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-rw-r--r--lib/libc/string/strncmp.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/libc/string/strncmp.c b/lib/libc/string/strncmp.c
new file mode 100644
index 00000000..2fbc2395
--- /dev/null
+++ b/lib/libc/string/strncmp.c
@@ -0,0 +1,16 @@
+#include <stddef.h>
+
+int strncmp(const char *s1, const char *s2, size_t n)
+{
+ const unsigned char *p1 = (const unsigned char *)s1;
+ const unsigned char *p2 = (const unsigned char *)s2;
+
+ while (n-- > 0) {
+ if (*p1 != *p2 || *p1 == '\0')
+ return *p1 - *p2;
+ p1++;
+ p2++;
+ }
+
+ return 0;
+}