# nano_stopwatch

**Repository Path**: tiger_git/nano_stopwatch

## Basic Information

- **Project Name**: nano_stopwatch
- **Description**: 一个header only的纳秒精度的计时器，可用于性能分析，支持Windows和Linux。
- **Primary Language**: C
- **License**: MulanPSL-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2022-11-04
- **Last Updated**: 2023-06-11

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# nano_stopwatch

一个纳秒精度的计时器，支持Windows和Linux。

## 示例
```c
#include <stdio.h>
#include "nano_stopwatch.h"

int main() {
	nsw_t nsw = nsw_init();
	printf("elapsed ns: %.2f\n", nsw_elapsed_ns(&nsw));
	printf("cpu_cycle = %f\n", __nano_stopwatch_cpu_freq_per_ns);
#ifdef _WIN32
	Sleep(1000);
#else
	usleep(1000000);
#endif // _WIN32
	printf("elapsed us: %.2f\n", nsw_elapsed_us(&nsw));
	return 0;
}

输出：
elapsed ns: 20.56
cpu_cycle = 3.696000
elapsed us: 1013685.23
```