Initial commit

src/math_utils.cpp

@@ -0,0 +1,89 @@
+#include "math_utils.h"
+#include <cmath>
+#include <cstdlib>
+#include <iostream>
+
+// 包含 emscripten 头文件
+#ifdef __EMSCRIPTEN__
+#include <emscripten.h>
+#else
+// 非 Emscripten 环境的替代定义
+#define EMSCRIPTEN_KEEPALIVE
+#endif
+
+// 所有函数都加上 EMSCRIPTEN_KEEPALIVE
+EMSCRIPTEN_KEEPALIVE
+int add(int a, int b)
+{
+    return a + b;
+}
+
+EMSCRIPTEN_KEEPALIVE
+int subtract(int a, int b)
+{
+    return a - b;
+}
+
+EMSCRIPTEN_KEEPALIVE
+float multiply(float a, float b)
+{
+    return a * b;
+}
+
+EMSCRIPTEN_KEEPALIVE
+float divide(float a, float b)
+{
+    if (b == 0.0f)
+    {
+        std::cerr << "Error: Division by zero" << std::endl;
+        return 0.0f;
+    }
+    return a / b;
+}
+
+EMSCRIPTEN_KEEPALIVE
+int fibonacci(int n)
+{
+    if (n <= 1)
+        return n;
+    return fibonacci(n - 1) + fibonacci(n - 2);
+}
+
+EMSCRIPTEN_KEEPALIVE
+void *create_buffer(int size)
+{
+    if (size <= 0)
+        return nullptr;
+    return malloc(size * sizeof(char));
+}
+
+EMSCRIPTEN_KEEPALIVE
+void destroy_buffer(void *p)
+{
+    if (p)
+    {
+        free(p);
+    }
+}
+
+EMSCRIPTEN_KEEPALIVE
+int compute_sum(int *arr, int size)
+{
+    if (arr == nullptr || size <= 0)
+    {
+        return 0;
+    }
+
+    int sum = 0;
+    for (int i = 0; i < size; i++)
+    {
+        sum += arr[i];
+    }
+    return sum;
+}
+
+EMSCRIPTEN_KEEPALIVE
+const char *get_greeting()
+{
+    return "Hello from Smart WebAssembly!";
+}