This is not a benchmark of the untyped constant expression evaluation.
The expression in the loop is performed once and thrown away *at
compile time*. The benchmark here is really:
func BenchmarkUntypedConstants(b *testing.B) {
b.Log(0.3 - 0.1*3)
for i := 0; i < b.N; i++ {
}
}
On Sun, 2018-09-02 at 16:53 -0700, José Colón wrote:
> Maybe this comparison is completely wrong or unfair, but calculations
> with
> Go untyped constants is much faster than
> the github.com/ericlagergren/decimal package. In the end, they both
> produce
> the same correct answer: 0 .
>
> func BenchmarkUntypedConstants(b *testing.B) {
> b.Log(0.3 - 0.1*3)
> for i := 0; i < b.N; i++ {
> _ = 0.3 - 0.1*3
> }
> }
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