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浮点数

n.floating-point number
网络double; floating point; REAL

浮点数

浮点数

英-汉网络释义

浮点数

n.

1.floating-point number

1

Returns TRUE if val is infinite (positive or negative ), like the result of log (0 ) or any value too big to fit into a float on this platform .

如果 val 为无穷大（正的或负的），例如 log （0 ）的结果或者任何超出本平台的浮点数范围的值，则返回 TRUE 。

4

Stores an ordered pair of floating-point numbers, typically the width and height of a rectangle .

存储有序浮点数对，通常为矩形的宽度和高度。

6

Appends the string representation of a specified single-precision floating-point number to the end of this instance .

在此实例的结尾追加指定的单精度浮点数的字符串表示形式。

7

The non-ordered nature of NaN adds further opportunities for error when comparing floating point numbers.

NaN 的无序性质使得在比较浮点数时更容易发生错误。

8

Sure , the result would not necessarily be meaningful -- a string is neither objectively less than nor greater than a float .

当然，结果不一定是有意义的 ——比如字符串和浮点数的比较就没有意义。

9

Floating-point numbers for which the first bit of the mantissa is one are normalized .

尾数的第1 位为 1 的浮点数是正常的。

10

Representation of a number to its double- precision floating point number equivalent .

将数字的字符串表示形式转换为它的等效双精度浮点数。

11

Floats in Erlang are used to represent real numbers, and can be expressed naturally , as shown in Listing 7 .

在 Erlang 中，会使用浮点数代表实数，并且可以自然地表达浮点数，参见清单 7 。

12

Inserts the string representation of a double- precision floating -point number into this instance at the specified character position .

将双精度浮点数的字符串表示形式插入到此实例中的指定字符位置。

14

Converts the value of the specified double-precision floating point number to its equivalent String representation .

将指定的双精度浮点数的值转换为它的等效 String 表示形式。

15

When the range of data is great and requiring high precision , it is usually adopted floating-point numbers.

在处理的数据范围较大和要求精度较高时，浮点数运算被广泛地采用。

16

Stores a set of four floating-point numbers that represent the location and size of a rectangle .

存储一组浮点数，共四个，表示一个矩形的位置和大小。

17

Sets a double-precision floating point number to a specified value and returns the original value , as an atomic operation .

以原子操作的形式，将双精度浮点数设置为指定的值并返回原始值。

18

For floating-point numbers, you place a decimal as the separator between the whole part of the number and the fraction.

对于浮点数，您将在整数部分和小数部分之间放置小数点。

19

Should not be used if your code depends upon the expected behavior of truncating the fractional portion of the floating-point number .

如果代码取决于截断浮点数的小数部分的预期行为，则不应使用。

20

Regan speculated that this particular number is troublesome because it is the "largest subnormal double-precision floating-point number . "

Regan 推测这个特殊数字的麻烦之处在于它是 “最大的次法线双精度浮点数 ”。

21

Converts the specified string representation of a number to an equivalent double-precision floating-point number .

将指定之数字的字串表示，转换为相等的双精确度浮点数。

22

Converts the specified string representation of a number to an equivalent single-precision floating-point number .

将指定的十进制数的值转换为等效的单精度浮点数。

23

"Consumers don't need double precision , " he said .

“普通消费者不需要双精度（浮点数支持）”他说。

24

Writes the text representation of a double-precision floating-point number to the output stream, along with any pending tab spacing .

将双精度浮点数的文本表示形式连同任何挂起的制表符间距一起写入到输出流。

25

As you can see , floats are pretty accurate for small powers of two.

可以看到，对于比较小的 2 的幂次方，浮点数是非常精确的。

28

Calculates the integral part of a specified double-precision floating-point number .

计算指定双精度浮点数的整数部分。

29

This is, of course , not always possible, but you should be aware of the limitations of floating point comparison .

当然，这并不总是可能的，但您应该意识到要限制浮点数比较。

30

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