Advanced Analysis Library Only
AnalysisLibErrType Convolve (double YArray[], int numberYElements, double XArray[], int numberXElements, double HArray[]);
Finds the convolution of the input arrays. Convolve obtains the convolution using the following formula:
where | a = 0, b = i for 0 ![]() |
a = i m + 1, b = i for m ![]() |
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a = i m + 1, b = n 1 for n ![]() ![]() |
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Note This formula description assumes that m ![]() |
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Note This function temporarily allocates memory for use as a work area. If Convolve cannot allocate memory, the function returns an error code. |
/* Generate two arrays with random numbers and find their convolution. */
double x[256], y[256], cxy[512];
int n, m;
n = 256;
m = 256;
Uniform (n, 17, x);
Uniform (m, 17, y);
Convolve (x, n, y, m, cxy);
Input | ||
Name | Type | Description |
YArray | double-precision array | First input array. |
numberYElements | integer | Number of elements in YArray. |
XArray | double-precision array | Second input array. |
numberXElements | integer | Number of elements in XArray. numberXElements must be less than or equal to numberYElements. |
Output | ||
Name | Type | Description |
HArray | double-precision array | Convolution array. The size of this array must be at least |
Name | Type | Description |
status | AnalysisLibErrType | A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants. |