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import cffi
#
# This is only a demo based on the GMP library.
# There is a rather more complete (but perhaps outdated) version available at:
# http://bazaar.launchpad.net/~tolot-solar-empire/+junk/gmpy_cffi/files
#
ffibuilder = cffi.FFI()
ffibuilder.cdef("""
typedef struct { ...; } MP_INT;
typedef MP_INT mpz_t[1];
int mpz_init_set_str (MP_INT *dest_integer, char *src_cstring, int base);
void mpz_add (MP_INT *sum, MP_INT *addend1, MP_INT *addend2);
char * mpz_get_str (char *string, int base, MP_INT *integer);
""")
ffibuilder.set_source('_gmp_cffi', "#include <gmp.h>",
libraries=['gmp', 'm'])
if __name__ == '__main__':
ffibuilder.compile(verbose=True)
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