[clean-list] Functions that look the same

RT Happe rthappe@mathematik.uni-freiburg.de
Thu, 19 Jul 2001 13:29:38 +0200 (CEST)


On Thu, 19 Jul 2001, Arjen wrote:
> Clean specifically, which is only 8 bytes in size. Compiler optimizations
> can also influence the result by changing a division by a multiplication
> with the reciprocal, which could be the case in the above example.

BTW, such non-conservative optimisations can be a major nuisance for
flonum programmers who want to rely on the specification of the
machine arithmetics (the IEC559/IEEE754 standard, if they're
lucky).  A compiler mode excluding such optimisations is highly
desirable.
  This is relevant in scientific computing, one of the less
glamorous areas of the real world.

rthappe