<s>
The	O
Galahad	B-Application
library	I-Application
is	O
a	O
thread-safe	B-Operating_System
library	B-Library
of	O
packages	O
for	O
the	O
solution	O
of	O
mathematical	O
optimization	O
problems	O
.	O
</s>
<s>
The	O
areas	O
covered	O
by	O
the	O
library	B-Library
are	O
unconstrained	O
and	O
bound-constrained	B-Application
optimization	I-Application
,	O
quadratic	B-Algorithm
programming	I-Algorithm
,	O
nonlinear	B-Algorithm
programming	I-Algorithm
,	O
systems	O
of	O
nonlinear	O
equations	O
and	O
inequalities	O
,	O
and	O
non-linear	B-Algorithm
least	I-Algorithm
squares	I-Algorithm
problems	O
.	O
</s>
<s>
The	O
library	B-Library
is	O
mostly	O
written	O
in	O
the	O
Fortran	B-Application
90	I-Application
programming	O
language	O
.	O
</s>
<s>
The	O
name	O
of	O
the	O
library	B-Library
originates	O
from	O
its	O
major	O
package	O
for	O
general	O
nonlinear	B-Algorithm
programming	I-Algorithm
,	O
LANCELOT-B	O
,	O
the	O
successor	O
of	O
the	O
original	O
augmented	B-Algorithm
Lagrangian	I-Algorithm
package	O
LANCELOT	O
of	O
Conn	O
,	O
Gould	O
and	O
Toint	O
.	O
</s>
<s>
Other	O
packages	O
in	O
the	O
library	B-Library
include	O
:	O
</s>
<s>
an	O
active-set	O
method	O
for	O
nonconvex	O
quadratic	B-Algorithm
programming	I-Algorithm
,	O
</s>
<s>
a	O
primal-dual	O
interior-point	O
method	O
for	O
nonconvex	O
quadratic	B-Algorithm
programming	I-Algorithm
,	O
</s>
<s>
a	O
presolver	O
for	O
quadratic	B-Algorithm
programs	I-Algorithm
,	O
</s>
<s>
an	O
interior-point	O
method	O
to	O
solve	O
linear	B-Algorithm
programs	I-Algorithm
or	O
separable	O
convex	O
programs	O
or	O
alternatively	O
,	O
to	O
compute	O
the	O
analytic	O
center	O
of	O
a	O
set	O
defined	O
by	O
such	O
constraints	O
,	O
if	O
it	O
exists	O
.	O
</s>
<s>
Packages	O
in	O
the	O
GALAHAD	B-Application
library	I-Application
accept	O
problems	O
modeled	O
in	O
either	O
the	O
Standard	O
Input	O
Format	O
(	O
SIF	O
)	O
,	O
or	O
the	O
AMPL	B-Language
modeling	I-Language
language	I-Language
.	O
</s>
<s>
For	O
problems	O
modeled	O
in	O
the	O
SIF	O
,	O
the	O
GALAHAD	B-Application
library	I-Application
naturally	O
relies	O
upon	O
the	O
CUTEr	B-Application
package	O
,	O
an	O
optimization	O
toolbox	O
providing	O
all	O
low-level	O
functionalities	O
required	O
by	O
solvers	O
.	O
</s>
<s>
The	O
library	B-Library
is	O
available	O
on	O
several	O
popular	O
computing	O
platforms	O
,	O
including	O
Compaq	O
(	O
DEC	O
)	O
Alpha	O
,	O
Cray	O
,	O
HP	O
,	O
IBM	O
RS/6000	O
,	O
Intel-like	O
PCs	O
,	O
SGI	O
and	O
Sun	O
.	O
</s>
<s>
Support	O
is	O
provided	O
for	O
many	O
operating	O
systems	O
,	O
including	O
Tru64	B-Operating_System
,	O
Linux	B-Application
,	O
HP-UX	B-Application
,	O
AIX	B-Application
,	O
IRIX	B-Operating_System
and	O
Solaris	B-Application
,	O
and	O
for	O
a	O
variety	O
of	O
popular	O
Fortran	B-Application
90	I-Application
compilers	O
on	O
these	O
platforms	O
and	O
operating	O
systems	O
.	O
</s>
<s>
The	O
GALAHAD	B-Application
Library	I-Application
is	O
authored	O
and	O
maintained	O
by	O
N.I.M.	O
</s>
