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package decimal
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import (
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"github.com/shopspring/decimal"
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)
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// Percent2PointMax9999 百分额，保留2位小数，如果分母为0 ，最大返回9999%
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func Percent2PointMax9999(numerator, denominator int64) string {
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zero, ok := DenZero(numerator, denominator, 9999)
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if ok {
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return zero.StringFixedBank(2)
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}
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val := Percent(numerator, denominator)
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fnum := val.InexactFloat64()
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if fnum > 0 && fnum < 0.01 {
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return "0.01"
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}
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return val.StringFixedBank(2)
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}
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// Chain1PointMax999 环比，保留1位小数据，如果分母为0 ，最大返回999%
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func Chain1PointMax999(numerator, denominator int64) (int32, string) {
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if numerator == 0 {
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return 0, "0"
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}
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zero, ok := DenZero(numerator, denominator, 999)
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if ok {
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return 1, zero.StringFixed(1)
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}
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var status int32
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val := Chain(numerator, denominator).Mul(decimal.NewFromFloat(100))
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fnum := val.InexactFloat64()
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if fnum < 0 {
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status = 2
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} else if fnum > 0 {
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status = 1
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}
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val = val.Abs()
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fnum = val.InexactFloat64()
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if fnum > 0 && fnum < 0.1 {
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return status, "0.1"
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}
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return status, val.StringFixed(1)
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}
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// Percent2PointMap 百分额hash表，保证计算合计100%
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func Percent2PointMap(children []*Operator, denominator int64) OperatorMap {
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om := make(OperatorMap, len(children))
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var oc []*Operator
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for _, child := range children {
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if child.Num == 0 || denominator == 0 {
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om[child.Id] = "0.00"
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} else {
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oc = append(oc, child)
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}
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}
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lid := len(oc)
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if lid > 1 {
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var zero = decimal.Zero
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var dec = make(map[int64]decimal.Decimal)
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var maxChild = decimal.Zero
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var maxIdx int64
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for _, child := range oc {
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val := Percent(child.Num, denominator)
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if val.InexactFloat64() < 0.01 {
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val = decimal.NewFromFloat(0.01)
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}
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// 只要小数后两位
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val = val.RoundBank(2)
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if val.GreaterThan(maxChild) {
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maxChild = val
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maxIdx = child.Id
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}
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dec[child.Id] = val
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zero = zero.Add(val)
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}
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var hundred = decimal.NewFromFloat(100)
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if zero.GreaterThan(hundred) {
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dec[maxIdx] = dec[maxIdx].Sub(zero.Sub(hundred))
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} else if zero.LessThan(hundred) {
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dec[maxIdx] = dec[maxIdx].Add(hundred.Sub(zero))
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}
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for id, v := range dec {
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om[id] = v.StringFixedBank(2)
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}
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} else if lid == 1 {
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om[oc[0].Id] = "100.00"
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}
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return om
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}
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