查询词典 Floating Life

The decimal module offers a Decimal datatype for decimal floating point arithmetic.

decimal 模块提供了一个 Decimal 数据类型用于浮点数计算。

Decimal Floating Point Arithmetic

11.8。十进制浮点运算

The integer part, the optional decimal point and the optional fraction part form the significant part of the floating literal.

整数部分，可选的小数点，以及可选的小数部分组成浮点文字量的有效部分。

We can use either common decimal notation or scientific notation to write floating-point literal constants.

通常可以用十进制或者科学计数法来表示浮点字面值常量。

Floating-point numbers are defined as any number that contains a decimal fraction and that can be expressed in decimal or scientific notation, as shown in Listing 1.5

浮点型数值像任何包含一个小数的数那样定义，并且能用十进制或是科学计数法表示。如Listing 1.5所示

Whether the number is printed using decimal or scientific notation depends on the value of the floating-point number being printed. The library chooses a format that enhances readability of the number. Very large and very small values are printed using scientific notation. Other values use fixed decimal.

使用小数形式还是科学记数法显示数值取决于被显示的浮点数的值，标准库选择增强数值可读性的格式，非常大和非常小的值使用科学记数法显示，其他值使用小数形式。

A floating literal consists of an integer part, a decimal point, a fraction part, an e or E, an optionally signed integer exponent, and an optional type suffix.

浮点文字量由整数部分，小数点，小数部分，e或 E，可选的有符号整数指数，以及可选的类型后缀组成。

By default, when the fractional part of a floating-point value is 0, the decimal point is not displayed.

默认情况下，当浮点值的小数部分为 0 的时候，不显示小数点。

Translates a double into a BigDecimal which is the exact decimal representation of the double's binary floating-point value.

上面的API简要描述相当的明确，而且通常情况下，上面的那一个使用起来要方便一些。我们可能想都不想就用上了，会有什么问题呢？

This paper deals with the decimal (floating-point) representation, and constructs the simplex crossover operation combining with simplex methods of the non-linear optimization.

传统遗传算法用二进制位串表示群体中的染色体，当应用于参数优化问题时，这种表示法在求解精度等方面有一定的限制。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。