Hi, the GMP 6.0.0 documentation mentions mpn_mulmod_bnm1 in the Contributors section, but this function is not in the public API. Currently in GMP-ECM we use the internal function mpn_mul_fft for the "wraparound trick", but it would be better to use a documented function. Are there any plans to put mpn_mulmod_bnm1 in the public API? Paul