SigLib Complete Function List

This page contains a complete list of all the functions in the SigLib ANSI C source code DSP library. A complete list of example programs can be viewed on-line.
The library is split into the following sections :

Frequency Domain Functions

  SIF_Fft                    - Initialise FFT functionality
  SDA_Rfft                   - Real to Complex Fast Fourier Transform (FFT)
  SDA_Cfft                   - Complex to complex FFT
  SDA_Cifft                  - Complex to complex Inverse FFT
  SDA_BitReverseReorder      - Bit reverse reorder the data
  SDA_IndexBitReverseReorder - Bit reverse reorder the data index
  SIF_FastBitReverseReorder  - Initialise fast mode bit reverse reordering
  SDA_RealRealCepstrum       - Real to real cepstrum analysis
  SDA_RealComplexCepstrum    - Real to complex cepstrum analysis
  SDA_ComplexComplexCepstrum - Complex to complex cepstrum analysis
  SIF_FftTone                - Initialise FFT tone detection functionality
  SDA_RfftTone               - FFT tone detection functionality
  SIF_ZoomFft                - Initialise zoom FFT functionality
  SDA_ZoomFft                - Real to Complex zoom-Fast Fourier Transform (FFT)
  SIF_ZoomFftSimple          - Initialise zoom FFT functionality - more efficient but less complex variant
  SDA_ZoomFftSimple          - Real to Complex zoom-Fast Fourier Transform (FFT) - more efficient but less complex variant
  SIF_FdHilbert              - Initialize frequency domain Hilbert transform function
  SDA_FdHilbert              - Frequency domain Hilbert transformer
  SIF_FdAnalytic             - Initialize frequency domain analytic signal generator
  SDA_FdAnalytic             - Frequency domain analytic signal generator
  SDA_InstantFreq            - Instantaneous frequency analyser
  SDA_Rft                    - Real to Complex Fourier Transform
  SDA_Rift                   - Real Inverse Fourier Transform
  SDA_FftShift               - Shift the D.C. bin from 0 to N/2 or V.V. for real data
  SDA_CfftShift              - Shift the D.C. bin from 0 to N/2 or V.V. for complex data
  SIF_ArbFft                 - Initialise the arbitrary FFT operation 
  SUF_ArbFftAllocLength      - Return length of FFT for arbitrary length transform
  SDA_ArbRfft                - Arbitrary real FFT operation using chirp z-transform
  SDA_ArbCfft                - Arbitrary complex FFT operation using chirp z-transform
  SDA_ArbCifft               - Arbitrary complex inverse FFT operation using chirp z-transform
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Power Spectrum Functions

  SIF_FastAutoCrossPowerSpectrum - Initialise fast auto and cross power spectrum functions
  SDA_FastAutoPowerSpectrum     - Fast auto power spectrum
  SDA_FastCrossPowerSpectrum    - Fast cross power spectrum
  SIF_ArbAutoCrossPowerSpectrum - Initialise arbitrary length fast auto and cross power spectrum functions
  SDA_ArbAutoPowerSpectrum      - Arbitrary length auto power spectrum
  SDA_ArbCrossPowerSpectrum     - Arbitrary length cross power spectrum
  SIF_WelchPowerSpectrum        - Initilaise the Welch power spectrum functions
  SDA_WelchRealPowerSpectrum    - Initilaise the Welch power spectrum functions
  SDA_WelchComplexPowerSpectrum - Welch complex power spectrum
  SIF_MagnitudeSquaredCoherence - Initilaise the magnitude squared coherence functions
  SDA_MagnitudeSquaredCoherence - Magnitude squared coherence function
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Frequency Domain Filtering Functions

  SIF_FirOverlapAdd          - Initialise overlap and add FFT filtering functionality
  SDA_FirOverlapAdd          - Overlap and add FFT filter
  SIF_FirOverlapAdd          - Initialise overlap and save FFT filtering functionality
  SDA_FirOverlapAdd          - Overlap and save FFT filter
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Chirp z-Transform Initialisation Functions

  SIF_Czt                    - Initialisation function for the chirp z-transform
  SIF_Awn                    - Generate complex window coeffs
  SIF_Vl                     - Generate contour definition coeffs
  SIF_Wm                     - Generate weighting coeffs
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Windowing Functions

  SIF_Window                 - Initialise windowing functionality
  SIF_TableTopWindow         - Initialise the table top (flat centre section) windowing functionality
  SDA_Window                 - Apply window to a array of data
  SDA_ComplexWindow          - Apply a complex window to a complex stream
  SDA_WindowInverseCoherentGain - Calculate inverse coherent window gain
  SDS_I0Bessel               - Calculate the Izero Bessel function

