Implemented some basic libc functions and a text console

2022-12-21 08:29:33 +00:00
parent f59d67435d
commit 8475a6139e
30 changed files with 1898 additions and 0 deletions
--- a/libc/string/strcmp.c
+++ b/libc/string/strcmp.c
@@ -0,0 +1,19 @@
+int strcmp(const char *s1, const char *s2)
+{
+    int i;
+    for (i = 0; s1[i] == s2[i]; i++)
+        if (s1[i] == '\0')
+            return 0;
+
+    return s1[i] - s2[i];
+}
+
+int strncmp(const char *s1, const char *s2, unsigned int n)
+{
+    for (; n > 0; s1++, s2++, --n)
+        if (*s1 != *s2)
+            return ((*(unsigned char *)s1 < *(unsigned char *)s2) ? -1 : 1);
+        else if (*s1 == '\0')
+            return 0;
+    return 0;
+}