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microbench: avoid %03d in the format string

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This commit is contained in:
Zihao Yu 2021-01-28 16:00:36 +08:00
parent 1a008865df
commit a3d742d259
1 changed files with 17 additions and 4 deletions
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21
benchmarks/microbench/src/bench.c
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@ -10,6 +10,20 @@ static char *hbrk;
static uint64_t uptime() { return io_read(AM_TIMER_UPTIME).us; }
static char *format_time(uint64_t us) {
static char buf[32];
uint32_t ms = us / 1000;
us -= ms * 1000;
assert(us < 1000);
int len = sprintf(buf, "%d.000", ms);
char *p = &buf[len - 1];
while (us > 0) {
*(p --) = '0' + us % 10;
us /= 10;
}
return buf;
}
// The benchmark list
#define ENTRY(_name, _sname, _s, _m, _l, _h, _desc) \
@ -115,8 +129,7 @@ int main(const char *args) {
printf("\n");
if (setting_id != 0) {
printf(" min time: %d.%03d ms [%d]\n",
(int)(usec / 1000), (int)usec % 1000, (unsigned int)cur);
printf(" min time: %s ms [%d]\n", format_time(usec), cur);
}
bench_score += cur;
@ -134,8 +147,8 @@ int main(const char *args) {
} else {
printf("\n");
}
printf("Scored time: %d.%03d ms\n", (int)((score_time) / 1000), (int)score_time % 1000);
printf("Total time: %d.%03d ms\n", (int)((total_time) / 1000), (int)total_time % 1000);
printf("Scored time: %s ms\n", format_time(score_time));
printf("Total time: %s ms\n", format_time(total_time));
return 0;
}