From bfcfba4e3f9988820ea7927fe9065545f54e9e2f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=A8=8B=E5=B9=BF?= <chengg@dacentsoft.com>
Date: Wed, 31 Dec 2025 17:48:46 +0800
Subject: [PATCH] =?UTF-8?q?```=20feat(matrix):=20=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E7=9F=A9=E9=98=B5=E6=B1=82=E5=92=8C=E5=8A=9F=E8=83=BD?=
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新增Sum()方法用于计算矩阵所有元素的总和，
遍历矩阵数据并累加所有元素值。
```
---
 matrix.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/matrix.go b/matrix.go
index 34466c5..3f7714f 100644
--- a/matrix.go
+++ b/matrix.go
@@ -164,6 +164,14 @@ func (m *Matrix) Add(other *Matrix) (*Matrix, error) {
 	return NewMatrix(resultData, m.shape)
 }
 
+func (m *Matrix) Sum() float64 {
+	var sum float64 = 0
+	for i := 0; i < m.size; i++ {
+		sum += m.data[i]
+	}
+	return sum
+}
+
 // Subtract 矩阵减法
 // other: 要相减的另一个矩阵
 func (m *Matrix) Subtract(other *Matrix) (*Matrix, error) {