Updated the cx16 library to the Commander X16 Kernal's prerelease 35.

libsrc/cx16/clock.s

@@ -0,0 +1,36 @@
+;
+; 1998-09-21, Ullrich von Bassewitz
+; 2019-12-25, Greg King
+;
+; clock_t clock (void);
+;
+
+        .constructor    initclock
+        .export         _clock
+
+        .import         SETTIM, RDTIM
+        .importzp       sreg
+
+
+; clock() counts the amount of time that the process has run.
+; Therefore, reset it when the program begins.
+
+.proc   initclock
+
+        lda     #$00
+        tax
+        tay
+        jmp     SETTIM
+
+.endproc
+
+
+
+.proc   _clock
+
+        stz     sreg + 1        ; Byte 3 always is zero
+        jsr     RDTIM
+        sty     sreg
+        rts
+
+.endproc