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-rw-r--r--src/testing/benchmark.go20
1 files changed, 12 insertions, 8 deletions
diff --git a/src/testing/benchmark.go b/src/testing/benchmark.go
index 1b81ec3a2d..a8f75e9712 100644
--- a/src/testing/benchmark.go
+++ b/src/testing/benchmark.go
@@ -451,23 +451,27 @@ func (r BenchmarkResult) String() string {
func prettyPrint(w io.Writer, x float64, unit string) {
// Print all numbers with 10 places before the decimal point
- // and small numbers with three sig figs.
+ // and small numbers with four sig figs. Field widths are
+ // chosen to fit the whole part in 10 places while aligning
+ // the decimal point of all fractional formats.
var format string
switch y := math.Abs(x); {
- case y == 0 || y >= 99.95:
+ case y == 0 || y >= 999.95:
format = "%10.0f %s"
- case y >= 9.995:
+ case y >= 99.995:
format = "%12.1f %s"
- case y >= 0.9995:
+ case y >= 9.9995:
format = "%13.2f %s"
- case y >= 0.09995:
+ case y >= 0.99995:
format = "%14.3f %s"
- case y >= 0.009995:
+ case y >= 0.099995:
format = "%15.4f %s"
- case y >= 0.0009995:
+ case y >= 0.0099995:
format = "%16.5f %s"
- default:
+ case y >= 0.00099995:
format = "%17.6f %s"
+ default:
+ format = "%18.7f %s"
}
fmt.Fprintf(w, format, x, unit)
}