添加项目文件。

2025-07-01 16:04:35 +08:00
parent 27b960a881
commit 0f8e7d3282
13 changed files with 755 additions and 0 deletions
--- a/ScientificCalculator/PostfixEval.cpp
+++ b/ScientificCalculator/PostfixEval.cpp
@@ -0,0 +1,97 @@
+#include"PostfixEval.h"
+#include<algorithm>
+#include<cctype>
+
+double PostfixEval::run(const std::vector<Token>& postfix, const unordered_map<string, double>& vars) {
+	stack<double> stk;
+
+	for (const auto& token : postfix) {
+		if (token.is_num())
+			//<2F><><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>Ϊdouble<6C><65>ջ
+			stk.push(stod(token.value));
+		else if (token.is_var()) {
+			//<2F><><EFBFBD>ұ<EFBFBD><D2B1><EFBFBD>ӳ<EFBFBD><D3B3><EFBFBD><EFBFBD>
+			auto it = vars.find(token.value);
+			// ֧<><D6A7><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD><C3B3><EFBFBD> PAI <20><> e
+			
+			if (it == vars.end()) {
+				if (token.value == "PAI")
+					stk.push(2.0 * std::asin(1.0));  // <20><> = 2 * arcsin(1)
+				else if (token.value == "e")
+					stk.push(std::exp(1.0));         // e = exp(1)
+				else
+					throw runtime_error("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD>壺" + token.value);
+			}
+			else stk.push(it->second);
+		}
+		else if (token.is_ope()) {
+			//ȡ<><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD>ж<EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD>
+			if (stk.size() < 2)	throw runtime_error("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
+			double b = stk.top();
+			stk.pop();
+			double a = stk.top();
+			stk.pop();
+			double res = apply_BO(token.value, a, b);
+			stk.push(res);
+		}
+		else if (token.is_fun()) {
+			//ȡ<><C8A1>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4>һԪ<D2BB><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ⱥ<EFBFBD><C8BA><EFBFBD><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>
+			if (stk.empty())	throw runtime_error("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
+			double x = stk.top();
+			stk.pop();
+			double res = apply_UF(token.value, x);
+			stk.push(res);
+		}
+		else
+			throw runtime_error("δ֪Token<EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
+	}
+
+	if (stk.size() != 1)
+		throw runtime_error("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD>󣬼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ջ<EFBFBD><EFBFBD>Ψһ");
+
+	return stk.top();
+}
+
+//<2F><><EFBFBD>ж<EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+double PostfixEval::apply_BO(const string& op, double a, double b) {
+	if (op == "+")	return a + b;
+	if (op == "-")	return a - b;
+	if (op == "*")	return a * b;
+	if (op == "/") {
+		if (b == 0) throw runtime_error("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ0");
+		return a / b;
+	}
+	if (op == "^")	return pow(a, b);
+	if (op == "%") {
+		if (b == 0) throw runtime_error("ģ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>");
+		return std::fmod(a, b);
+	}
+	throw runtime_error("δ֪<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>" + op);
+}
+
+//<2F><><EFBFBD><EFBFBD>һԪ<D2BB><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ⱥ<EFBFBD><C8BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+double PostfixEval::apply_UF(const string& func, double x) {
+	string f = func;
+	transform(f.begin(), f.end(), f.begin(), ::tolower);
+
+	if (f == "sin")	return sin(x);
+	if (f == "cos")	return cos(x);
+	if (f == "tan")	return tan(x);
+	if (f == "sqrt") {
+		if (x < 0)	
+			throw runtime_error("sqrt<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>");
+		return sqrt(x);
+	}
+	if (f == "log") {
+		if (x <= 0)
+			throw runtime_error("log<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0");
+		return log(x);
+	}
+	if (f == "exp")	return exp(x);
+	if (f == "abs")	return fabs(x);
+	if (f == "asin")	return asin(x);
+	if (f == "acos")	return acos(x);
+	if (f == "atan")	return atan(x);
+
+	throw runtime_error("δ֪<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>" + func);
+}