<s>
ECLiPSe	B-Application
is	O
a	O
software	O
system	O
for	O
the	O
development	O
and	O
deployment	O
of	O
Constraint	B-Application
Programming	I-Application
applications	O
,	O
e.g.	O
</s>
<s>
in	O
the	O
areas	O
of	O
optimization	O
,	O
planning	O
,	O
scheduling	B-Application
,	O
resource	B-Algorithm
allocation	I-Algorithm
,	O
timetabling	O
,	O
transport	O
etc	O
.	O
</s>
<s>
problem	B-Application
modeling	I-Application
,	O
constraint	B-Application
programming	I-Application
,	O
mathematical	O
programming	O
,	O
and	O
search	B-Application
techniques	I-Application
.	O
</s>
<s>
It	O
contains	O
constraint	B-Application
solver	I-Application
libraries	O
,	O
a	O
high-level	O
modeling	O
and	O
control	O
language	O
(	O
a	O
superset	O
of	O
Prolog	B-Language
)	O
,	O
interfaces	O
to	O
third-party	O
solvers	O
,	O
an	O
integrated	O
development	O
environment	O
and	O
interfaces	O
for	O
embedding	O
into	O
host	O
environments	O
.	O
</s>
<s>
ECLiPSe	B-Application
was	O
developed	O
until	O
1995	O
at	O
the	O
European	O
Computer‐Industry	O
Research	O
Centre	O
(	O
ECRC	O
)	O
in	O
Munich	O
and	O
then	O
until	O
2005	O
at	O
the	O
Centre	O
for	O
Planning	O
and	O
Resource	O
Control	O
at	O
Imperial	O
College	O
London	O
(	O
IC-Parc	O
)	O
.	O
</s>
<s>
In	O
September	O
2006	O
,	O
it	O
was	O
released	O
as	O
open	B-Application
source	I-Application
software	I-Application
under	O
an	O
equivalent	O
of	O
the	O
Mozilla	B-License
Public	I-License
License	I-License
,	O
and	O
is	O
now	O
hosted	O
on	O
SourceForge	B-Application
.	O
</s>
<s>
The	O
ECLiPSe	B-Application
language	O
is	O
largely	O
backward-compatible	O
with	O
Prolog	B-Language
and	O
supports	O
different	O
dialects	O
,	O
including	O
ISO	O
Prolog	B-Language
.	O
</s>
<s>
Beyond	O
the	O
basic	O
Prolog	B-Language
data	O
types	O
,	O
the	O
following	O
are	O
available	O
:	O
strings	O
,	O
</s>
<s>
unlimited	B-Algorithm
precision	I-Algorithm
integer	I-Algorithm
and	O
rational	O
numbers	O
,	O
</s>
<s>
and	O
floating	B-Algorithm
point	I-Algorithm
intervals	I-Algorithm
.	O
</s>
<s>
are	O
also	O
supported	O
and	O
especially	O
useful	O
in	O
constraint	B-Application
modelling	O
.	O
</s>
<s>
ECLiPSe	B-Application
provides	O
comprehensive	O
facilities	O
to	O
implement	O
data-driven	B-Application
control	O
behaviour	O
.	O
</s>
<s>
logic	B-Language
programming	I-Language
language	I-Language
,	O
including	O
all	O
constraint-based	O
functionality	O
.	O
</s>
<s>
The	O
module	B-Architecture
system	I-Architecture
controls	O
the	O
visibility	O
of	O
predicates	O
,	O
non-logical	O
stores	O
,	O
source	O
transformations	O
and	O
syntax	O
settings	O
.	O
</s>
<s>
Module	B-Architecture
interfaces	O
can	O
be	O
extended	O
and	O
restricted	O
,	O
and	O
modules	B-Architecture
written	O
in	O
different	O
language	O
dialects	O
can	O
be	O
mixed	O
within	O
one	O
application	O
.	O
</s>
<s>
ECLiPSe	B-Application
provides	O
several	O
libraries	O
of	O
constraint	B-Application
solvers	I-Application
which	O
can	O
be	O
used	O
in	O
application	O
programs	O
:	O
</s>
<s>
Arithmetic	O
constraints	O
over	O
finite	O
domains	O
,	O
finite	O
set	O
constraints	O
,	O
generalized	O
propagation	O
,	O
interval	O
reasoning	O
over	O
non-linear	O
constraints	O
,	O
interfaces	O
to	O
external	O
simplex	O
solvers	O
,	O
constraint	B-Application
handling	I-Application
rules	I-Application
(	O
CHR	O
)	O
and	O
more	O
.	O
</s>
<s>
Other	O
libraries	O
implement	O
search	O
methods	O
like	O
branch-and-bound	B-Algorithm
,	O
repair-based	O
search	O
,	O
limited	O
discrepancy	O
search	O
.	O
</s>
<s>
and	O
the	O
Gecode	B-Application
solver	O
library	O
.	O
</s>
<s>
The	O
system	O
includes	O
an	O
incremental	O
compiler	O
which	O
translates	O
source	O
code	O
into	O
virtual	B-Application
machine	I-Application
code	O
.	O
</s>
<s>
management	O
with	O
garbage	B-General_Concept
collection	I-General_Concept
of	O
stacks	O
and	O
dictionary	O
,	O
event	O
handling	O
and	O
data-driven	B-Application
execution	O
.	O
</s>
<s>
Versions	O
of	O
ECLiPSe	B-Application
implement	O
OR-parallelism	O
.	O
</s>
<s>
ECLiPSe	B-Application
components	O
can	O
be	O
integrated	O
into	O
software	O
via	O
a	O
low-level	O
C	B-Language
or	O
C++	B-Language
interface	O
,	O
</s>
<s>
or	O
via	O
high-level	O
interfaces	O
to	O
Java	B-Language
and	O
Tcl	B-Operating_System
.	O
</s>
