(gmp.info)Compatibility with older versions


Compatibility with older versions
=================================

   This version of GMP is upwardly binary compatible with all 3.x
versions, and upwardly compatible at the source level with all 2.x
versions, 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 reverted to the 2.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
4.  Please see the GMP 2 manual for details.

   The Berkeley MP compatibility library (Note: BSD Compatible
Functions) is source and binary compatible with the standard `libmp'.


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