National Instruments Car Stereo System 320571-01 用户手册

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Chapter 2
NI-DSP Analysis VI Reference
NI-DSP SRM for LabVIEW for Windows
2-61
Part 3:  NI-DSP Function Reference
DSP Polynomial Evaluation
Performs a polynomial evaluation on the input
array X.  The i
th
 element of the output array  Y
is obtained using the following formula:
k-1
Y(i) = 
 (Coefficients(j) * X(i)j)
j=0
for  i = 0, 1, 2, …, n-1,
where n is the number of elements in X and k is the number of elements in Coefficients.
X is a DSP Handle Cluster that indicates the memory buffer on the DSP board that contains the input
signal array X.
Coefficients is a DSP Handle Cluster that indicates the memory buffer on the DSP board that contains
the coefficients array.
Y in is a DSP Handle Cluster that indicates the memory buffer on the DSP board that will contain the
results of output array.
Y out is a DSP Handle Cluster that is identical to Y in, but with the results already stored in the memory
buffer on the DSP board.
error in (no error) contains the error information from a previous VI.  If an error occurs, it is passed out
error out and no other calls are made.
error out contains the error information for this call.
The operation can be performed in place; that is, the input X and the output Y can be the same DSP Handle Cluster.