Essential Functions

This chapter describes the Intel^® IPP functions that perform logical and shift, arithmetic, conversion, windowing, and statistical operations.

The full list of functions in this group is given in the table below.

Intel IPP Essential Vector Functions
Function Base Name	Operation
Logical and Shift Functions
AndC	Computes the bitwise AND of a scalar value and each element of a vector.
And	Computes the bitwise AND of two vectors.
OrC	Computes the bitwise OR of a scalar value and each element of a vector.
Or	Computes the bitwise OR of two vectors.
XorC	Computes the bitwise XOR of a scalar value and each element of a vector.
Xor	Computes the bitwise XOR of two vectors.
Not	Computes the bitwise NOT of the vector elements.
LShiftC	Shifts bits in vector elements to the left.
RShiftC	Shifts bits in vector elements to the right.
arithmetic functions
AddC	Adds a constant value to each element of a vector.
Add	Adds the elements of two vectors.
AddProduct	Adds product of two vectors to the accumulator vector.
AddProductC	Adds product of a vector and a constant to the accumulator vector.
MulC	Multiplies each elements of a vector by a constant value.
Mul	Multiplies the elements of two vectors.
SubC	Subtracts a constant value from each element of a vector.
SubCRev	Subtracts each element of a vector from a constant value.
Sub	Subtracts the elements of two vectors.
DivC	Divides each element of a vector by a constant value.
DivCRev	Divides a constant value by each element of a vector.
Div	Divides the elements of two vectors.
Div_Round	Divides the elements of two vectors with rounding.
Abs	Computes absolute values of vector elements.
Sqr	Computes a square of each element of a vector.
Sqrt	Computes a square root of each element of a vector.
Cubrt	Computes cube root of each element of a vector.
Exp	Computese to the power of each element of a vector.
Ln	Computes the natural logarithm of each element of a vector.
10Log10	Computes the decimal logarithm of each element of a vector and multiplies it by 10.
SumLn	Sums natural logarithms of each element of a vector.
Arctan	Computes the inverse tangent of each element of a vector.
Normalize	Normalizes elements of a real or complex vector using offset and division operations.
Cauchy, CauchyD, CauchyDD2	Computes Cauchy robust error function, and its first and second derivatives
Conversion Functions
SortAscend, SortDescend	Rearranges all elements of a vector.
SortIndexAscend, SortIndexDescend	Rearranges all elements of the vector and their indexes.
SortRadixAscend, SortRadixDescend	Sorts all elements of a vector using radix sorting algorithm.
SortRadixIndexAscend, SortRadixIndexDescend	Indirectly sorts all elements of a vector using radix sorting algorithm.
SwapBytes	Reverses byte order of a vector.
Convert	Converts the data type of a vector and stores the results in a second vector.
Join	Converts the floating-point data of several vectors to integer data, and stores the results in a single vector.
JoinScaled	Converts with scaling the floating-point data of several vectors to integer data, and stores the results in a single vector.
SplitScaled	Converts with scaling the integer data of a vector to floating-point data, and stores the result in several vectors.
Conj	Stores the complex conjugate values of a vector in a second vector or in-place.
ConjFlip	Computes the complex conjugate of a vector and stores the result in reverse order.
Magnitude	Computes the magnitudes of the elements of a complex vector.
MagSquared	Computes the squared magnitudes of the elements of a complex vector.
Phase	Computes the phase angles of elements of a complex vector.
PowerSpectr	Computes the power spectrum of a complex vector.
Real	Returns the real part of a complex vector in a second vector.
Imag	Returns the imaginary part of a complex vector in a second vector.
RealToCplx	Returns a complex vector constructed from the real and imaginary parts of two real vectors.
CplxToReal	Returns the real and imaginary parts of a complex vector in two respective vectors.
DemodulateFM	Converts frequency modulated signal into the initial demodulated form.
Threshold, Threshold_LT, Threshold_GT, Threshold_LTVal, Threshold_GTVal, Threshold_LTValGTVal	Performs the threshold operation on the elements of a vector by limiting the element values by the specified value.
Threshold_LTAbs, Threshold_GTAbs	Performs the threshold operation on the absolute values of elements of a vector.
Threshold_LTInv	Computes the inverse of vector elements after limiting their magnitudes by the given lower bound.
CartToPolar	Converts the elements of a complex vector to polar coordinate form.
PolarToCart	Converts the polar form magnitude/phase pairs stored in input vectors to Cartesian coordinate form.
MaxOrder	Computes the maximum order of a vector.
Preemphasize	Computes preemphasis of a single precision real signal in-place.
Flip	Reverses the order of elements in a vector.
FindNearestOne	Finds an element of the table which is closest to the specified value.
FindNearest	Finds table elements that are closest to the elements of the specified vector.
Viterbi Decoder Functions
GetVarPointDV	Fills the array with the information about points that are closest to the received point.
CalcStatesDV	Calculates the states of the Viterbi decoder.
BuildSymblTableDV4D	Fills the array with the information about possible 4D symbols.
UpdatePathMetricsDV	Searches for the state with the minimum path metric.
Windowing Functions
WinBartlett	Multiplies a vector by a Bartlett windowing function.
WinBlackman	Multiplies a vector by a Blackman windowing function.
WinHamming	Multiplies a vector by a Hamming windowing function.
WinHann	Multiplies a vector by a Hann windowing function.
WinKaiser	Multiplies a vector by a Kaiser windowing function.
Statistical Functions
Sum	Computes the sum of the elements of a vector.
Max	Returns the maximum value of a vector.
MaxIndx	Returns the maximum value of a vector and the index of the maximum element.
MaxAbs	Returns the maximum absolute value of a vector.
MaxAbsIndx	Returns the maximum absolute value of a vector and the index of the corresponding element
Min	Returns the minimum value of a vector.
MinIndx	Returns the minimum value of a vector and the index of the minimum element.
MinAbs	Returns the minimum absolute value of a vector.
MinAbsIndx	Returns the minimum absolute value of a vector and the index of the corresponding element
MinMax	Returns the maximum and minimum values of a vector.
MinMaxIndx	Returns the maximum and minimum values of a vector and the indexes of the corresponding elements.
Mean	Computes the mean value of a vector.
StdDev	Computes the standard deviation value of a vector.
MeanStdDev	Computes the mean value and the standard deviation value of a vector.
Norm	Computes the C, L1, L2, or L2Sqr norm of a vector.
NormDiff	Computes the C, L1, L2, or L2Sqr norm of two vectors' difference.
DotProd	Computes the dot product of two vectors.
MaxEvery, MinEvery	Computes maximum or minimum value for each pair of elements of two vectors.
ZeroCrossing	Computes specific zero crossing measure.
CountInRange	Computes the number of elements of the vector whose values are in the specified range.
Sampling Functions
SampleUp	Up-samples a signal, conceptually increasing its sampling rate by an integer factor.
SampleDown	Down-samples a signal, conceptually decreasing its sampling rate by an integer factor.