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Commit 3acbdbe8 authored by Martin Bauer's avatar Martin Bauer
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Generalization of Chapman Enskog analysis

parent 96781a96
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......@@ -97,6 +97,37 @@ def fastSubs(term, subsDict):
return visit(term)
def fastSubsWithNormalize(term, subsDict, normalizeFunc):
def visit(expr):
if expr in subsDict:
return subsDict[expr], True
if not hasattr(expr, 'args'):
return expr, False
paramList = []
substituted = False
for a in expr.args:
replacedExpr, s = visit(a)
paramList.append(replacedExpr)
if s:
substituted = True
if not paramList:
return expr, False
else:
if substituted:
result, _ = visit(normalizeFunc(expr.func(*paramList)))
return result, True
else:
return expr.func(*paramList), False
if len(subsDict) == 0:
return term
else:
res, _ = visit(term)
return res
def replaceAdditive(expr, replacement, subExpression, requiredMatchReplacement=0.5, requiredMatchOriginal=None):
"""
Transformation for replacing a given subexpression inside a sum
......
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