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[poincare] Trigonometry: missing clone

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Émilie Feral
2018-09-07 15:52:48 +02:00
parent bd5af83d96
commit e8c4e467ee
1 changed files with 1 additions and 1 deletions
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2
poincare/src/trigonometry.cpp
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@@ -30,7 +30,7 @@ float Trigonometry::characteristicXRange(const Expression & e, Context & context
assert(d == 1);
/* To compute a, the slope of the expression child(0), we compute the
* derivative of child(0) for any x value. */
Poincare::Derivative derivative(e.childAtIndex(0), Float<float>(1.0f));
Poincare::Derivative derivative(e.childAtIndex(0).clone(), Float<float>(1.0f));
float a = derivative.approximateToScalar<float>(context, angleUnit);
float pi = angleUnit == Preferences::AngleUnit::Radian ? M_PI : 180.0f;
return 2.0f*pi/std::fabs(a);