def _init_mpq_cache():
global mpq_cache, in_mpq_cache
mpq_cache = []
in_mpq_cache = cache_size
for _ in xrange(cache_size):
mpq = ffi.new("mpq_t")
gmp.mpq_init(mpq)
mpq_cache.append(mpq)
def _new_mpq():
"""Return an initialized mpq_t."""
global in_mpq_cache
if in_mpq_cache:
in_mpq_cache -= 1
return mpq_cache[in_mpq_cache]
else:
mpq = ffi.new("mpq_t")
gmp.mpq_init(mpq)
return mpq
