X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fnnue%2Fnnue_common.h;h=d41e02377ac34b35378a969034682a9b3029190b;hp=8c54f9baeebb46eeac67138f3d56665612054124;hb=58054fd0fa6294510fc8cf76b0ba9673d5094c10;hpb=d777ea79fff0f651bd948c881946cd06bebd9381

diff --git a/src/nnue/nnue_common.h b/src/nnue/nnue_common.h
index 8c54f9ba..d41e0237 100644
--- a/src/nnue/nnue_common.h
+++ b/src/nnue/nnue_common.h
@@ -99,6 +99,24 @@ namespace Stockfish::Eval::NNUE {
       return result;
   }
 
+  template <typename IntType>
+  inline void write_little_endian(std::ostream& stream, IntType value) {
+
+      std::uint8_t u[sizeof(IntType)];
+      typename std::make_unsigned<IntType>::type v = value;
+
+      std::size_t i = 0;
+      // if constexpr to silence the warning about shift by 8
+      if constexpr (sizeof(IntType) > 1) {
+        for (; i + 1 < sizeof(IntType); ++i) {
+            u[i] = v;
+            v >>= 8;
+        }
+      }
+      u[i] = v;
+
+      stream.write(reinterpret_cast<char*>(u), sizeof(IntType));
+  }
 }  // namespace Stockfish::Eval::NNUE
 
 #endif // #ifndef NNUE_COMMON_H_INCLUDED