Rewrite guts of print_ping_time() in asm, banish C division and modulus operators. 7359 bytes free.

1 files changed, 4 insertions, 12 deletions

diff --git a/src/irc.c b/src/irc.c
index bfa1b90..d052937 100644
--- a/src/irc.c
+++ b/src/irc.c
@@ -119,8 +119,8 @@ static void do_priv_nick(void) {
    the compiled code smaller, but it grew by ~50 bytes. avoid.
  */
 static void print_ping_time(char *p) {
+	extern void print_jif_sec(unsigned int j);
 	static unsigned int now, pingtime;
-	static unsigned int sec, frac;
 
 	now = read_rtclok();
 	pingtime = (unsigned int)a2uint(p);
@@ -128,19 +128,10 @@ static void print_ping_time(char *p) {
 	/* correct for rtclock rollover (every ~9 mins) */
 	if(now < pingtime) now |= 0x8000;
 
-	pingtime = now - pingtime;
-
-	sec = pingtime / timers.hz;
-	frac = pingtime % timers.hz;
-	frac *= 100;
-	frac /= timers.hz;
-
 	scr_print_active("*** ");
 	scr_print_active(msg_src);
 	scr_print_active(" lag: ");
-	scr_act_printnum(sec);
-	scr_putc_active('.');
-	scr_act_printnum(frac);
+	print_jif_sec(now - pingtime);
 	scr_putc_active('s');
 }
 
@@ -791,7 +782,8 @@ static void hunt_screen(signed char dir) {
 		s += dir;
 		if(s < 0)
 			s = MAX_SCREENS - 1;
-		s %= MAX_SCREENS;
+		if(s == MAX_SCREENS)
+			s = 0;
 	} while(scr_status[s] == SCR_UNUSED);
 
 	scr_display(s);