This version of GMP is upwardly binary compatible with versions 3.0 and 3.0.1, and upwardly compatible at the source level with versions 2.0, 2.0.1, and 2.0.2, with the following exceptions.
mpn_gcd had its source arguments swapped as of GMP 3.0 for consistency
with other mpn functions.
mpf_get_prec counted precision slightly differently in GMP 3.0 and
3.0.1, but in 3.1 has reverted to the 2.0.x style.
There are a number of compatibility issues between GMP 1 and GMP 2 that of course also apply when porting applications from GMP 1 to GMP 3. Please see the GMP 2 manual for details.
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