86 lines
1.7 KiB
Go
86 lines
1.7 KiB
Go
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package jrzq
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import (
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"fmt"
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"math"
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"strconv"
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)
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// DecodeIntervalMidpoint 将 xyp 区间码解码为区间中位整数。
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func DecodeIntervalMidpoint(field, code string) int {
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if code == "" || code == "0" {
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return 0
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}
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rules, ok := loanRiskIntervalMappings[field]
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if !ok {
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return 0
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}
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for _, rule := range rules {
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if rule.output != code {
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continue
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}
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min := rule.min
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max := rule.max
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if max >= math.MaxFloat64/4 {
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if rule.minInclusive {
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return int(math.Round(min + 1))
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}
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return int(math.Round(min + 2))
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}
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lo := min
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hi := max
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if !rule.minInclusive {
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lo += 0.5
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}
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if !rule.maxInclusive {
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hi -= 0.5
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}
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return int(math.Round((lo + hi) / 2))
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}
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return 0
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}
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// FormatLoanRiskInterval 将 xyp 区间码格式化为可读区间字符串。
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func FormatLoanRiskInterval(field, code string) string {
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if code == "" || code == "0" {
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return "0"
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}
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rules, ok := loanRiskIntervalMappings[field]
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if !ok {
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return "0"
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}
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for _, rule := range rules {
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if rule.output != code {
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continue
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}
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return formatIntervalBounds(rule.min, rule.max, rule.minInclusive, rule.maxInclusive)
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}
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return "0"
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}
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func formatIntervalBounds(min, max float64, minInclusive, maxInclusive bool) string {
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if max >= math.MaxFloat64/4 {
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left := "("
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if minInclusive {
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left = "["
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}
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return fmt.Sprintf("%s%s,+)", left, formatBound(min))
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}
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left := "("
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if minInclusive {
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left = "["
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}
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right := ")"
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if maxInclusive {
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right = "]"
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}
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return fmt.Sprintf("%s%s,%s%s", left, formatBound(min), formatBound(max), right)
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}
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func formatBound(v float64) string {
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if v == float64(int64(v)) {
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return strconv.FormatInt(int64(v), 10)
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}
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return strconv.FormatFloat(v, 'f', -1, 64)
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}
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