Issue #11582 has been updated by jeremyevans0 (Jeremy Evans). Status changed from Open to Third Party's Issue This is an inconsistency in the default behavior of the Solaris pow function compared to other platforms. You could file this as a bug in the Illumios bug tracker (or raise an issue with Oracle Solaris support) if you would like them to change the behavior: https://www.illumos.org/projects/illumos-gate/issues ---------------------------------------- Bug #11582: On Solaris, Rational#** returns -Infinity for Rational(0) when passed a negative Float https://bugs.ruby-lang.org/issues/11582#change-103027 * Author: Eregon (Benoit Daloze) * Status: Third Party's Issue * Priority: Normal * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN ---------------------------------------- For instance,

Rational(0, 1) ** -1.0 => +Infinity on most platforms, -Infinity on Solaris by default.

The Rational is implicitly converted to the Float value 0.0, and the libm function pow(0.0, -1.0) is called. Should this kind of behavior be made consistent by Ruby or should we accept this as dependent on the libm/libc used? They are likely other edges cases for pow() which might differ, and I think in general Ruby should try to unify these cases so the behavior is consistent across platforms at least for arithmetic. For more details, please see https://github.com/ruby/rubyspec/issues/134 reported by ngoto. -- https://bugs.ruby-lang.org/