1 files changed, 55 insertions, 0 deletions
diff --git a/purgatory/string.c b/purgatory/string.c
new file mode 100644
index 0000000..f06c460
--- /dev/null
+++ b/purgatory/string.c
@@ -0,0 +1,55 @@
+#include <stddef.h>
+#include <string.h>
+
+size_t strnlen(const char *s, size_t max)
+{
+	size_t len = 0;
+	while(len < max && *s) {
+		len++;
+		s++;
+	}
+	return len;
+}
+
+void* memset(void* s, int c, size_t n)
+{
+	size_t i;
+	char *ss = (char*)s;
+
+	for (i=0;i<n;i++) ss[i] = c;
+	return s;
+}
+
+
+void* memcpy(void *dest, const void *src, size_t len)
+{
+	size_t i;
+	unsigned char *d;
+	const unsigned char *s;
+	d = dest;
+	s = src;
+
+	for (i=0; i < len; i++) 
+		d[i] = s[i];
+
+	return dest;
+}
+
+
+int memcmp(void *src1, void *src2, size_t len)
+{
+	unsigned char *s1, *s2;
+	size_t i;
+	s1 = src1;
+	s2 = src2;
+	for(i = 0; i < len; i++) {
+		if (*s1 != *s2) {
+			return *s2 - *s1;
+		}
+		s1++;
+		s2++;
+	}
+	return 0;
+	
+}
+