gguf-hash: portable xxhash result print method

Author: mofosyne

examples/gguf-hash/gguf-hash.cpp

@@ -131,7 +131,14 @@ static bool gguf_hash(const hash_params & hash_params) {
 
             // Per Layer Hash
             XXH64_hash_t hash = XXH64(raw_data, n_bytes, 0);
-            printf("xxhash  %016lx  %s:%s\n", hash, fname.c_str(), name);
+
+            char hex_result[17];
+            for (int  offset = 0; offset < 8; offset++) {
+                unsigned int shift_bits_by = (8 * (8 - offset - 1));
+                sprintf( ( hex_result + (2*offset)), "%02x", (unsigned char) (hash >> shift_bits_by)&0xff);
+            }
+
+            printf("xxhash  %s  %s:%s\n", hex_result, fname.c_str(), name);
 
             // Overall Model Hash
             if (XXH64_update(xxhash_model_hash_state, raw_data, n_bytes) == XXH_ERROR) abort();
@@ -157,7 +164,14 @@ static bool gguf_hash(const hash_params & hash_params) {
 
     if (hash_params.xxhash) {
         XXH64_hash_t const hash = XXH64_digest(xxhash_model_hash_state);
-        printf("xxhash  %016lx  %s\n", hash, fname.c_str());
+
+        char hex_result[17];
+        for (int  offset = 0; offset < 8; offset++) {
+            unsigned int shift_bits_by = (8 * (8 - offset - 1));
+            sprintf( ( hex_result + (2*offset)), "%02x", (unsigned char) (hash >> shift_bits_by)&0xff);
+        }
+
+        printf("xxhash  %s  %s\n", hex_result, fname.c_str());
     }
 
     if (hash_params.sha1) {