[m-dev.] diff: clpr division and \==
Tyson Richard DOWD
trd at cs.mu.oz.au
Sun Sep 7 15:58:00 AEST 1997
Fergus Henderson wrote:
>
> clpr/cfloat.m:
> clpr/cfloat_float.m:
> clpr/float_cfloat.m:
> Add disequality constraints (\==).
> Fix division so that it handles division by zero properly;
> in particular, define `X/Y=Z' as if by `X=Y*Z, Y\==Z'
> rather than just `X=Y*Z', since the latter breaks referential
> transparency.
>
> clpr/cfloat.m:
> Remove the calls to save_transient_registers() and
> restore_transient_registers() from MR_cfloat_maybe_trail_solver(),
> because they are not needed.
>
One comment on this change:
> @@ -478,6 +476,8 @@
>
> bool ML_cfloat_eq(ML_svar, ML_svar);
> bool ML_cfloat_eq_float(ML_svar, Float);
> +/* bool ML_cfloat_diseq(ML_svar, ML_svar, bool&); */
> +/* bool ML_cfloat_diseq_float(ML_svar, Float, bool&); */
> bool ML_cfloat_gt(ML_svar, ML_svar);
> bool ML_cfloat_gt_float(ML_svar, Float);
> bool ML_cfloat_lt(ML_svar, ML_svar);
If these are just commented out because they are implemented as
macros, it would be best to say so.
--
Tyson Dowd # Another great idea from the
# people who brought you
trd at .cs.mu.oz.au # Beer Milkshakes!
http://www.cs.mu.oz.au/~trd # Confidence --- Red Dwarf
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