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Date: Fri, 13 May 2016 18:44:55 -0700 From: Andi Kleen <andi@...stfloor.org> To: acme@...nel.org Cc: peterz@...radead.org, jolsa@...nel.org, mingo@...nel.org, linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com> Subject: [PATCH 6/8] perf stat: Avoid fractional digits for integer scales From: Andi Kleen <ak@...ux.intel.com> When the scaling factor is a full integer don't display fractional digits. This avoids unnecessary .00 output for topdown metrics with scale factors. v2: Remove redundant check. Signed-off-by: Andi Kleen <ak@...ux.intel.com> --- tools/perf/builtin-stat.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 5645a8361de6..db84bfc0a478 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -66,6 +66,7 @@ #include <stdlib.h> #include <sys/prctl.h> #include <locale.h> +#include <math.h> #define DEFAULT_SEPARATOR " " #define CNTR_NOT_SUPPORTED "<not supported>" @@ -986,12 +987,12 @@ static void abs_printout(int id, int nr, struct perf_evsel *evsel, double avg) const char *fmt; if (csv_output) { - fmt = sc != 1.0 ? "%.2f%s" : "%.0f%s"; + fmt = floor(sc) != sc ? "%.2f%s" : "%.0f%s"; } else { if (big_num) - fmt = sc != 1.0 ? "%'18.2f%s" : "%'18.0f%s"; + fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s"; else - fmt = sc != 1.0 ? "%18.2f%s" : "%18.0f%s"; + fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s"; } aggr_printout(evsel, id, nr); -- 2.5.5
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