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build1/epsilon-master/poincare/src/division.cpp 2.71 KB
6663b6c9   adorian   projet complet av...
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  extern "C" {
  #include <assert.h>
  #include <string.h>
  #include <float.h>
  }
  
  #include <poincare/division.h>
  #include <poincare/power.h>
  #include <poincare/rational.h>
  #include <poincare/tangent.h>
  #include <poincare/multiplication.h>
  #include <poincare/opposite.h>
  #include "layout/fraction_layout.h"
  #include <cmath>
  
  namespace Poincare {
  
  Expression::Type Division::type() const {
    return Type::Division;
  }
  
  Expression * Division::clone() const {
    return new Division(m_operands, true);
  }
  
  int Division::polynomialDegree(char symbolName) const {
    if (operand(1)->polynomialDegree(symbolName) != 0) {
      return -1;
    }
    return operand(0)->polynomialDegree(symbolName);
  }
  
  bool Division::needParenthesisWithParent(const Expression * e) const {
    Type types[] = {Type::Division, Type::Power, Type::Factorial};
    return e->isOfType(types, 3);
  }
  
  Expression * Division::shallowReduce(Context& context, AngleUnit angleUnit) {
    Expression * e = Expression::shallowReduce(context, angleUnit);
    if (e != this) {
      return e;
    }
    Power * p = new Power(operand(1), new Rational(-1), false);
    Multiplication * m = new Multiplication(operand(0), p, false);
    detachOperands();
    p->shallowReduce(context, angleUnit);
    replaceWith(m, true);
    return m->shallowReduce(context, angleUnit);
  }
  
  template<typename T>
  std::complex<T> Division::compute(const std::complex<T> c, const std::complex<T> d) {
    return c/d;
  }
  
  ExpressionLayout * Division::createLayout(PrintFloat::Mode floatDisplayMode, int numberOfSignificantDigits) const {
    const Expression * numerator = operand(0)->type() == Type::Parenthesis ? operand(0)->operand(0) : operand(0);
    const Expression * denominator = operand(1)->type() == Type::Parenthesis ? operand(1)->operand(0) : operand(1);
    return new FractionLayout(numerator->createLayout(floatDisplayMode, numberOfSignificantDigits), denominator->createLayout(floatDisplayMode, numberOfSignificantDigits), false);
  }
  
  template<typename T> MatrixComplex<T> Division::computeOnComplexAndMatrix(const std::complex<T> c, const MatrixComplex<T> n) {
    MatrixComplex<T> * inverse = n.createInverse();
    if (inverse == nullptr) {
      return MatrixComplex<T>::Undefined();
    }
    MatrixComplex<T> result = Multiplication::computeOnComplexAndMatrix<T>(c, *inverse);
    delete inverse;
    return result;
  }
  
  template<typename T> MatrixComplex<T> Division::computeOnMatrices(const MatrixComplex<T> m, const MatrixComplex<T> n) {
    if (m.numberOfColumns() != n.numberOfColumns()) {
      return MatrixComplex<T>::Undefined();
    }
    MatrixComplex<T> * inverse = n.createInverse();
    if (inverse == nullptr) {
      return MatrixComplex<T>::Undefined();
    }
    MatrixComplex<T> result = Multiplication::computeOnMatrices<T>(m, *inverse);
    delete inverse;
    return result;
  }
  
  }