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Merge pull request #17 from cockroachdb/nvanbenschoten/int_overflow

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Prevent unnecessary int64 overflow in NewFromFloat
This commit is contained in:
Vadim Graboys 2016-01-13 15:47:47 -05:00
commit 873b9ea5ed
2 changed files with 2 additions and 1 deletions
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2
decimal.go
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@ -140,7 +140,7 @@ func NewFromFloat(value float64) Decimal {
floor := math.Floor(value) floor := math.Floor(value)
// fast path, where float is an int // fast path, where float is an int
if floor == value && !math.IsInf(value, 0) { if floor == value && value <= math.MaxInt64 && value >= math.MinInt64 {
return New(int64(value), 0) return New(int64(value), 0)
} }

1
decimal_test.go
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@ -31,6 +31,7 @@ var testTable = map[float64]string{
.1000000000000003: "0.1000000000000003", .1000000000000003: "0.1000000000000003",
.1000000000000005: "0.1000000000000005", .1000000000000005: "0.1000000000000005",
.1000000000000008: "0.1000000000000008", .1000000000000008: "0.1000000000000008",
1e25: "10000000000000000000000000",
} }
var testTableScientificNotation = map[string]string{ var testTableScientificNotation = map[string]string{