目录
索引 🔎︎

# CLng 函数

将任意字符串或数字表达式转换为长整数。

### 语法:

    CLng (Expression As Variant) As Long

### 返回值:

Long

### 参数:

Expression: Any string or numeric expression that you want to convert. To convert a string expression, the number must be entered using a dot "." as the decimal point and a comma "," as the thousands separator (for instance 123,456.78), which may differ from your LibreOffice language settings.

If Expression lies outside the valid long integer range between -2.147.483.648 and 2.147.483.647, LibreOffice Basic returns an overflow error.

此函数将数字的小数部分取整为最接近的整数。

### 错误代码:

5 无效的过程调用

### 示例:

Numeric expressions are displayed according LibreOffice language settings:

    Sub ExampleCountryConvert
        MsgBox CDbl(1234.5678) ' 1234.5678
        MsgBox CInt(1234.5678) ' 1235
        MsgBox CLng(1234+5678) ' 6912
        MsgBox CSng(1234.5678) ' 1234.567749023

        MsgBox CDbl(expression := 5678.1234) ' 5678.1234
        MsgBox CInt(expression := 5678.1234) ' 5678
        MsgBox CLng(expression := 5678+1234) ' 6912
        MsgBox CSng(expression := 5678.1234) ' 5678.123535156
    End Sub