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Filtering Functions

FIR Filter Functions
  SIF_Fir                    - Initialise FIR filter functionality
  SDS_Fir                    - Perform FIR filter on a data sample
  SDA_Fir                    - Perform FIR filter on a array of data
  SDS_FirAddSample           - Add a sample to the filter delay line
  SDA_FirAddSamples          - Add multiple samples to the filter delay line
  SIF_Comb                   - Initialise comb filter functionality
  SDS_Comb                   - Perform a comb filter on a data sample
  SDA_Comb                   - Perform a comb filter on a data array
  SIF_ComplexFir             - Initialise a complex filter
  SDA_ComplexFir             - Perform a complex filter on a data stream
  SIF_BandPassFirFilter      - Create a band pass filter with the given centre frequency
  SIF_LowPassFirFilter       - Create a low pass filter with the given centre frequency
  SIF_HighPassFirFilter      - Create a high pass filter with the given centre frequency
  SUF_KaiserApproximation    - Approximate the desired number of FIR filter coefficients using the Kaiser approximation
  SDA_FirFilterInverseCoherentGain - Calculate the inverse coherent gain for an FIR filter
  SIF_MatchedFirFilter       - Initialize coefficients for a matched FIR filter from a given data set
IIR Filter Functions
  SIF_Iir                    - Initialise IIR filter functionality - uses the biquad filter structure
  SDS_Iir                    - Perform IIR filter on a data sample - uses the biquad filter structure
  SDA_Iir                    - Perform IIR filter on a array of data - uses the biquad filter structure
  SIF_OrderNIir              - Initialise the order N IIR filter functionality - uses a single order N structure
  SDS_OrderNIir              - Perform an order N IIR filter on a data sample - uses a single order N structure
  SDA_OrderNIir              - Perform an order N IIR filter on a array of data - uses a single order N structure
  SIF_NcIir                  - Initialise bi-directional (non-causal) IIR filter functionality
  SDA_NcIir                  - Perform bi-directional (non-causal) IIR filter on a array of data
  SDA_BilinearTransform      - Transform poles and zeros from s-plane to z-plane using the bilinear transform
  SDA_PreWarp                - Pre-warps frequencies for bilinear transform
  SDA_MatchedZTransform      - Transform poles and zeros from s-plane to z-plane using the matched z-transform
  SDA_IirZplaneToCoeffs      - Translate rectangular z-plane poles and zeros to IIR coefficients
  SDA_IirZplanePolarToCoeffs - Translate polar z-plane poles and zeros to IIR coefficients
  SDA_IirZplaneLpfToLpf      - Frequency translate a low-pass filter
  SDA_IirZplaneLpfToHpf      - Translate a low-pass filter to high pass
  SDA_IirZplaneLpfToBpf      - Translate a low-pass filter to band pass
  SDA_IirZplaneLpfToBsf      - Translate a low-pass filter to band stop
  SDA_ModifyIirFilterGain    - Modify the pass band gain of the IIR filter
  SDS_RemoveDC               - Remove the DC component of a signal using an IIR filter
  SDA_RemoveDC               - Remove the DC component of a signal using an IIR filter
  SIF_OnePole                - Initialize the one pole filter functions
  SDS_OnePole                - Apply a one pole filter on a data sample
  SDA_OnePole                - Apply a one pole filter on a array of data
  SDS_OnePoleNormalized      - Apply a one pole filter on a data sample. The step response gain is normalized to 1.0
  SDA_OnePoleNormalized      - Apply a one pole filter on a array of data. The step response gain is normalized to 1.0
  SDA_OnePolePerSample       - Apply a one pole filter, between arrays of data
  SIF_AllPole                - Initialise the all pole IIR filter functionality
  SDS_AllPole                - Apply an all pole filter on a data sample
  SDA_AllPole                - Apply an all pole filter on a array of data
  SDA_ZDomainCoefficientReorg - Reorganises z-domain coefficients from Digital Filter Plus
  SIF_IirNotchFilter         - Generate the coefficients for an IIR notch filter
  SIF_IirNormalizedCoefficients - Generate normalized Butterworth and Bessel low-pass filter coefficients
  SIF_IirNormalizedSPlaneCoefficients - Generate normalized s-Plane Butterworth and Bessel low-pass filter coefficients
  SDA_TranslateSPlaneCutOffFrequency - Translate the cut-off frequency of a low-pass filter
  SDA_IirLpLpShift           - Shift the cut-off frequency of an IIR digital filter
  SDA_SDA_IirLpHpShift       - Transform a LPF IIR filter into a HPF and shift the cut-off frequency
Generic Filtering Functions
  SDA_Integrate              - Integrate the waveform
  SDA_Differentiate          - Differentiate the waveform
  SIF_LeakyIntegrator        - Initialise the leaky integrator
  SDS_LeakyIntegrator1       - Leaky integrator - Limit and add input
  SDS_LeakyIntegrator2       - Leaky integrator - Add input and limit
  SIF_HilbertTransformer     - Initialise Hilbert transformer filter coefficients
  SIF_GoertzelFilter         - Initialise Goertzel filter coefficients
  SDA_GoertzelFilter         - Apply Goertzel filter
  SDA_GoertzelDetect         - Apply Goertzel filter in signal detect mode
  SIF_GoertzelFilterComplex  - Initialise Goertzel filter coefficients
  SDA_GoertzelDetectComplex  - Apply Goertzel filter in signal detect mode
  SIF_GaussianFilter         - Initialise Gaussian filter coefficients
  SIF_GaussianFilter2        - Initialise Gaussian filter coefficients - second type
  SIF_RaisedCosineFilter     - Initialise a raised cosine filter coefficients
  SIF_RootRaisedCosineFilter - Initialise a root raised cosine filter coefficients
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Adaptive Filtering Functions

  SIF_Lms                    - Initialise adaptive filter functionality
  SDS_Lms                    - Perform filter on a data sample
  SDA_LmsUpdate              - Update LMS filter taps
  SDA_LeakyLmsUpdate         - Update leaky LMS filter taps
  SDA_NormalizedLmsUpdate    - Update normalized LMS filter taps
  SDA_SignErrorLmsUpdate     - Update signed error LMS filter taps
  SDA_SignDataLmsUpdate      - Update signed data LMS filter taps
  SDA_SignSignLmsUpdate      - Update signed sign LMS filter taps
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Convolution, Deconvolution And Correlation Functions

  SDA_ConvolveLinear         - Linearly convolve input with impulse response
  SDA_ConvolvePartial        - Partially convolve input with impulse response
  SDA_ConvolveCircular       - Cyclic convolve input with impulse response
  SDA_Deconvolution          - Deconvolve a signal and an impulse response
  SDA_CorrelateLinear        - Linear cross correlate two data arrays
  SDA_CorrelatePartial       - Partial linear cross correlate two data arrays
  SDA_CorrelateCircular      - Cyclic cross correlate two data arrays
  SDA_Covariance             - Calculate the covariance of two data arrays
  SDA_CovariancePartial      - Calculate part of the covariance of two data arrays
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Delay Functions

