# error "Must #define __STDC_LIMIT_MACROS before #including Support/DataTypes.h"
#endif
+#if !defined(__STDC_CONSTANT_MACROS)
+# error "Must #define __STDC_CONSTANT_MACROS before " \
+ "#including Support/DataTypes.h"
+#endif
+
// Note that <inttypes.h> includes <stdint.h>, if this is a C99 system.
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#define INT32_MAX 2147483647
#define INT32_MIN -2147483648
#define UINT32_MAX 4294967295U
-#if !defined(INT64_C)
-# define INT64_C(val) val##LL
-#endif
+#define INT8_C(C) C
+#define UINT8_C(C) C
+#define INT16_C(C) C
+#define UINT16_C(C) C
+#define INT32_C(C) C
+#define UINT32_C(C) C ## U
+#define INT64_C(C) ((int64_t) C ## LL)
+#define UINT64_C(C) ((uint64_t) C ## ULL)
#endif /* _MSC_VER */
/* Set defaults for constants which we cannot find. */