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    Subject[PATCH 6/8] perf stat: Avoid fractional digits for integer scales
    Date
    From: Andi Kleen <ak@linux.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@linux.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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