  SIF_Delay                  - Initialise the delay functions
  SDS_Delay                  - Delay the data by a number of samples
  SDA_Delay                  - Delay the data in an array by a number of samples
  SIF_DelayComplex           - Initialise the complex delay functions
  SDS_DelayComplex           - Delay the complex data by a number of samples
  SDA_DelayComplex           - Delay the complex data in an array by a number of samples
  SDA_ShortDelay             - Delay the data in an array by a small number of samples
  SIF_FifoDelay              - Initialise the FIFO delay functions
  SDS_FifoDelay              - Apply a single input sample into the FIFO delay
  SDA_FifoDelay              - Apply an array of data into the FIFO delay
  SIF_FifoDelayComplex       - Initialise the complex FIFO delay functions
  SDS_FifoDelayComplex       - Apply a single input sample into the complex FIFO delay
  SDA_FifoDelayComplex       - Apply an array of data into the complex FIFO delay
  SUF_IncreaseFifoDelay      - Increase the FIFO delay by a number of samples
  SUF_DecreaseFifoDelay      - Decrease the FIFO delay by a number of samples
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Image Processing Functions

  SIM_Fft2d                  - Perform 2d FFT on image
  SIF_Fft2d                  - Initialise 2d FFT
  SIM_Conv3x3                - Convolve an image with a 3x3 kernel
  SIM_Sobel3x3               - Apply a 3x3 Sobel edge detection filter
  SIM_SobelVertical3x3       - Apply a vertical 3x3 Sobel filter
  SIM_SobelHorizontal3x3     - Apply a horizontal 3x3 Sobel filter
  SIM_Median3x3              - Apply a 3x3 median filter
  SIF_ConvCoefficients3x3    - Initialize a 3x3 convolution filter
  SDA_Histogram              - Produce histogram of data
  SDA_HistogramEqualize      - Equalize the histogram of the data
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Image Coding Functions

  SIF_Dct8x8                 - Initialise the DCT functionality
  SIM_Dct8x8                 - Apply an 8x8 DCT to an image block
  SIM_Idct8x8                - Apply an inverse 8x8 DCT to an image block
  SIM_ZigZagScan             - Zig-zag scan an image block
  SIM_ZigZagDescan           - Zig-zag scan an image array
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Signal Generation Functions

  SDA_SignalGenerate         - Generate a signal (sin, cos, square, ramp etc.)
  SDA_SigGenRamp             - Generate a ramp signal
  SIF_Resonator              - Initialise the resonator
  SDA_Resonator              - A digital resonator
  SDA_Resonator1             - Another digital resonator
  SDA_Resonator1Add          - Add a sample into digital resonator1
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Modulation And Communication Functions

  SDA_BitErrorRate           - Calculate bit error rate for a signal
  SDA_Interleave             - Interleave the samples in a data stream
  SDA_Deinterleave           - De-interleave the samples in a data stream
  SDS_EuclideanDistance      - Return the Euclidean distance between two vectors
  SDS_EuclideanDistanceSquared - Return the square of the Euclidean distance between two vectors

  SDS_ManchesterEncode       - Apply Manchester encoding to the source data bit
  SDS_ManchesterDecode       - Apply Manchester decoding to the source data bit
  SDS_ManchesterEncodeByte   - Apply Manchester encoding to the source data byte
  SDS_ManchesterDecodeByte   - Apply Manchester decoding to the source data byte

  SIF_DetectNumericalWordSequence - Initialize function to detect a sequence of numerical words
  SDS_DetectNumericalWordSequence - Detect a sequence of numerical words
  SIF_DetectNumericalBitSequence - Initialize function to detect a sequence of numerical bits
  SDS_DetectNumericalBitSequence - Detect a sequence of numerical bits
  SIF_DetectCharacterSequence - Initialize function to detect a sequence of characters
  SDS_DetectCharacterSequence - Detect a sequence of characters

  SIF_PhaseLockedLoop        - Initialise phase locked loop
  SDS_PhaseLockedLoop        - Phase locked loop on per sample basis
  SDA_PhaseLockedLoop        - Phase locked loop on array basis
  SIF_CostasLoop             - Initialise Costas loop
  SDS_CostasLoop             - Costas loop on per sample basis
  SDA_CostasLoop             - Costas loop on array basis
  SRF_CostasLoop             - Reset the Costas loop functions
  SIF_180DegreePhaseDetect   - Initialise the 180 degree phase shift detector
  SDA_180DegreePhaseDetect   - Detect 180 degree phase shifts in the input signal

  SIF_TriggerReverberator    - Initialise the trigger reverberator - ensures trigger continues if signal diminishes
  SDA_TriggerReverberator    - Apply the trigger reverberator on per sample basis
  SDS_TriggerReverberator    - Apply the trigger reverberator on array basis
  SDA_TriggerSelector        - Trigger selector function

  SIF_EarlyLateGate          - Initialise the early-late-gate timing error detector
  SDA_EarlyLateGate          - Apply the early-late-gate timing error detector on per sample basis
  SDS_EarlyLateGate          - Apply the early-late-gate timing error detector on array basis
  SIF_EarlyLateGateSquarePulse - Initialise the early-late-gate timing error detector on a square pulse input
  SDA_EarlyLateGateSquarePulse - Apply the early-late-gate timing error detector on per sample basis
  SDS_EarlyLateGateSquarePulse - Apply the early-late-gate timing error detector on array basis

