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build3/poincare/src/determinant.cpp 1.22 KB
6663b6c9   adorian   projet complet av...
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  #include <poincare/determinant.h>
  #include <poincare/matrix.h>
  extern "C" {
  #include <assert.h>
  }
  #include <cmath>
  
  namespace Poincare {
  
  Expression::Type Determinant::type() const {
    return Type::Determinant;
  }
  
  Expression * Determinant::clone() const {
    Determinant * a = new Determinant(m_operands, true);
    return a;
  }
  
  Expression * Determinant::shallowReduce(Context& context, AngleUnit angleUnit) {
    Expression * e = Expression::shallowReduce(context, angleUnit);
    if (e != this) {
      return e;
    }
    Expression * op = editableOperand(0);
  #if MATRIX_EXACT_REDUCING
    if (!op->recursivelyMatches(Expression::IsMatrix)) {
      return replaceWith(op, true);
    }
    return this;
  #else
    return replaceWith(op, true);
  #endif
  }
  
  // TODO: handle this exactly in shallowReduce for small dimensions.
  template<typename T>
  Expression * Determinant::templatedApproximate(Context& context, AngleUnit angleUnit) const {
    Expression * input = operand(0)->approximate<T>(context, angleUnit);
    Expression * result = nullptr;
    if (input->type() == Type::Complex) {
      result = input->clone();
    } else {
      assert(input->type() == Type::Matrix);
      result = static_cast<Matrix *>(input)->createDeterminant<T>();
    }
    delete input;
    return result;
  }
  
  }