signbit函数_signbit（）函数与Julia中的示例

青旅半醒 2023-03-05 12:46 30阅读 0赞

signbit函数

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

**signbit() function** is a library function in Julia programming language, it is used to check whether sign bit of number is ON or OFF, it returns true if the number is negative, otherwise, false.

**signbit()函数**是Julia编程语言中的库函数，用于检查number的符号位是ON还是OFF，如果number为负，则返回true ，否则返回false 。

**Syntax:**

**句法：**

signbit(val)

**Parameter(s):**

**参数：**

*  val – represents a signed integer/value, whose sign bit to be checked.
    
    val –表示一个有符号的整数/值，要检查其符号位。

**Return value:**

**返回值：**

The return type of this method is Bool, it returns true if the number is negative, otherwise, false.

此方法的返回类型为Bool ，如果数字为负，则返回true ，否则返回false 。

**Example:**

**例：**

Input:
        val = 0
        Output:
        signbit(val): false
    
        Input:
        val = -10
        Output:
        signbit(val): true
    
        Input:
        val = 10
        signbit(val): false

**Program:**

**程序：**

# signbit() Function with Example in Julia
    
    val = 0
    println("val: ", val)
    println("signbit(val): ", signbit(val))
    
    val = 10
    println("val: ", val)
    println("signbit(val): ", signbit(val))
    
    val = -10
    println("val: ", val)
    println("signbit(val): ", signbit(val))
    
    val = 10.23
    println("val: ", val)
    println("signbit(val): ", signbit(val))
    
    val = -10.23
    println("val: ", val)
    println("signbit(val): ", signbit(val))
    
    # printing the return type of signbit()
    println("typeof(signbit(-10)): ", typeof(signbit(-10)))

**Output**

**输出量**

val: 0
    signbit(val): false
    val: 10
    signbit(val): false
    val: -10
    signbit(val): true
    val: 10.23
    signbit(val): false
    val: -10.23
    signbit(val): true
    typeof(signbit(-10)): Bool

[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 | sign() Function][Julia _ sign_ Function] [Julia | copysign() Function ▶][Julia _ copysign_ Function]

[◀Julia|][Julia _ sign_ Function] [sign()函数][Julia _ sign_ Function] [茱莉亚|][Julia _ copysign_ Function] [copysign()函数▶][Julia _ copysign_ Function]

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

signbit函数

[Julia _ Sign and absolute value functions]: https://www.includehelp.com/julia/sign-and-absolute-value-functions.aspx
[Julia _ sign_ Function]: https://www.includehelp.com/julia/sign-function-with-example.aspx
[Julia _ copysign_ Function]: https://www.includehelp.com/julia/copysign-function-with-example.aspx
[https_www.includehelp.com_julia_signbit-function-with-example.aspx]: https://www.includehelp.com/julia/signbit-function-with-example.aspx