On Wed, 25 Aug 2021, Frank Heckenbach wrote: > mpf_get_str seems to round incorrectly sometimes. > In this test program, the digits around 809 are "...244594553...", > so it should round to "...244595", but it outputs "...244594". Hello, if you care about correct rounding, I would recommend you use MPFR instead. -- Marc Glisse