Vincent Lefevre <vincent+gmp at vinc17.org> writes: According to the GMP 4.3.2 source, mpn_sqr_n doesn't appear at all in gmp.h; there's just a mpn_sqr_n macro in gmp-impl.h, so that I don't see how it could be used under normal use, even though it was documented. Somebody must have read the 4.3.2 documentation, but used an older GMP release. -- Torbjörn