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Method NewFromString and NewFromFloat works differently #289

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DarkDrim opened this issue Jun 29, 2022 · 1 comment

DarkDrim commented Jun 29, 2022 •

edited

Example:

a, _ := decimal.NewFromString("166.6666666666666667")
b := decimal.NewFromFloat(166.6666666666666667)
fmt.Println(a.Equal(b)) // false

println(a.String()) // 166.6666666666666667
println(b.String()) // 166.66666666666666

Play with it:
https://go.dev/play/p/isV9ODqEy5u

The same for:

decimal.NewFromFloatWithExponent(166.6666666666666667, -16)

Question is: why NewFromString and NewFromFloat returns different values?

The text was updated successfully, but these errors were encountered:

baryluk commented Jul 19, 2022

Because 166.6666666666666667 == 166.66666666666666 for float64.

This is a correct behavior.

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