National Instruments 320682C Musical Toy Instrument User Manual


 
Chapter 3 Analysis Library
© National Instruments Corporation 3-29 LabWindows/CVI Standard Libraries
Sort
int
status
=
Sort
(double
inputArray
[], int
numberofElements
, int
direction
,
double
outputArray
[]);
Purpose
Sorts the input array in ascending or descending order. The function performs the operation in
place; that is,
inputArray
and
outputArray
can be the same array.
Parameters
Input
inputArray
double-precision
array
Input array.
numberofElements
integer Number of elements to be
sorted.
direction
integer 0: ascending.
Non-zero: descending.
Output
outputArray
double-precision
array
Sorted array.
Return Value
status
integer Refer to error codes in
Table 3-2.
StdDev
int
status
=
StdDev
(double
inputArray
[], int
numberofElements
, double *
mean
,
double *
standardDeviation
);
Purpose
Computes the standard deviation and the mean (average) values of the input array. The formulas
used to find the mean and the standard deviation are as follows.
meanval x n
i
i
n
=
=
0
1
/
sDev = [x - ave] / n
i=0
n-1
i
2