some clang-tidy 19 fixes (AMReX-Astro#1664)

Author: zingale

.clang-tidy

@@ -19,6 +19,7 @@ Checks: >
        -misc-include-cleaner,
        -misc-non-private-member-variables-in-classes,
        -misc-use-anonymous-namespace,
+       -misc-use-internal-linkage,
      modernize-*,
        -modernize-avoid-c-arrays,
        -modernize-use-trailing-return-type,
@@ -29,12 +30,14 @@ Checks: >
        -readability-avoid-const-params-in-decls,
        -readability-braces-around-statements,
        -readability-else-after-return,
+       -readability-enum-initial-value,
        -readability-function-cognitive-complexity,
        -readability-function-size,
        -readability-identifier-length,
        -readability-implicit-bool-conversion,
        -readability-isolate-declaration,
        -readability-magic-numbers,
+       -readability-math-missing-parentheses,
        -readability-named-parameter,
        -readability-simplify-boolean-expr,
      mpi-*,

integration/VODE/vode_dvhin.H

@@ -122,17 +122,13 @@ void dvhin (BurnT& state, DvodeT& vstate, amrex::Real& H0, int& NITER, int& IER)
 
         }
 
-        // Iteration done. Apply bounds, bias factor, and sign. Then exit.
+        // Iteration done. Apply bounds and bias factor. Then exit.
         H0 = hnew * 0.5_rt;
-        if (H0 < HLB) {
-            H0 = HLB;
-        }
-        if (H0 > HUB) {
-            H0 = HUB;
-        }
+        H0 = std::clamp(H0, HLB, HUB);
 
     }
 
+    // apply sign
     H0 = std::copysign(H0, vstate.tout - vstate.t);
     NITER = iter;
     IER = 0;

networks/aprox13/actual_network.H

@@ -134,7 +134,7 @@ namespace NSE_INDEX
 #endif
 
 namespace Rates {
-    enum NetworkRates {
+    enum NetworkRates: std::uint8_t {
         He4_He4_He4_to_C12 = 1,
         C12_He4_to_O16,
         C12_C12_to_Ne20_He4,

networks/aprox21/actual_network.H

@@ -152,7 +152,7 @@ namespace NSE_INDEX
 #endif
 
 namespace Rates {
-    enum NetworkRates {
+    enum NetworkRates : std::uint8_t {
         H1_H1_to_He3 = 1,
         H1_H1_H1_to_He3,
         P_to_N,

networks/iso7/actual_network.H

@@ -114,7 +114,7 @@ namespace NSE_INDEX
 #endif
 
 namespace Rates {
-    enum NetworkRates {
+    enum NetworkRates : std::uint8_t {
         C12_He4_to_O16 = 1,
         He4_He4_He4_to_C12,
         C12_C12_to_Ne20_He4,

networks/rprox/actual_network.H

@@ -112,7 +112,7 @@ namespace network
 
 namespace Rates
 {
-    enum NetworkRates
+    enum NetworkRates : std::uint8_t
     {
         He4_He4_He4_to_C12 = 1,
         C12_H1_to_N13,