Calling Factor from C
Factor handbook ยป C library interface

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Callbacks can be defined and passed to C code as function pointers; the C code can then invoke the callback and run Factor code:
alien-callback ( return parameters abi quot -- alien )


There are some caveats concerning the conversion of Factor objects to C values, and vice versa. See Passing data between Factor and C.

See also
Byte arrays and the garbage collector