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-rw-r--r--extras/mini-os/include/posix/strings.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/extras/mini-os/include/posix/strings.h b/extras/mini-os/include/posix/strings.h
index 8619ba2865..4957c41ff7 100644
--- a/extras/mini-os/include/posix/strings.h
+++ b/extras/mini-os/include/posix/strings.h
@@ -5,4 +5,8 @@
#define bzero(ptr, size) (memset((ptr), '\0', (size)), (void) 0)
+int ffs (int i);
+int ffsl (long int li);
+int ffsll (long long int lli);
+
#endif /* _POSIX_STRINGS_H */