copysign_在Julia中使用example的copysign（）函数

我不是女神ヾ 2023-03-05 12:50 34阅读 0赞

copysign

## Julia| copysign()函数 **(**Julia | copysign() function**)** ##

**copysign() function** is a library function in Julia programming language, it accepts two values as parameters and returns a value with the magnitude of first value and sign of the second value.

**copysign()函数**是Julia编程语言中的库函数，它接受两个值作为参数，并返回一个值，该值具有第一个值的大小和第二个值的符号。

**Syntax:**

**句法：**

copysign(val1, val2)

**Parameter(s):**

**参数：**

*  val1 – represents the magnitude value i.e. first value that will be used as a magnitude to construct the return value.
    
    val1 –表示幅度值，即第一个值，它将用作构建返回值的幅度。
 *  val2 – represents the sign value i.e. second value whose sign will be used as a sign to construct the return value.
    
    val2 –表示符号值，即第二个值，其符号将用作构造返回值的符号。

**Return value:**

**返回值：**

The return type of this method is Int64, it returns a value with the magnitude of val1 and sign of val2.

此方法的返回类型为Int64 ，它返回一个值为val1且符号为val2的值 。

**Example:**

**例：**

Input:
        val1 = 0
        val2 = 0
        Output:
        copysign(val1, val2): 0
    
        Input:
        val1 = -123
        val2 = 10
        Output:
        copysign(val1, val2): 123
    
    
        Input:
        val1 = 123
        val2 = -1
        Output:
        copysign(val1, val2): -123

**Program:**

**程序：**

# copysign() Function with Example in Julia
    
    val1 = 0
    val2 = 0
    println("val1: ", val1)
    println("val2: ", val2)
    println("copysign(val1, val2): ", copysign(val1, val2))
    
    val1 = -10
    val2 = 0
    println("val1: ", val1)
    println("val2: ", val2)
    println("copysign(val1, val2): ", copysign(val1, val2))
    
    val1 = 10
    val2 = -10
    println("val1: ", val1)
    println("val2: ", val2)
    println("copysign(val1, val2): ", copysign(val1, val2))
    
    val1 = -10.20
    val2 = 1
    println("val1: ", val1)
    println("val2: ", val2)
    println("copysign(val1, val2): ", copysign(val1, val2))
    
    val1 = -10.23
    val2 = -10
    println("val1: ", val1)
    println("val2: ", val2)
    println("copysign(val1, val2): ", copysign(val1, val2))
    
    # printing the return type of copysign()
    println("typeof(copysign(123, -10)): ", typeof(copysign(123, -10)))

**Output**

**输出量**

val1: 0
    val2: 0
    copysign(val1, val2): 0
    val1: -10
    val2: 0
    copysign(val1, val2): 10
    val1: 10
    val2: -10
    copysign(val1, val2): -10
    val1: -10.2
    val2: 1
    copysign(val1, val2): 10.2
    val1: -10.23
    val2: -10
    copysign(val1, val2): -10.23
    typeof(copysign(123, -10)): Int64

[Julia | Sign and absolute value functions][Julia _ Sign and absolute value functions]

[Julia|][Julia _ Sign and absolute value functions] [符号和绝对值函数][Julia _ Sign and absolute value functions]

[◀ Julia | signbit() Function][Julia _ signbit_ Function] [Julia | flipsign() Function ▶][Julia _ flipsign_ Function]

[◀Julia|][Julia _ signbit_ Function] [signbit()函数][Julia _ signbit_ Function] [茱莉亚|][Julia _ flipsign_ Function] [flipsign()函数▶][Julia _ flipsign_ Function]

> 翻译自: [https://www.includehelp.com/julia/copysign-function-with-example.aspx][https_www.includehelp.com_julia_copysign-function-with-example.aspx]

copysign

[Julia _ Sign and absolute value functions]: https://www.includehelp.com/julia/sign-and-absolute-value-functions.aspx
[Julia _ signbit_ Function]: https://www.includehelp.com/julia/signbit-function-with-example.aspx
[Julia _ flipsign_ Function]: https://www.includehelp.com/julia/flipsign-function-with-example.aspx
[https_www.includehelp.com_julia_copysign-function-with-example.aspx]: https://www.includehelp.com/julia/copysign-function-with-example.aspx