calculator

分类: 数据库与数据存储 | 上传者: Code-and-Sorts | 下载: 0 | 版本: v1.0（最新）

执行任意精度算术计算，包括加法、减法、乘法、除法和指数。当用户要求计算、计算或评估数学表达式时，或者需要精确的十进制算术以避免浮点错误时使用。

更新日志: Source: GitHub https://github.com/Code-and-Sorts/awesome-copilot-agents

目录结构

当前层级: tree/main/skills/calculator/

📁 scripts/
- 📁 src/
  - 📄 calculator.test.ts 5.8 KB
  - 📄 calculator.ts 5.1 KB
  - 📄 run.ts 354 B
- 📄 jest.config.js 427 B
- 📄 package-lock.json 150.6 KB
- 📄 package.json 582 B
- 📄 tsconfig.json 208 B
📄 SKILL.md 1.8 KB

SKILL.md

---
name: calculator
description: Performs arbitrary-precision arithmetic calculations including addition, subtraction, multiplication, division, and exponents. Use when the user asks to calculate, compute, or evaluate math expressions, or when precise decimal arithmetic is needed to avoid floating-point errors.
license: MIT
compatibility: Requires Node.js and npm
metadata:
  author: Colby Timm
  version: "1.0"
---

# Calculator

Evaluate arithmetic expressions with arbitrary-precision decimal math using [big.js](https://github.com/MikeMcl/big.js/).

## When to Use

- User asks to calculate or evaluate a math expression
- Precise decimal arithmetic is needed (avoids floating-point errors like `0.1 + 0.2 = 0.30000000000000004`)
- Expressions involve parentheses, operator precedence, or exponents

## Supported Operations

| Operator | Description | Precedence |
| -------- | ----------- | ---------- |
| `+` | Addition | 1 |
| `-` | Subtraction | 1 |
| `*` | Multiplication | 2 |
| `/` | Division | 2 |
| `^` | Exponent (right-associative) | 3 |
| `()` | Parentheses | Highest |

## Usage

```bash
cd scripts
npm ci || npm install
npm run build
npm run calculate "<expression>"
```

## Examples

| Input | Output |
| ----- | ------ |
| `"3 + 2"` | `5` |
| `"10 / 4"` | `2.5` |
| `"2 ^ 10"` | `1024` |
| `"(2 + 3) * 4"` | `20` |
| `"1 + 4.5 * (3-6) / 5"` | `-1.7` |
| `"-5 + 3"` | `-2` |
| `"2 ^ 3 ^ 2"` | `512` (right-associative: 2^9) |

## Edge Cases

- **Empty expression**: Throws "Empty expression" error
- **Mismatched parentheses**: Throws "Mismatched parentheses" error
- **Division by zero**: big.js throws an error
- **Exponent must be integer**: big.js `.pow()` requires integer exponents

## Limitations

- No trigonometric functions (sin, cos, tan)
- No variables or symbolic math
- Exponents must be integers
- No factorial, modulo, or bitwise operators

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calculator

目录结构

SKILL.md

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