  SDS_ConvEncoderK3          - K = 3, rate 1/2 convolutional encoder (trellis coded modulator)
  SIF_ViterbiDecoderK3       - Initialise K = 3, rate 1/2 Viterbi decoder
  SDS_ViterbiDecoderK3       - K = 3, rate 1/2 Viterbi decoder
  SDS_ConvEncoderV32         - V.32 (32QAM) convolutional encoder (trellis coded modulator)
  SIF_ViterbiDecoderV32      - Initialise V.32 (32QAM) Viterbi decoder
  SDS_ViterbiDecoderV32      - V.32 (32QAM) Viterbi decoder

  SIF_AmplitudeModulate      - Initialize amplitude modulation function
  SDA_AmplitudeModulate      - Amplitude modulate a signal on a per array basis
  SDS_AmplitudeModulate      - Amplitude modulate a signal on a per sample basis
  SIF_AmplitudeModulate2     - Initialize amplitude modulation function - version 2
  SDA_AmplitudeModulate2     - Amplitude modulate a signal on a per array basis - version 2
  SDS_AmplitudeModulate2     - Amplitude modulate a signal on a per sample basis - version 2
  SDA_ComplexShift           - Complex frequency shift a signal. Can also operate as a lock-in amplifier
  SIF_ComplexShift           - Initialise complex frequency shifting
  SIF_FrequencyModulate      - Initialize frequency modulation functions
  SDS_FrequencyModulate      - Frequency modulate a signal - per sample basis
  SDA_FrequencyModulate      - Frequency modulate a signal - array basis
                             - Can also be used for Voltage Controlled Oscillator (VCO or NCO)
  SDA_FrequencyDemodulate    - Demodulate an FM signal
  SIF_FrequencyModulateComplex - Initialize complex frequency modulation functions
  SDS_FrequencyModulateComplex - Frequency modulate a complex signal - per sample basis
  SDA_FrequencyModulateComplex - Frequency modulate a complex signal - array basis
  SDA_DeltaModulate          - Delta modulate a signal
  SDA_DeltaDemodulate        - Demodulate an delta modulated signal
  SDA_DeltaModulate2         - Another function to delta modulate a signal

  SIF_CostasQamDemodulate      - Initilize the Costas loop based QAM / QPSK demodulator functions. Includes early-late-gate timing error detector
  SDS_CostasQamDemodulate      - Implement the Costas loop based QAM / QPSK demodulator functions on a per sample basis
  SDS_CostasQamDemodulateDebug - Implement the Costas loop based QAM / QPSK demodulator functions on a per sample basis with debug information
  SDA_CostasQamDemodulate      - Implement the Costas loop based QAM / QPSK demodulator functions on an array basis
  SDA_CostasQamDemodulateDebug - Implement the Costas loop based QAM / QPSK demodulator functions on an array basis with debug information
  SIF_QpskModulate           - Initialise the QPSK modulation function
  SDA_QpskModulate           - QPSK modulate a signal
  SIF_QpskDemodulate         - Initialise the QPSK demodulation function
  SDA_QpskDemodulate         - Demodulate a QPSK signal
  SDA_QpskDemodulateDebug    - Demodulate a QPSK signal, with debug output
  SDA_QpskDifferentialEncode - QPSK differential encoding
  SDA_QpskDifferentialDecode - QPSK differential decoding
  SIF_FskModulate            - Initialise the FSK modulation function
  SDA_FskModulateByte        - FSK modulate a signal - 8 bit byte input
  SDA_FskDemodulateByte      - Demodulate a FSK (and CP-FSK) signal - 8 bit byte output
  SDA_CpfskModulateByte      - Continuous phase FSK modulate a signal - 8 bit byte input
  SDA_FskModulate            - FSK modulate a signal - 1 bit input
  SDA_FskDemodulate          - Demodulate an FSK (and CP-FSK) signal - 1 bit output
  SDA_CpfskModulate          - Continuous phase FSK modulate a signal - 1 bit input
  SIF_Qam16Modulate          - Initialise the QAM-16 modulation function
  SDA_Qam16Modulate          - QAM-16 modulate a signal
  SIF_Qam16Demodulate        - Initialise the QAM-16 demodulation function
  SDA_Qam16Demodulate        - QAM-16 demodulate a signal
  SDA_Qam16DemodulateDebug   - QAM-16 demodulate a signal (with debug information)
  SDA_Qam16DifferentialEncode - QAM-16 differential encoding
  SDA_Qam16DifferentialDecode - QAM-16 differential decoding
  SIF_BpskModulate           - Initialise the BPSK modulation function
  SDA_BpskModulate           - BPSK modulate a signal
  SDA_BpskModulateByte       - BPSK modulate a signal - 8 bit byte input
  SIF_BpskDemodulate         - Initialise the BPSK demodulation function
  SDA_BpskDemodulate         - Demodulate a BPSK signal
  SDA_BpskDemodulateDebug    - Demodulate a BPSK signal, with debug output
  SIF_DpskModulate           - Initialise the DPSK modulation function
  SDA_DpskModulate           - DPSK modulate a signal
  SDA_DpskModulateByte       - DPSK modulate a signal - 8 bit byte input
  SIF_DpskDemodulate         - Initialise the DPSK demodulation function
  SDA_DpskDemodulate         - Demodulate a DPSK signal
  SDA_DpskDemodulateDebug    - Demodulate a DPSK signal, with debug output
  SIF_PiByFourDQpskModulate  - Initilize the PI/4 D-QPSK modulation function
  SDA_PiByFourDQpskModulate  - PI/4 D-QPSK modulate a signal

  SUF_AsyncCharacterLength   - Return the asynchronous character length for a given word length and number of start, stop and partiy bits
  SDA_SyncToAsyncConverter   - Convert a data sequence from synchronous to asynchronous
  SDA_AsyncToSyncConverter   - Convert a data sequence from asynchronous to synchronous
  SIF_AsyncAddRemoveStopBits - Initilize the function to remove stop bits from an asynchronous sequence
  SDA_AsyncRemoveStopBits    - Remove stop bits from an asynchronous sequence
  SDA_AsyncAddStopBits       - Add stop bits to an asynchronous sequence
  SDA_DecreaseWordLength     - Decrease the wordlength of a synchronous sequence
  SDA_IncreaseWordLength     - Increase the wordlength of a synchronous sequence

