some clang-tidy 21 fixes

.clang-tidy

@@ -11,6 +11,7 @@ Checks: >
        -cppcoreguidelines-init-variables,
        -cppcoreguidelines-macro-usage,
        -cppcoreguidelines-non-private-member-variables-in-classes,
+       -cppcoreguidelines-use-enum-class,
        -cppcoreguidelines-pro-*,
      misc-*,
        -misc-const-correctness,

integration/nse_update_sdc.H

@@ -26,7 +26,7 @@
 
 using namespace amrex::literals;
 
-#if defined(NSE_TABLE)
+#ifdef NSE_TABLE
 
 ///
 /// this acts as an explicit Euler step for the system (rho e, rho aux)
@@ -517,4 +517,4 @@ void sdc_nse_burn(BurnT& state, const amrex::Real dt) {
 }
 #endif
 
-#endif
+#endif

networks/general_null/network_header.template

@@ -9,7 +9,7 @@
 #ifndef NETWORK_PROPERTIES_H
 #define NETWORK_PROPERTIES_H
 
-#if defined(__GNUC__)
+#ifdef __GNUC__
 #define MICROPHYSICS_UNUSED [[gnu::unused]]
 #else
 #define MICROPHYSICS_UNUSED

neutrinos/sneut5.H

@@ -519,7 +519,7 @@ number_t nu_photo(const sneutf_t<number_t>& sf) {
 
     // equation 3.7
 
-    const auto [sin1, cos1] = admath::sincos(amrex::Real(nu_constants::fac1) * tau);
+    const auto [sin1, cos1] = admath::sincos(amrex::Real(nu_constants::fac1) * tau);  // NOLINT(misc-confusable-identifiers)
 
     const auto cos1_sq = eval(cos1 * cos1);
     const auto sin1_sq = eval(sin1 * sin1);