科学计数法转换浮点数【golang】

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说明

科学计数法转换为小数点

代码

工具类

func ScientificNotationTransform(numStr string) string {
	decimalNum, err := decimal.NewFromString(numStr)
	decimalNum = decimalNum.Abs()
	if err != nil {
		logrus.Errorf("decimal.NewFromString error, numStr:%s, err:%v", numStr, err)
		return numStr
	}
	return decimalNum.String()
}

测试

func TestScientificNotationTransform(t *testing.T) {
	var str = "7.814E-7"
	s := ScientificNotationTransform(str)
	assert.Equal(t, s, "0.0000007814")

	str = "-12E-7"
	rs := ScientificNotationTransform(str)
	assert.Equal(t, rs, "0.0000012")
}

原地址： https://blog.csdn.net/qq_40374604/category_11938137.html

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