package main import ( "fmt" "math" ) func roundToTwoDecimals(num float64) float64 { return math.Round(num*100) / 100 } func main() { num := 123.456789 roundedNum := roundToTwoDecimals(num) fmt.Println(roundedNum) // 输出: 123.46 } 4. 注意事项 当使用fmt.Sprintf或strconv.Format...
除了使用math.Round函数外,我们还可以使用fmt.Sprintf函数和格式化字符串来实现浮点数的舍入操作。 import"fmt"funcroundToDecimal(numfloat64,decimalsint)float64{format:=fmt.Sprintf("%%.%df",decimals)roundedString:=fmt.Sprintf(format,num)rounded,_:=strconv.ParseFloat(roundedString,64)returnrounded} ...
fmt.Println(math.Abs(-19))//获取绝对值:19fmt.Println(math.Floor(3.14))//向下取整fmt.Println(math.Ceil(3.14))//向上取整fmt.Println(math.Round(3.1678))//自动(四舍五入)取整数fmt.Println(math.Round(3.1678*100)/100)//自动保留小数点后2位fmt.Println(math.Mod(11,3))//获取余数fmt.Println(...
// An implementation of Conway's Game of Life.packagemainimport("bytes""fmt""math/rand""time")// Field represents a two-dimensional field of cells.typeFieldstruct{ s [][]boolw, hint}// NewField returns an empty field of the specified width and height.funcNewField(w, hint)*Field { s...
amount.Round(amount,3, inf.RoundUp) }// The max is just a simple cap.ifamount.Cmp(maxAllowed) >0{ amount.Set(maxAllowed) }ifformat == BinarySI && amount.Cmp(decOne) <0&& amount.Cmp(decZero) >0{// This avoids rounding and hopefully confusion, too.format = DecimalSI ...
这是浮点运算的产物。浮点值并不总是你所期望的值，因为不是所有的数字都能用你所使用的浮点格式来...
result = Float(math.Mod(float64(a),float64(b)))default:panic("bad-type") }default:panic("bad-type") } }return}) } 开发者ID:nbaum,项目名称:golem,代码行数:31,代码来源:numbers.gen.go 示例5: isPrime ▲点赞 1▼ // This function will eventually get it's own module.funcisPrime(tint6...
2 java四舍五入java四舍五入方法 在oracle中有一个很好的函数进行四舍五入,round(),select round(111112.23248987,6) from dual;但是java的Number本身不提供四舍五入的方法,在oracle.jbo.domain.Number中提供了round()方法,也可以使用。 在java中可以使用java.math.BigDecimal来进行四舍五入,或者直接使用Decima ...
https://github.com/ericlagergren/decimal https://github.com/hajimehoshi/oto https://github.com/genuinetools/img https://github.com/pquerna/otp https://github.com/go-kit/kit https://github.com/kubernetes/klog https://github.com/xlab/treeprint https://github.com/influxdata/influxdb https:...
type MyInt2 = int var i1 MyInt2 = 1 fmt.Printf("%T",i1) 1. 2. 3. 4. 0. 深入理解Go的slice及其扩容规则 ints := []int{1, 2} // 扩容前 oldCap = 2 fmt.Println(len(ints),cap(ints)) //2 2 ints = append(ints, 3,4,5,6,7) // ...