Fix compilation error for models with events and xdot=0 (#2111)

Fixes #2110
AMICI-dev · May 25, 2023 · fd1e22e · fd1e22e
1 parent 3b4e12d
commit fd1e22e
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/python/sdist/amici/de_export.py b/python/sdist/amici/de_export.py
@@ -1999,9 +1999,10 @@ def _compute_equation(self, name: str) -> None:
 
                 # need to check if equations are zero since we are using
                 # symbols
-                if not smart_is_zero_matrix(self.eq("stau")[ie]):
+                if not smart_is_zero_matrix(self.eq("stau")[ie]) \
+                        and not smart_is_zero_matrix(self.eq("xdot")):
                     tmp_eq += smart_multiply(
-                        (self.sym("xdot_old") - self.sym("xdot")),
+                        self.sym("xdot_old") - self.sym("xdot"),
                         self.sym("stau").T,
                     )