remove warning about implicit data type conversion

Author: schaubh

src/simulation/dynamics/gravityEffector/sphericalHarmonicsGravityModel.cpp

@@ -23,7 +23,7 @@
 
 namespace {
 // Computes the term (2 - d_l), where d_l is the kronecker delta.
-inline double getK(const unsigned int degree)
+inline double getK(const size_t degree)
 {
  return (degree == 0) ? 1.0 : 2.0;
 }
@@ -92,7 +92,7 @@ SphericalHarmonicsGravityModel::computeField(const Eigen::Vector3d& position_pla
 
 Eigen::Vector3d
 SphericalHarmonicsGravityModel::computeField(const Eigen::Vector3d& position_planetFixed,
- unsigned int degree, bool include_zero_degree) const
+ size_t degree, bool include_zero_degree) const
 {
  if (degree > this->maxDeg) {
  auto errorMsg =

src/simulation/dynamics/gravityEffector/sphericalHarmonicsGravityModel.h

@@ -69,7 +69,7 @@ class SphericalHarmonicsGravityModel : public GravityModel {
  * If include_zero_degree is false the degree that corresponds to the spherical
  * term (point-mass) of the gravity is ignored.
  */
- Eigen::Vector3d computeField(const Eigen::Vector3d& position_planetFixed, unsigned int degree,
+ Eigen::Vector3d computeField(const Eigen::Vector3d& position_planetFixed, size_t degree,
  bool include_zero_degree) const;
 
  /** Returns the gravitational potential energy at a position around this body.