetch_double(va)
y = lib.fetch_double(va)
print (x, y)
else:
raise AssertionError(n)
return 14
print lib.my_algo(10)
import cffi
ffi = cffi.FFI()
ffi.cdef("""int my_algo(int); extern "Python" int f(int);""")
ffi.set_source("_extern_python_cffi", """
static int f(int);
static int my_algo(int n) {
int i, sum = 0;
for (i = 0; i < n; i++)
sum += f(i);
return sum;
}
""")
ffi.compile()
from _extern_python_cffi import ffi, lib
@ffi.def_extern()
def f(n):
return n * n
assert lib.my_algo(10) == 0+1+4+9+16+25+36+49+64+81
