C语言版，信号数字滤波程序有问题求指导？
程序代码：程序跑不通，问题是：
Error：argument of type “float”is incompatible with parameter of type “float”
*低通滤波处理信号*/
/*20点滤波器系数*/
float h[27]=
{ -0.000717157271056,
-0.002859115151905,
-0.007322125396880,
-0.014242951623687,
-0.022224922136667,
-0.027860512534959,
-0.026133393824031,
-0.011903955491711,
0.017861106212959,
0.061991725990918,
0.114215389756709,
0.164174174504389,
0.200282581002263,
0.213462981531864,
0.200282581002263,
0.164174174504389,
0.114215389756709,
0.061991725990918,
0.017861106212959,
-0.011903955491711,
-0.026133393824031,
-0.027860512534959,
-0.022224922136667,
-0.014242951623687,
-0.007322125396880,
-0.002859115151905,
-0.000717157271056};
void filter(float h[ ],int xin[],int xout[])
{
unsigned int i,j,n;
n=27;
int length = 200;/* 信号为200点＝2s*50Hz采样*/
static int x1[226]; //200+27-1 static int x1[length+20];
int sum;
for(i=0;i<length;i++) x1[n+i-1]=xin[i];
for (i=0;i<length;i++)
{
sum=0;
for(j=0;j<n;j++)
sum+=h[j]*x1[i-j+n-1];
xout[i]=sum;
}
for(i=0;i<(n-1);i++) x1[n-i-2]=xin[length-1-i];
}
