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extra: avoid possible divide-by-zero conditions test.

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This commit is contained in:
Graydon Hoare 2013-07-17 12:28:48 -07:00
parent 4bf6b84a4d
commit 6d78a367b1
1 changed files with 5 additions and 4 deletions
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9
src/libextra/test.rs
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@ -845,7 +845,7 @@ impl MetricMap {
if delta.abs() <= noise {
LikelyNoise
} else {
let pct = delta.abs() / vold.value * 100.0;
let pct = delta.abs() / (vold.value).max(&f64::epsilon) * 100.0;
if vold.noise < 0.0 {
// When 'noise' is negative, it means we want
// to see deltas that go up over time, and can
@ -954,7 +954,7 @@ impl BenchHarness {
if self.iterations == 0 {
0
} else {
self.ns_elapsed() / self.iterations
self.ns_elapsed() / self.iterations.max(&1)
}
}
@ -977,7 +977,7 @@ impl BenchHarness {
if self.ns_per_iter() == 0 {
n = 1_000_000;
} else {
n = 1_000_000 / self.ns_per_iter();
n = 1_000_000 / self.ns_per_iter().max(&1);
}
let mut total_run = 0;
@ -1047,7 +1047,8 @@ pub mod bench {
let ns_iter_summ = bs.auto_bench(f);
let iter_s = 1_000_000_000 / (ns_iter_summ.median as u64);
let ns_iter = (ns_iter_summ.median as u64).max(&1);
let iter_s = 1_000_000_000 / ns_iter;
let mb_s = (bs.bytes * iter_s) / 1_000_000;
BenchSamples {