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-rw-r--r--sys/include/ape/u.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/include/ape/u.h b/sys/include/ape/u.h
index 310379c08..2cc85822c 100644
--- a/sys/include/ape/u.h
+++ b/sys/include/ape/u.h
@@ -20,5 +20,9 @@ typedef uchar u8int;
typedef ushort u16int;
typedef ulong u32int;
typedef uvlong u64int;
+typedef signed char s8int;
+typedef signed short s16int;
+typedef signed int s32int;
+typedef signed long long s64int;
#endif