64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
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// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package nums
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import (
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"fmt"
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"strconv"
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"strings"
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)
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func CountPlaces(v float64) int {
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s := strconv.FormatFloat(v, 'f', -1, 64)
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i := strings.IndexByte(s, '.')
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if i > -1 {
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return len(s) - i - 1
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}
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return 0
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}
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func FormatPlaces(v float64, p int) float64 {
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switch p {
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case 0:
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return float64(int(v))
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case 1:
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f := fmt.Sprintf("%.1f", v)
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o, _ := strconv.ParseFloat(f, 64)
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return o
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case 2:
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f := fmt.Sprintf("%.2f", v)
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o, _ := strconv.ParseFloat(f, 64)
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return o
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case 3:
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f := fmt.Sprintf("%.3f", v)
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o, _ := strconv.ParseFloat(f, 64)
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return o
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case 4:
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f := fmt.Sprintf("%.4f", v)
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o, _ := strconv.ParseFloat(f, 64)
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return o
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default:
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f := fmt.Sprintf("%.5f", v)
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o, _ := strconv.ParseFloat(f, 64)
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return o
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}
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}
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