  SDS_Scrambler1417          - 1 + x-14 + x-17 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) scrambler
  SDS_Descrambler1417        - 1 + x-14 + x-17 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) descrambler
  SDS_Scrambler1417WithInversion - 1 + x-14 + x-17 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) scrambler - with inversion
  SDS_Descrambler1417WithInversion - 1 + x-14 + x-17 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) descrambler - with inversion
  SDS_Scrambler1823          - 1 + x-18 + x-23 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) scrambler
  SDS_Descrambler1823        - 1 + x-18 + x-23 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) descrambler
  SDS_Scrambler523           - 1 + x-5 + x-23 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) scrambler
  SDS_Descrambler523         - 1 + x-5 + x-23 polynomial Pseudo Random Binary Sequence (PRBS) Cyclic Redundancy Check (CRC) descrambler
  SDS_ScramblerDescramblerPN9  - PN-9 scrambler / descrambler
  SDS_ScramblerDescramblerPN15 - PN-15 scrambler / descrambler
  SDS_SequenceGeneratorPN9   - PN-9 scrambler / descrambler sequence generator
  SDS_SequenceGeneratorPN15  - PN-9 scrambler / descrambler sequence generator

  SDA_Mux_N                  - Multiplex N channels onto one carrier
  SDA_Demux_N                - Demultiplex N channels from one carrier
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Interpolation And Decimation Functions

  SIF_Decimate               - Initialise the decimation function
  SDA_Decimate               - Decimate the sample rate of the source data
  SIF_Interpolate            - Initialise the interpolation function
  SDA_Interpolate            - Interpolate the sample rate of the source data
  SIF_FilterAndDecimate      - Initialise the filter and decimation function
  SDA_FilterAndDecimate      - Filter and decimate the sample rate of the source data
  SIF_InterpolateAndFilter   - Initialise the interpolate and filter function
  SDA_InterpolateAndFilter   - Interpolate and filter sample rate of the source data
  SDA_ResampleLinear         - Linear re-sampler
  SDA_ResampleLinearNSamples - Linear re-sampler and output N samples
  SDA_InterpolateLinear1     - Linear interpolation version 1
  SDA_InterpolateLinear2     - Linear interpolation version 2
  SIF_ResampleSinc           - Initialize sin(x)/x (sinc) re-sampler
  SIF_ResampleWindowedSinc   - Initialize window'd sin(x)/x (sinc) re-sampler
  SDA_ResampleSinc           - sin(x)/x (sinc) re-sampler
  SDA_ResampleSincNSamples   - sin(x)/x (sinc) re-sampler and output N samples
  SIF_InterpolateSinc1       - Initialize sin(x)/x (sinc) interpolation
  SIF_InterpolateWindowedSinc1 - Initialize window'd sin(x)/x (sinc) interpolation
  SDA_InterpolateSinc1       - sin(x)/x (sinc) interpolation
  SIF_ResampleLinearContiguous - Initialize contiguous (over entire array) linear re-sampler
  SDA_ResampleLinearContiguous - Contiguous (over entire array) linear re-sampler
  SIF_ResampleSincContiguous - Initialize contiguous (over entire array) sin(x)/x (sinc) re-sampler
  SIF_ResampleWindowedSincContiguous - Initialize contiguous (over entire array) sin(x)/x (sinc) re-sampler
  SDA_ResampleSincContiguous - Contiguous (over entire array) sin(x)/x (sinc) re-sampler
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DTMF Generation And Detection Functions

  SIF_DtmfGenerate           - Initialise the DTMF generation function
  SDA_DtmfGenerate           - Generate the DTMF signals
  SIF_DtmfDetect             - Initialise the DTMF detection function
  SDA_DtmfDetect             - Detect the DTMF signals (uses Goertzel's algorithm)
  SDA_DtmfDetectAndValidate  - Detect the DTMF signal - as above but validates the output
  SUF_AsciiToKeyCode         - Convert ASCII key codes to keypad codes
  SUF_KeyCodeToAscii         - Convert keypad codes to ASCII
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Speech Processing Functions

  SIF_PreEmphasisFilter      - Initialise the pre-emphasis filter for the speech signal
  SDA_PreEmphasisFilter      - Apply the pre-emphasis filter to the speech signal
  SIF_DeEmphasisFilter       - Initialise the de-emphasis filter for the speech signal
  SDA_DeEmphasisFilter       - Apply the de-emphasis filter to the speech signal
  SDA_AdpcmEncoder           - Compress the speech using Adaptive Differential Pulse Coded Modulation (ADPCM)
  SDA_AdpcmEncoderDebug      - Compress the speech using Adaptive Differential Pulse Coded Modulation (ADPCM) - with debug output
  SDA_AdpcmDecoder           - Decompress the speech using Adaptive Differential Pulse Coded Modulation (ADPCM)
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Maths / Minimum and Maximum Functions

