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@*
NonConstantIPOperator.tmpl
Interaction-picture transverse derivative operator
Created by Graham Dennis on 2007-11-21.
Copyright (c) 2007-2012, Graham Dennis
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*@
@extends xpdeint.Operators._IPOperator
@from xpdeint.CallOnceGuards import callOncePerInstanceGuard
@attr $calculateOperatorFieldFunctionArguments = [('real', '_step'), ('int', '_exponent')]
@def globals
@#
@super
@#
real _${id}_last_timestep_size_map[${len($integrator.ipPropagationStepFractions)}];
@#
@end def
@@callOncePerInstanceGuard
@def initialise
@#
memset(_${id}_last_timestep_size_map, 0, sizeof(_${id}_last_timestep_size_map));
@#
@end def
@def calculateOperatorFieldFunctionContents($function)
@#
@if len($integrator.ipPropagationStepFractions) > 1
static const real _propagationStepFractions[] = {
@for $propagationStepFraction in $integrator.ipPropagationStepFractions
$propagationStepFraction,
@end for
};
const long _arrayIndex = _exponent - 1;
const real _propagationStepFraction = _propagationStepFractions[_arrayIndex];
@else
const real _propagationStepFraction = ${integrator.ipPropagationStepFractions[0]};
const long _arrayIndex = 0;
@end if
// If the timestep hasn't changed from the last time, then we're done.
if (_propagationStepFraction * _step == _${id}_last_timestep_size_map[_arrayIndex])
return;
@#
@super(function)
@#
_${id}_last_timestep_size_map[_arrayIndex] = _propagationStepFraction * _step;
@#
@end def
@def insideCalculateOperatorFieldLoops($codeString)
@#
${insideCalculateOperatorFieldLoopsBegin}@slurp
@#
@# We expect the integrator to have defined '_step'
@#
// The purpose of the following define is to give a (somewhat helpful) compile-time error
// if the user has attempted to use the propagation dimension variable in a constant IP operator/
// The user probably shouldn't be doing this, but if they must, they should use a non-constant EX
// operator instead
#define ${propagationDimension} Dont_use_propagation_dimension_${propagationDimension}_in_constant_IP_operator___Use_non_constant_EX_operator_instead
// ************** Operator code *****************
${codeString}@slurp
// **********************************************
#undef ${propagationDimension}
@# Loop over each operator component
@for $operatorComponentNumber, $operatorComponent in enumerate($operatorComponents.iterkeys())
_${operatorVector.id}[_${operatorVector.id}_index_pointer + _arrayIndex * $len($operatorComponents) + ${operatorComponentNumber}]@slurp
= ${expFunction}(${operatorComponent}${valueSuffix} * _propagationStepFraction * _step);
@end for
@#
@end def
@def exponentIndex
@#
(abs(_exponent) - 1) * ${len($operatorComponents)}@slurp
@#
@end def
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