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-rw-r--r--builtin/string.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/builtin/string.h b/builtin/string.h
index 50a6d54664..21159a5eef 100644
--- a/builtin/string.h
+++ b/builtin/string.h
@@ -14,5 +14,10 @@ int memcmp(const void *s1, const void *s2, size_t len);
void *memcpy(void *dest, const void *src, size_t len);
void *memmove(void *dest, const void *src, size_t n);
void *memset(void *dest, int c, size_t len);
+void *memchr(const void *buffer, int c, size_t n);
+
+size_t strnlen(const char *s, size_t maxlen);
+char *strncpy(char *dest, const char *src, size_t n);
+int strncmp(const char *s1, const char *s2, size_t n);
#endif /* __CROS_EC_STRINGS_H__ */