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-rw-r--r--include/linux/ctype.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/ctype.h b/include/linux/ctype.h
index 8acfe312f947..653589e3e30e 100644
--- a/include/linux/ctype.h
+++ b/include/linux/ctype.h
@@ -61,4 +61,10 @@ static inline char _tolower(const char c)
return c | 0x20;
}
+/* Fast check for octal digit */
+static inline int isodigit(const char c)
+{
+ return c >= '0' && c <= '7';
+}
+
#endif