[src/trunk]: src/tests/lib/libc/gen uint64_t -> uint32_t. 32bit is sufficien...

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/fc500dbbea0d
branches:  trunk
changeset: 336136:fc500dbbea0d
user:      isaki <isaki%NetBSD.org@localhost>
date:      Sat Feb 14 08:46:02 2015 +0000

description:
uint64_t -> uint32_t.  32bit is sufficient in this case
and it improved the performance approx 7% on my 68030.
see also PR lib/49664.

diffstat:

 tests/lib/libc/gen/t_randomid.c |  20 ++++++++++----------
 1 files changed, 10 insertions(+), 10 deletions(-)

diffs (56 lines):

diff -r 278a963720dc -r fc500dbbea0d tests/lib/libc/gen/t_randomid.c
--- a/tests/lib/libc/gen/t_randomid.c   Sat Feb 14 08:07:39 2015 +0000
+++ b/tests/lib/libc/gen/t_randomid.c   Sat Feb 14 08:46:02 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_randomid.c,v 1.3 2011/07/07 09:49:59 jruoho Exp $ */
+/* $NetBSD: t_randomid.c,v 1.4 2015/02/14 08:46:02 isaki Exp $ */
 
 /*-
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -38,7 +38,7 @@
 
 #define        PERIOD          30000
 
-uint64_t last[65536];
+uint32_t last[65536];
 
 ATF_TC(randomid_basic);
 ATF_TC_HEAD(randomid_basic, tc)
@@ -50,13 +50,13 @@
 ATF_TC_BODY(randomid_basic, tc)
 {
        static randomid_t ctx = NULL;
-       uint64_t lowest, n, diff;
+       uint32_t lowest, n, diff;
        uint16_t id;
 
        memset(last, 0, sizeof(last));
        ctx = randomid_new(16, (long)3600);
 
-       lowest = UINT64_MAX;
+       lowest = UINT32_MAX;
 
        for (n = 0; n < 1000000; n++) {
                id = randomid(ctx);
@@ -65,15 +65,15 @@
                        diff = n - last[id];
 
                        if (diff <= lowest) {
-                               if (lowest != UINT64_MAX)
-                                       printf("id %5d: last call at %9"PRIu64
-                                           ", current call %9"PRIu64
-                                           " (diff %5"PRIu64"), "
-                                           "lowest %"PRIu64"\n",
+                               if (lowest != UINT32_MAX)
+                                       printf("id %5d: last call at %9"PRIu32
+                                           ", current call %9"PRIu32
+                                           " (diff %5"PRIu32"), "
+                                           "lowest %"PRIu32"\n",
                                            id, last[id], n, diff, lowest);
 
                                ATF_REQUIRE_MSG(diff >= PERIOD,
-                                   "diff (%"PRIu64") less than minimum "
+                                   "diff (%"PRIu32") less than minimum "
                                    "period (%d)", diff, PERIOD);
 
                                lowest = diff;