Minimum / Maximum Functions
  SDA_Max                    - Find the maximum value in a array
  SDA_AbsMax                 - Find the maximum of the absolute values in a array
  SDA_Min                    - Find the minimum value in a array
  SDA_AbsMin                 - Find the minimum of the absolute values in a array
  SDA_Middle                 - Find the middle value in a array
  SDA_MaxPos                 - Find the position of the maximum value in a array
  SDA_AbsMaxPos              - Find the position of the maximum of the absolute values in a array
  SDA_MinPos                 - Find the position of the minimum value in a array
  SDA_AbsMinPos              - Find the position of the minimum of the absolute values in a array
  SDS_Max                    - Return the maximum of 2 numbers
  SDS_AbsMax                 - Return the maximum of the absolute values of 2 numbers
  SDS_Min                    - Return the minimum of 2 numbers
  SDS_AbsMin                 - Return the minimum of 2 the absolute values of numbers
  SDA_LocalMax               - Detect the local maximum within an array
  SDA_LocalAbsMax            - Detect the local maximum within an array
  SDA_LocalMin               - Detect the local maximum within an array
  SDA_LocalAbsMin            - Detect the local maximum within an array
  SDA_PeakHold               - Calculate a per array peak hold
  SDA_PeakHoldPerSample      - Calculate a per sample peak hold
  SDA_DetectFirstPeakOverThreshold - Detect the first peak value over a threshold value
  SDS_Round                  - Round the sample to the nearest integer
  SDA_Round                  - Round the data to the nearest integer
  SDA_Clip                   - Clip a signal to an absolute maximum
  SDA_Threshold              - Threshold the data
  SDA_SoftThreshold          - Soft threshold the data
  SDA_ThresholdAndClamp      - Threshold the data and clamp the results
  SDA_TestOverThreshold      - Test if data magnitude is over threshold
  SDA_TestAbsOverThreshold   - Test if absolute value of data magnitude is over threshold
  SDA_Clamp                  - Clamp the data within limits
  SDA_SelectMax              - Select the maximum values from two arrays
  SDA_SelectMin              - Select the minimum values from two arrays
  SDA_SelectMagnitudeSquaredMax - Select the maximum magnitude squared values from two arrays
  SDA_SelectMagnitudeSquaredMin - Select the minimum magnitude squared values from two arrays
  SDA_SetMinValue            - Set the minimum value in the output
  SDA_PeakToAverageRatio     - Calculate the peak to average ratio of the signal
  SDA_MovePeakTowardsDeadband - Shift the data in an array towards a deadband

Math Functions
  SDA_Divide                 - Divide a vector array by a scalar
  SDA_Divide2                - Divide a vector array by another vector
  SDA_Multiply               - Multiply a vector array by a scalar
  SDA_Multiply2              - Multiply two vector arrays
  SDS_ComplexMultiply        - Multiply one complex vector by another
  SDS_ComplexInverse         - Invert a complex vector
  SDS_ComplexDivide          - Divide one complex vector by another
  SDA_ComplexScalarMultiply  - Multiply a complex vector array by a scalar
  SDA_ComplexMultiply2       - Multiply the complex vectors in an array by the complex vectors in another array
  SDA_ComplexScalarDivide    - Divide a complex vector array by a scalar
  SDA_ComplexDivide2         - Complex divide the elements in one array by the elements in another
  SDA_RealDotProduct         - Dot product of two real vectors
  SDA_ComplexDotProduct      - Dot product of two complex vectors
  SDA_ComplexScalarMultiply  - Multiply a complex vector array by a scalar
  SDA_Add_N                  - Add N arrays of data
  SDA_WeightedSum            - Weighted sum of two arrays of data
  SDA_Subtract2              - Subtract the contents of one array from another
  SDA_Offset                 - Offset a signal by a scalar amount
  SDA_PositiveOffset         - Offset the data to ensure that all the values are positive and the smallest value is zero
  SDA_NegativeOffset         - Offset the data to ensure that all the values are negative and the largest value is zero
  SDA_Negate                 - Negate all the entries in a array
  SDA_Inverse                - Return reciprocal of all the values in the array
  SDA_Square                 - Return the square of all the values in the array
  SDA_Sqrt                   - Return the square root of all the values in the array
  SDA_Difference             - Returns the difference (always positive) between the data in the two arrays
  SDA_SumOfDifferences       - Returns the sum of the differences (always positive) between the data in the two arrays
  SDS_Roots                  - Returns the real roots of the equation : ax^2 + bx + c = 0
  SDS_Factorial              - Returns the factorial of the real input value.
  SDS_Permutations           - Returns the number of permutations for a data set.
  SDS_Combinations           - Returns the number of combinations for a data set.
  SIF_OverlapAndAddLinear    - Initialise the linear overlap and add functions
  SDA_OverlapAndAddLinear    - Overlap the data in two arrays and add the overlapped data values
  SDA_OverlapAndAddLinearWithClip - Overlap the data in two arrays and add the overlapped data values - Clip the sum to avoid overflow
  SDA_OverlapAndAddArbitrary - Overlap the data in two arrays and add the overlapped data values - Adds an arbitrary scaling function to the overlapped data
  SDA_OverlapAndAddArbitraryWithClip - Overlap the data in two arrays and add the overlapped data values -
                                       Adds an arbitrary scaling function to the overlapped data and clip the sum to avoid overflow
  SDS_DegreesToRadians       - Convert a value from degrees to radians
  SDA_DegreesToRadians       - Convert an array of values from degrees to radians
  SDS_RadiansToDegrees       - Convert a value from radians to degrees
  SDA_RadiansToDegrees       - Convert an array of values from radians to degrees

