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Iterate.hpp
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Mon, Sep 9, 16:48
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Wed, Sep 11, 16:48 (1 d, 23 h)
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rGOOSEFEM GooseFEM
Iterate.hpp
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/* =================================================================================================
(c - GPLv3) T.W.J. de Geus (Tom) | tom@geus.me | www.geus.me | github.com/tdegeus/GooseFEM
================================================================================================= */
#ifndef GOOSEFEM_ITERATE_CPP
#define GOOSEFEM_ITERATE_CPP
// -------------------------------------------------------------------------------------------------
#include "Iterate.h"
// ======================================= GooseFEM::Iterate =======================================
namespace
GooseFEM
{
namespace
Iterate
{
// -------------------------------------------------------------------------------------------------
inline
StopList
::
StopList
(
size_t
n
)
{
// resize list
m_res
.
resize
(
n
);
// set all residual to infinity
reset
();
}
// -------------------------------------------------------------------------------------------------
inline
void
StopList
::
reset
()
{
// set all residual to infinity
for
(
auto
&
i
:
m_res
)
i
=
std
::
numeric_limits
<
double
>::
infinity
();
}
// -------------------------------------------------------------------------------------------------
inline
void
StopList
::
reset
(
size_t
n
)
{
// resize list
m_res
.
resize
(
n
);
// set all residual to infinity
reset
();
}
// -------------------------------------------------------------------------------------------------
inline
bool
StopList
::
stop
(
double
res
,
double
tol
)
{
// move residual one place back (forgetting the first)
for
(
size_t
i
=
1
;
i
<
m_res
.
size
()
;
++
i
)
m_res
[
i
-
1
]
=
m_res
[
i
];
// add new residual to the end
m_res
[
m_res
.
size
()
-
1
]
=
res
;
// check for convergence: all residuals should be below the tolerance
for
(
size_t
i
=
0
;
i
<
m_res
.
size
()
;
++
i
)
if
(
m_res
[
i
]
>
tol
)
return
false
;
// check for convergence: all residuals should be decreasing
for
(
size_t
i
=
1
;
i
<
m_res
.
size
()
;
++
i
)
if
(
m_res
[
i
]
>
m_res
[
i
-
1
]
)
return
false
;
// all checks passed: signal convergence
return
true
;
}
// -------------------------------------------------------------------------------------------------
}}
// namespace ...
// =================================================================================================
#endif
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