...

mcc/mcc_pcm.h

@@ -14,7 +14,12 @@
 namespace mcc
 {
 
-enum class MccDefaultPCMErrorCode : int { ERROR_OK, ERROR_INVALID_INPUTS_BISPLEV, ERROR_EXCEED_MAX_ITERS };
+enum class MccDefaultPCMErrorCode : int {
+    ERROR_OK,
+    ERROR_INVALID_INPUTS_BISPLEV,
+    ERROR_EXCEED_MAX_ITERS,
+    ERROR_NULLPTR
+};
 
 /*  error category definition  */
 
@@ -38,6 +43,8 @@ struct MccDefaultPCMCategory : public std::error_category {
                 return "invalid input arguments for bispev";
             case MccDefaultPCMErrorCode::ERROR_EXCEED_MAX_ITERS:
                 return "exceed maximum of iterations number";
+            case MccDefaultPCMErrorCode::ERROR_NULLPTR:
+                return "nullptr input argument";
             default:
                 return "UNKNOWN";
         }
@@ -183,10 +190,18 @@ public:
     error_t computePCM(mcc_celestial_point_c auto pt, mcc_PCM_c auto* res, T* app_pt = nullptr)
         requires(mcc_celestial_point_c<T> || mcc_eqt_hrz_coord_c<T> || std::same_as<T, std::nullptr_t>)
     {
+        if (res == nullptr) {
+            return MccDefaultPCMErrorCode::ERROR_NULLPTR;
+        }
+
         std::lock_guard lock(*_pcmDataMutex);
 
+        res->pcmX = 0.0;
+        res->pcmY = 0.0;
+
         if constexpr (mcc_is_equatorial_mount<MOUNT_TYPE>) {  // equatorial
-            if (_pcmData.type == MccDefaultPCMType::PCM_TYPE_GEOMETRY) {
+            if (_pcmData.type == MccDefaultPCMType::PCM_TYPE_GEOMETRY ||
+                _pcmData.type == MccDefaultPCMType::PCM_TYPE_GEOMETRY_BSPLINE) {
                 const auto cosPhi = std::cos(_pcmData.siteLatitude);
                 const auto sinPhi = std::sin(_pcmData.siteLatitude);
                 const auto tanY = std::tan(pt.Y);