DSP utility Functions

  SDA_Rotate                 - Rotate the data in a array by N samples
  SDA_Reverse                - Reverse the data in a array
  SDA_Scale                  - Scale an arrays contents to a maximum value
  SDA_MeanSquare             - Calculate the MS value of the data
  SDA_MeanSquareError        - Calculate the MS error value of the data
  SDA_RootMeanSquare         - Calculate RMS value of the data
  SDA_Magnitude              - Calculate RMS magnitude from complex arrays
  SDA_MagnitudeSquared       - Calculate mean squared magnitude from complex arrays
  SDS_Magnitude              - Calculate RMS magnitude from complex sample
  SDS_MagnitudeSquared       - Calculate mean squared magnitude from a single complex input
  SDS_Phase                  - Calculate phase from a complex sample
  SDA_Phase                  - Calculate phase from a complex array
  SDA_PhaseWrapped           - Return the wrapped phase of the signal around +/- PI
  SDA_PhaseUnwrapped         - Return the unwrapped of the signal
  SDA_MagnitudeAndPhaseWrapped - Return the magnitude and the phase wrapped of the signal
  SDA_MagnitudeAndPhaseUnWrapped - Return the magnitude and the phase unwrapped of the signal
  SDA_MagnitudeSquaredAndPhaseWrapped - Return the magnitude and the phase wrapped of the signal
  SDA_MagnitudeSquaredAndPhaseUnWrapped - Return the magnitude and the phase unwrapped of the signal
  SDA_PhaseWrap              - Wrap the phase of the signal around +/- PI
  SDA_PhaseUnwrap            - Unwrap the phase of the signal
  SDS_Log2                   - Return the logartitm to base 2
  SDA_Copy                   - Duplicate the contents of one array in another
  SDA_CopyWithStride         - Duplicate the contents with variable indexing
  SIF_CopyWithOverlap        - Initilize the function for copying two arrays to a third with some overlap of the input arrays
  SDA_CopyWithOverlap        - Copy two arrays to a third with some overlap of the input arrays
  SDA_RectangularToPolar     - Convert rectangular data to polar
  SDA_PolarToRectangular     - Convert polar data to rectangular
  SDA_20log10                - Calculate 20 * log base 10 of vector values
  SDA_10log10                - Calculate 10 * log base 10 of vector values
  SDA_LogMagnitude           - Calculate the log magnitude of the vector
  SDA_LogMagnitudeAndPhaseWrapped - Return the log magnitude and the phase wrapped of the signal
  SDA_LogMagnitudeAndPhaseUnWrapped - Return the log magnitude and the phase unwrapped of the signal
  SDA_Lengthen               - Zero pad a vector to another length
  SDA_Shorten                - Truncate a vector to a new length
  SIF_ReSize                 - Initialize the array resize function
  SDA_ReSize                 - Resize the array
  SDA_ReSizeInput            - Resize the input
  SDA_ReSizeOutput           - Resize the output
  SDA_Fill                   - Fill a array with a scalar value
  SDA_Clear                  - Clear the contents of a array to 0.0
  SDA_Histogram              - Produce a histogram of an arrays data
  SIF_Histogram              - Initilize the histogram function
  SDA_HistogramEqualize      - Equalize the histogram of the data
  SDA_Quantize               - Quantize the data to N bits
  SDA_Abs                    - Calculate the absolute values in an array
  SDS_PeakValueToBits        - Convert the number of bits in an integer to the peak value possible
  SDS_BitsToPeakValue        - For a given value, provide the number of bits required to represent it
  SDS_LinearTodBm            - Convert a linear value to dBm
  SDS_dBmToLinear            - Convert a dBm value to linear
  SDA_Compare                - Compare the contents of two arrays
  SDA_CompareComplex         - Compare the contents of two arrays of complex numbers

  SDA_RealSpectralInverse    - Spectrum inv. on real time domain data
  SDA_CmplxSpectralInverse   - Spectrum inv. on Complex time domain data
  SDA_FdInterpolate          - Interpolate a spectrum, to change pitch
  SDA_FdInterpolate2         - Interpolate a spectrum, to change pitch
  SDS_TdPitchShift           - Pitch shift a signal in the time domain - per sample
  SDA_TdPitchShift           - Pitch shift a signal in the time domain - array
  SDS_EchoGenerate           - Superimpose echo and reverb on a signal
  SDA_Power                  - Raise all the entries in a array to a power
  SDS_Polynomial             - Evaluate the polynomial on the sample
  SDA_Polynomial             - Evaluate the polynomial on the data
  SDS_Modulo                 - Rewrite the data as modulo N data
  SDA_Modulo                 - Rewrite the array of data as modulo N data
  SDA_AgcPeak                - Control the gain using the peak level
  SIF_AgcMeanAbs             - Initialize the AGC to control the gain using the mean absolute value
  SDA_AgcMeanAbs             - Control the gain using the mean absolute value
  SIF_AgcMeanSquared         - Initialize the AGC to control the gain using the mean squared value
  SDA_AgcMeanSquared         - Control the gain using the mean squared value
  SDA_GroupDelay             - Return the group delay of the phase signal
  SDA_ZeroCrossingDetect     - Find zero crossings in an array
  SDS_ZeroCrossingDetect     - Find zero crossings on a per sample basis
  SDA_FirstZeroCrossingPos   - Find the location of the first zero crossing in an array
  SDA_Trigger                - Oscilloscope style trigger function
  SDA_ClearLocation          - Set the value at a location to zero
  SDA_SetLocation            - Set the value at a location to the given value
  SDA_SortMinToMax           - Sort the values in a array - minimum first
  SDA_SortMaxToMin           - Sort the values in a array - maximum first
  SDS_CountOneBits           - Count the number of '1' bits in the data value
  SDS_CountZeroBits          - Count the number of '0' bits in the data value
  SDS_CountLeadingOneBits    - Count the number of leading '1' bits in the data value
  SDS_CountLeadingZeroBits   - Count the number of leading '0' bits in the data value
  SDA_Sign                   - Return the sign of all the samples in the array
  SDA_Swap                   - Swap the order of the data in the array
  SUF_ModuloIncrement        - Increment all of the values in the source array using modulo arithmatic
  SUF_ModuloDecrement        - Decrement all of the values in the source array using modulo arithmatic

