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Pass simplify flag to _jac in tangent_vector_f #65

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Merged
Wrzlprmft merged 2 commits into from
Apr 6, 2026
Merged

Pass simplify flag to _jac in tangent_vector_f #65

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b8d75aa
Pass simplify flag to _jac
alexfikl Apr 2, 2026
601fa3b
Update _jitcdde.py
Wrzlprmft Apr 6, 2026
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9 changes: 5 additions & 4 deletions jitcdde/_jitcdde.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1043,18 +1043,19 @@ def jump( self, amplitude, time, width=1e-5, forward=True ):
else:
return self.DDE.apply_jump( amplitude, time-width, width )

def _jac(f, helpers, delay, n):
def _jac(f, helpers, delay, n, simplify=True):
dependent_helpers = [
find_dependent_helpers(helpers,y(i,t-delay))
for i in range(n)
]

def line(f_entry):
f_entry = f_entry.simplify()
for j in range(n):
entry = f_entry.diff(y(j,t-delay))
for helper in dependent_helpers[j]:
entry += f_entry.diff(helper[0]) * helper[1]
if simplify:
entry = entry.simplify()
yield entry

for f_entry in f():
Expand All @@ -1067,7 +1068,7 @@ def f_lyap():
yield from f()

for i in range(n_lyap):
jacs = [_jac(f, helpers, delay, n) for delay in delays]
jacs = [_jac(f, helpers, delay, n, simplify=simplify) for delay in delays]

for _ in range(n):
expression = 0
Expand Down Expand Up @@ -1391,7 +1392,7 @@ def z(index,time=t):

def tangent_vector_f():
jacs = [
_jac( f_basic, helpers, delay, self.n )
_jac( f_basic, helpers, delay, self.n, simplify=simplify )
for delay in delays
]

Expand Down
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