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cxx/mount_astrom.h

@@ -0,0 +1,37 @@
+#pragma once
+
+/*********************************
+ *    MOUNT CONTROL COMPONENTS    *
+ *                                *
+ *      astrometry functions      *
+ *********************************/
+
+#include <chrono>
+#include <concepts>
+#include <xsimd/xsimd.hpp>
+
+
+namespace mcc::traits
+{
+
+template <typename T>
+concept mcc_scalar_or_simd_c = xsimd::is_batch<T>::value || std::is_arithmetic_v<T>;
+
+}  // namespace mcc::traits
+
+
+namespace mcc::astro
+{
+
+// modified Julian date
+template <traits::mcc_scalar_or_simd_c T>
+int mcc_julday(const std::chrono::utc_clock::time_point& greg_time, T& mjd)
+{
+}
+
+template <traits::mcc_scalar_or_simd_c T, typename CT, typename DT>
+T mcc_time_to_alt_limit(const T& alt_limit, const T& RA, const T& DEC, const std::chrono::time_point<CT, DT>& now)
+{
+}
+
+}  // namespace mcc::astro