Menelaos Karavelas 6e4ea5f23f [algorithms][turns] fix problem with less functor for turns; ...

In the previous implementation the fractions of the two turns where
compared first using operator< and then tested for equality using
math::equals; the consequence of this implementation is that it could
be possible to have two turns t1 and t2 whose fractions satisfied both
operator< and math::equals, which lead to the possibility of having both
less(t1, t2) and less(t2, t1) true; this behavior for less is wrong and
has produced failures on various compilers (especially when sorting);

The solution is to rearrange the code in the less functor so that
math::equals for the two fractions is checked first, that is before
the operator< is called; this makes the outcomes of less(t1, t2) and
less(t2, t1) always consistent with each other;

2015-07-24 10:27:04 +03:00

..

boost

[algorithms][turns] fix problem with less functor for turns;

2015-07-24 10:27:04 +03:00