位。Golang 中的 Sub()函数示例
原文:https://www . geesforgeks . org/bits-sub-function-in-golang-with-examples/
位。sub()Golang 中的函数用来求 a、b、借位的差，即 diff = a–b–借位。这里借位必须是 0 或 1；否则，行为是未定义的。要访问这个函数，需要在程序中导入数学/位包。在任何情况下，借贷输出的返回值总是 0 或 1。
语法:
func Sub(a, b, borrow uint) (diff, borrowOut uint)
参数:该函数取 uint 类型的三个参数，即 a、b、借用。借用参数的值为 1 或 0
返回值:该函数返回 uint 类型的两个值，即 diff 和 borrowOut。这里 diff 包含 a–b–借位的结果，借位不是 1 就是 0。
例 1:
// Golang program to illustrate bits.Sub() Function
package main
import (
"fmt"
"math/bits"
)
// Main function
func main() {
// Finding diff and borrowOu
// of the specified numbers
// Using Sub() function
nvalue_1, borrowOut := bits.Sub(4, 3, 0)
fmt.Println("Diff:", nvalue_1)
fmt.Println("BorrowOut :", borrowOut )
}
输出:
Diff: 1
BorrowOut : 0
例 2:
// Golang program to illustrate bits.Sub() Function
package main
import (
"fmt"
"math/bits"
)
// Main function
func main() {
// Finding diff and borrowOut
// of the specified numbers
// Using Sub() function
var a, b, borrow uint = 10, 5, 1
Diff, borrowOut := bits.Sub(a, b, borrow)
fmt.Println("Number 1:", a)
fmt.Println("Number 2:", b)
fmt.Println("Borrow :", borrow)
fmt.Println("Diff:", Diff)
fmt.Println("BorrowOut :", borrowOut)
}
输出:
Number 1: 10
Number 2: 5
Borrow : 1
Diff: 4
BorrowOut : 0
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