fix return type error of rt_strcasecmp: rt_uint32_t to rt_int32_t

Signed-off-by: lihui <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/rtthread.h b/include/rtthread.h
index 92cdf012b2..70d4f38896 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -554,7 +554,7 @@ rt_int32_t rt_sscanf(const char *buf, const char *fmt, ...);
 char *rt_strncpy(char *dest, const char *src, rt_ubase_t n);
 void *rt_memmove(void *dest, const void *src, rt_ubase_t n);
 rt_int32_t rt_memcmp(const void *cs, const void *ct, rt_ubase_t count);
-rt_uint32_t rt_strcasecmp(const char *a, const char *b);
+rt_int32_t rt_strcasecmp(const char *a, const char *b);
 
 void rt_show_version(void);