typedef unsigned long long u64;
#endif /* CLIB_AVOID_CLASH_WITH_LINUX_TYPES */
-#elif defined(alpha) || (defined(_mips) && __mips == 64) || defined(__x86_64__) || defined (__powerpc64__) || defined (__aarch64__)
+#elif defined(alpha) || (defined(_mips) && __mips == 64) || \
+ defined(__x86_64__) || defined(__powerpc64__) || defined(__aarch64__) || \
+ (defined(__riscv) && __riscv_xlen == 64)
typedef signed int i32;
typedef signed long i64;