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40 lines
745 B
Go
40 lines
745 B
Go
// +build go1.6
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package humanize
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import (
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"bytes"
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"math/big"
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"strings"
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)
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// BigCommaf produces a string form of the given big.Float in base 10
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// with commas after every three orders of magnitude.
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func BigCommaf(v *big.Float) string {
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buf := &bytes.Buffer{}
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if v.Sign() < 0 {
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buf.Write([]byte{'-'})
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v.Abs(v)
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}
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comma := []byte{','}
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parts := strings.Split(v.Text('f', -1), ".")
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pos := 0
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if len(parts[0])%3 != 0 {
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pos += len(parts[0]) % 3
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buf.WriteString(parts[0][:pos])
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buf.Write(comma)
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}
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for ; pos < len(parts[0]); pos += 3 {
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buf.WriteString(parts[0][pos : pos+3])
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buf.Write(comma)
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}
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buf.Truncate(buf.Len() - 1)
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if len(parts) > 1 {
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buf.Write([]byte{'.'})
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buf.WriteString(parts[1])
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}
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return buf.String()
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}
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