add support for printing some extra large numbers to histograms

ok mpi

diff --git a/usr.sbin/btrace/map.c b/usr.sbin/btrace/map.c
index aff9b3a..c35d2a4 100644 (file)
--- a/usr.sbin/btrace/map.c
+++ b/usr.sbin/btrace/map.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: map.c,v 1.19 2021/11/15 14:57:57 claudio Exp $ */
+/*     $OpenBSD: map.c,v 1.20 2022/04/30 01:29:05 tedu Exp $ */
 
 /*
  * Copyright (c) 2020 Martin Pieuchot <mpi@openbsd.org>
@@ -267,11 +267,26 @@ hist_increment(struct hist *hist, const char *key, long step)
 long
 hist_get_bin_suffix(long bin, char **suffix)
 {
+#define EXA    (PETA * 1024)
+#define PETA   (TERA * 1024)
+#define TERA   (GIGA * 1024)
 #define GIGA   (MEGA * 1024)
 #define MEGA   (KILO * 1024)
-#define KILO   (1024)
+#define KILO   (1024LL)
 
        *suffix = "";
+       if (bin >= EXA) {
+               bin /= EXA;
+               *suffix = "E";
+       }
+       if (bin >= PETA) {
+               bin /= PETA;
+               *suffix = "P";
+       }
+       if (bin >= TERA) {
+               bin /= TERA;
+               *suffix = "T";
+       }
        if (bin >= GIGA) {
                bin /= GIGA;
                *suffix = "G";
@@ -284,10 +299,7 @@ hist_get_bin_suffix(long bin, char **suffix)
                bin /= KILO;
                *suffix = "K";
        }
-
        return bin;
-#undef MEGA
-#undef KILO
 }
 
 /*