-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Denis Koroskin wrote: > On Sun, 17 May 2009 21:14:46 +0400, Andrei Alexandrescu > <[email protected]> wrote: > >> Hello, >> >> >> I think the floating-point operators: >> >> a !<>= b >> a !<> b >> a <> b >> a <>= b >> a !> b >> a !>= b >> a !< b >> a !<= b >> >> are useless. A simple peephole optimization in the compiler can >> automatically rewrite NaN test followed by regular operations into the >> operations above, for example: >> >> isNaN(a) || isNan(b) || a >= b >> >> is the same as >> >> a !< b >> >> This is in keeping with what the compiler does when seeing code like: >> >> a = x / y; >> b = x % y; >> >> There's a peephole optimization that groups the / and the % together >> into an assembler operation that does both. If this is the way to go, we >> better be congruent and use explicit isNaN tests (that are then >> optimized) instead of defining eight extra operators. >> >> >> Andrei > > Does anyone other than Don uses them at all? > I don't care if they are removed from D.
+vote Me too. isNaN is a lot easier to read. - -- My enormous talent is exceeded only by my outrageous laziness. http://www.ssTk.co.uk -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFKEEiET9LetA9XoXwRAiyPAJ9CaZhm8eLuvzwmbsGtDiboEzz+qACfR9kD AvlFq15dYJO91X6vyLkvJMw= =J5dd -----END PGP SIGNATURE-----
