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Go 64-bit multiplication and division without overflow.
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| import "math/bits" | |
| func mulDiv(a, b, c int64) int64 { | |
| hi, lo := bits.Mul64(uint64(a), uint64(b)) | |
| quo, _ := bits.Div64(hi, lo, uint64(c)) | |
| return int64(quo) | |
| } |
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