Standard library improvements

include/string_fastpointers.mfk

@@ -0,0 +1,37 @@
+#pragma zilog_syntax
+
+byte strzlen(pointer str) {
+    pointer end
+    end = str
+    while end[0] != 0 {
+        end += 1
+    }
+    return lo(end - str)
+}
+
+sbyte strzcmp(pointer str1, pointer str2) {
+    while true {
+        if str1[0] == 0 {
+            if str2[0] == 0 {
+                return 0
+            } else {
+                return -1
+            }
+        } else if str1[0] != str2[0] {
+            if str1[0] < str2[0] { return -1 }
+            return 1
+        }
+        str1 += 1
+        str2 += 1
+    }
+}
+
+void strzcopy(pointer dest, pointer src) {
+    byte c
+    do {
+        c = src[0]
+        dest[0] = c
+        src += 1
+        dest += 1
+    } while c != 0
+}