给我一个2阶IIR滤波处理陀螺仪数据的实用性较强的C代码

以下是一个实用的2阶IIR滤波器C代码示例，用于处理陀螺仪数据：

#include <stdio.h>
#include <stdlib.h>

#define A1 1.0
#define A2 -1.69065929318241
#define A3 0.73248077421585
#define B1 0.00397285425181
#define B2 0.00794570850362
#define B3 0.00397285425181

double previous_input = 0.0;
double previous_output = 0.0;
double previous_prev_output = 0.0;

double iir_filter(double input)
{
    double output = (B1 * input) + (B2 * previous_input) + (B3 * previous_prev_input) - (A2 * previous_output) - (A3 * previous_prev_output);
    previous_prev_input = previous_input;
    previous_input = input;
    previous_prev_output = previous_output;
    previous_output = output;
    return output;
}

int main()
{
    double input;
    printf("Enter input data:\n");
    scanf("%lf", &input);
    double output = iir_filter(input);
    printf("Output data: %lf\n", output);
    return 0;
}

在这个例子中，A1、A2、A3、B1、B2和B3是IIR滤波器系数。previous_input、previous_output和previous_prev_output是用于存储前一个输入值、输出值和前一个输出值的变量。iir_filter()函数接收输入值并返回过滤后的输出值。

您可以根据需要修改IIR滤波器系数和输入数据源。