From 4f013f593eaba1cff4f39d5e8cb091473f0acfd4 Mon Sep 17 00:00:00 2001
From: kercylan98 <kercylan@gmail.com>
Date: Sat, 20 May 2023 11:42:49 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BE=85=E5=8A=A9=E5=87=BD=E6=95=B0?=
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---
 utils/maths/math.go    | 49 ++++++++++++++++++++++++++++++++++++++++++
 utils/network/float.go | 17 +++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 utils/maths/math.go
 create mode 100644 utils/network/float.go

diff --git a/utils/maths/math.go b/utils/maths/math.go
new file mode 100644
index 0000000..ac9ec39
--- /dev/null
+++ b/utils/maths/math.go
@@ -0,0 +1,49 @@
+package maths
+
+// Pow 整数幂运算
+func Pow(a, n int) int {
+	if a == 0 {
+		return 0
+	}
+	if n == 0 {
+		return 1
+	}
+	if n == 1 {
+		return a
+	}
+	var result int = 1
+	factor := a
+	for n != 0 {
+		if n&1 != 0 {
+			// 当前位是 1，需要乘进去
+			result *= factor
+		}
+		factor *= factor
+		n = n >> 1
+	}
+	return result
+}
+
+// PowInt64 整数幂运算
+func PowInt64(a, n int64) int64 {
+	if a == 0 {
+		return 0
+	}
+	if n == 0 {
+		return 1
+	}
+	if n == 1 {
+		return a
+	}
+	var result int64 = 1
+	factor := a
+	for n != 0 {
+		if n&1 != 0 {
+			// 当前位是 1，需要乘进去
+			result *= factor
+		}
+		factor *= factor
+		n = n >> 1
+	}
+	return result
+}
diff --git a/utils/network/float.go b/utils/network/float.go
new file mode 100644
index 0000000..9226a92
--- /dev/null
+++ b/utils/network/float.go
@@ -0,0 +1,17 @@
+package network
+
+import (
+	"fmt"
+	"github.com/kercylan98/minotaur/utils/generic"
+	"github.com/kercylan98/minotaur/utils/maths"
+	"strings"
+)
+
+// FloatEnlarge 用于将浮点型放大后进行网络传输，返回放大后的值和放大的倍率
+//   - 存在精度丢失问题，如1.13
+func FloatEnlarge[F generic.Float](f F) (value int64, multi int64) {
+	str := fmt.Sprint(f)
+	multi = maths.PowInt64(10, int64(len(str[strings.Index(str, ".")+1:])))
+	value = int64(f * F(multi))
+	return
+}