Issue #20873 has been updated by nobu (Nobuyoshi Nakada). Assignee set to nobu (Nobuyoshi Nakada) Backport changed from 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN to 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED ---------------------------------------- Bug #20873: `printf("%f")` returns wrong result for `Rational` with `FIXNUM_MIN` https://bugs.ruby-lang.org/issues/20873#change-110429 * Author: nobu (Nobuyoshi Nakada) * Status: Open * Assignee: nobu (Nobuyoshi Nakada) * Backport: 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED ---------------------------------------- Since the beginning, ruby 2.3. ```ruby require 'rbconfig/sizeof' fmin, fmax = RbConfig::LIMITS.values_at("FIXNUM_MIN", "FIXNUM_MAX") sprintf("%f", Rational(fmin, fmax)) #=> --1.000000 ``` -- https://bugs.ruby-lang.org/