origin/util/math/math.go

package math

import "github.com/duanhf2012/origin/log"

type NumberType interface {
	int | int8 | int16 | int32 | int64 | float32 | float64 | uint | uint8 | uint16 | uint32 | uint64
}

type SignedNumberType interface {
	int | int8 | int16 | int32 | int64 | float32 | float64
}

type FloatType interface {
	float32 | float64
}

func Max[NumType NumberType](number1 NumType, number2 NumType) NumType {
	if number1 > number2 {
		return number1
	}

	return number2
}

func Min[NumType NumberType](number1 NumType, number2 NumType) NumType {
	if number1 < number2 {
		return number1
	}

	return number2
}

func Abs[NumType SignedNumberType](Num NumType) NumType {
	if Num < 0 {
		return -1 * Num
	}

	return Num
}


func Add[NumType NumberType](number1 NumType, number2 NumType) NumType {
	ret := number1 + number2
	if number2> 0 && ret < number1 {
		log.Stack("Calculation overflow" ,log.Any("number1",number1),log.Any("number2",number2))
	}else if (number2<0 && ret > number1){
		log.Stack("Calculation overflow" ,log.Any("number1",number1),log.Any("number2",number2))
	}

	return ret
}

func Sub[NumType NumberType](number1 NumType, number2 NumType) NumType {
	ret := number1 - number2
	if number2> 0 && ret > number1 {
		log.Stack("Calculation overflow" ,log.Any("number1",number1),log.Any("number2",number2))
	}else if (number2<0 && ret < number1){
		log.Stack("Calculation overflow" ,log.Any("number1",number1),log.Any("number2",number2))
	}

	return ret
}


func Mul[NumType NumberType](number1 NumType, number2 NumType) NumType {
	ret := number1 * number2
	if number1 == 0 || number2 == 0 {
		return ret
	}

	if ret / number2 == number1 {
		return ret
	}

	log.Stack("Calculation overflow" ,log.Any("number1",number1),log.Any("number2",number2))
	return ret
}