arc_cosine.cpp
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#include <poincare/arc_cosine.h>
#include <poincare/trigonometry.h>
#include <poincare/simplification_engine.h>
extern "C" {
#include <assert.h>
}
#include <cmath>
namespace Poincare {
Expression::Type ArcCosine::type() const {
return Type::ArcCosine;
}
Expression * ArcCosine::clone() const {
ArcCosine * a = new ArcCosine(m_operands, true);
return a;
}
Expression * ArcCosine::shallowReduce(Context& context, AngleUnit angleUnit) {
Expression * e = Expression::shallowReduce(context, angleUnit);
if (e != this) {
return e;
}
#if MATRIX_EXACT_REDUCING
if (operand(0)->type() == Type::Matrix) {
return SimplificationEngine::map(this, context, angleUnit);
}
#endif
return Trigonometry::shallowReduceInverseFunction(this, context, angleUnit);
}
template<typename T>
Complex<T> ArcCosine::computeOnComplex(const Complex<T> c, AngleUnit angleUnit) {
assert(angleUnit != AngleUnit::Default);
if (c.b() != 0) {
return Complex<T>::Float(NAN);
}
T result = std::acos(c.a());
if (angleUnit == AngleUnit::Degree) {
return Complex<T>::Float(result*180/M_PI);
}
return Complex<T>::Float(result);
}
}