merge

tests/big_decimal_test.cpp

@@ -0,0 +1,41 @@
+#include <bstl/big_decimal.hpp>
+
+#include <cassert>
+#include <iostream>
+#include <string>
+
+int main() {
+    using bstl::BigDecimal;
+
+    // 基本构造
+    BigDecimal a("123.45");
+    BigDecimal b("67.89");
+    BigDecimal c = a + b;
+
+    assert(c.toString() == "191.34");
+
+    // 减法
+    BigDecimal d = a - b;
+    assert(d.toString() == "55.56");
+
+    // 乘法
+    BigDecimal e = a * BigDecimal("2");
+    assert(e.toString() == "246.90");
+
+    // 比较
+    assert((a > b) == true);
+    assert((a == a) == true);
+    assert((a != b) == true);
+
+    // 零
+    BigDecimal zero("0.0");
+    assert(zero.isZero());
+
+    // 负数
+    BigDecimal neg("-100.50");
+    assert(neg.sign() < 0);
+    assert((-neg).toString() == "100.50");
+
+    std::cout << "BigDecimal tests passed\n";
+    return 0;
+}