Define magic numbers as integer constants (#1518)

The underlying representation of multibyte character literals is
implementation-defined. This could, at least in principle, cause
cross-build data export/import issues independent of endianness.

Define magic numbers as integer literals to be on the safe side.

Signed-off-by: Juuso Alasuutari <[email protected]>

Author: imaami

llama.h

@@ -20,9 +20,9 @@
 #endif
 
 #define LLAMA_FILE_VERSION           2
-#define LLAMA_FILE_MAGIC             'ggjt'
-#define LLAMA_FILE_MAGIC_UNVERSIONED 'ggml'
-#define LLAMA_SESSION_MAGIC          'ggsn'
+#define LLAMA_FILE_MAGIC             0x67676a74u // 'ggjt'
+#define LLAMA_FILE_MAGIC_UNVERSIONED 0x67676d6cu // 'ggml'
+#define LLAMA_SESSION_MAGIC          0x6767736eu // 'ggsn'
 #define LLAMA_SESSION_VERSION        1
 
 #ifdef __cplusplus