  SDA_SigLibDataToFix        - Convert the data from SLData_t to native SigLib fixed point format
  SDA_FixToSigLibData        - Convert the data from native SigLib fixed point format to SLData_t
  SDA_SigLibDataToFix16      - Convert the data from SLData_t to 16 bit fixed point format
  SDA_Fix16ToSigLibData      - Convert the data from 16 bit fixed point format to SLData_t
  SDA_SigLibDataToFix32      - Convert the data from SLData_t to 32 bit fixed point format
  SDA_Fix32ToSigLibData      - Convert the data from 32 bit fixed point format to SLData_t

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Control Functions

  SDS_Pid                    - Apply a pid control loop
  SDA_Pwm                    - Pulse Width Modulation function
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Order Analysis Functions

  SDA_ExtractOrder           - Extract the orders in a data set
  SDA_SumLevel               - Sum the levels in a data set
  SDA_SumLevelWholeSpectrum  - Sum the levels over a whole spectrum
  SIF_OrderAnalysis          - Initialize the order analysis functions
  SDA_OrderAnalysis          - Perform order analysis
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Statistical Analysis Functions

Regression Analysis Functions

  SDA_LinraConstantCoeff     - Return lin. regression const. coeff.
  SDA_LinraRegressionCoeff   - Return lin. regression regress. coeff.
  SDA_LinraCorrelationCoeff  - Return lin. regression correlat. coeff.
  SDA_LinraEstimateX         - Return lin. regression X estimate
  SDA_LinraEstimateY         - Return lin. regression Y estimate
  SDA_LograConstantCoeff     - Return log. regression const. coeff.
  SDA_LograRegressionCoeff   - Return log. regression regress. coeff.
  SDA_LograCorrelationCoeff  - Return log. regression correlat. coeff.
  SDA_LograEstimateX         - Return log. regression X estimate
  SDA_LograEstimateY         - Return log. regression Y estimate
  SDA_ExpraConstantCoeff     - Return expon. regression const. coeff.
  SDA_ExpraRegressionCoeff   - Return expon. regression regress. coeff.
  SDA_ExpraCorrelationCoeff  - Return expon. regression correlat. coeff.
  SDA_ExpraEstimateX         - Return expon. regression X estimate
  SDA_ExpraEstimateY         - Return expon. regression Y estimate
  SDA_PowraConstantCoeff     - Return power regression const. coeff.
  SDA_PowraRegressionCoeff   - Return power regression regress. coeff.
  SDA_PowraCorrelationCoeff  - Return power regression correlat. coeff.
  SDA_PowraEstimateX         - Return power regression X estimate
  SDA_PowraEstimateY         - Return power regression Y estimate
  SDA_Detrend                - Detrend the data in the array
  SDA_ExtractTrend           - Extract the trend in the data
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Trigonometric Functions

  SDA_Sin                    - Return the sines of the data
  SDA_Cos                    - Return the cosines of the data
  SDA_Tan                    - Return the tangents of the data
  SIF_FastSin                - Initialise fast sine transform (look up table) function
  SDA_FastSin                - Perform fast sine (look up table) function on an array basis
  SDS_FastSin                - Perform fast sine (look up table) function on a per sample basis
  SIF_FastCos                - Initialise fast cosine transform (look up table) function
  SDA_FastCos                - Perform fast cosine (look up table) function on an array basis
  SDS_FastCos                - Perform fast cosine (look up table) function on a per sample basis
  SIF_FastSinCos             - Initialise fast sine and cosine transform (look up table) function
  SDA_FastSinCos             - Perform fast sine and cosine (look up table) function on an array basis
  SDS_FastSinCos             - Perform fast sine and cosine (look up table) function on a per sample basis
  SIF_FastTan                - Initialise fast tangent transform (look up table) function
  SDA_FastTan                - Perform fast tangent (look up table) function on an array basis
  SDS_FastTan                - Perform fast tangent (look up table) function on a per sample basis
  SIF_QuickSin               - Initialise quick sine transform (look up table) function
  SDA_QuickSin               - Perform quick sine (look up table) function on an array basis
  SDS_QuickSin               - Perform quick sine (look up table) function on a per sample basis
  SIF_QuickCos               - Initialise quick cosine transform (look up table) function
  SDA_QuickCos               - Perform quick cosine (look up table) function on an array basis
  SDS_QuickCos               - Perform quick cosine (look up table) function on a per sample basis
  SIF_QuickSinCos            - Initialise quick sine and cosine transform (look up table) function
  SDA_QuickSinCos            - Perform quick sine and cosine (look up table) function on an array basis
  SDS_QuickSinCos            - Perform quick sine and cosine (look up table) function on a per sample basis
  SIF_QuickTan               - Initialise quick tangent transform (look up table) function
  SDA_QuickTan               - Perform quick tangent (look up table) function on an array basis
  SDS_QuickTan               - Perform quick tangent (look up table) function on a per sample basis
  SDA_Sinc                   - Calculate sin(x)/x sinc function on an array
  SDS_Sinc                   - Calculate sin(x)/x sinc function on a per sample basis
  SIF_QuickSinc              - Initialize the function to calculate the quick sin(x)/x sinc (look up table) function
  SDA_QuickSinc              - Calculate the quick sin(x)/x sinc (look up table) function on an array
  SDS_QuickSinc              - Calculate the quick sin(x)/x sinc (look up table) function on a per sample basis
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Complex Vector Functions

  SCV_Real                   - Extract the real part of a complex vector
  SCV_Imaginary              - Extract the imaginary part of a complex vector
  SCV_Polar                  - Create a complex polar vector from real data
  SCV_Rectangular            - Create a complex rectangular vector from real data
  SCV_PolarToRectangular     - Convert polar data to rectangular
  SCV_RectangularToPolar     - Convert rectangular data to polar
  SCV_Sqrt                   - Square root a complex vector
  SCV_Inverse                - Invert a complex vector
  SCV_Conjugate              - Return the complex conjugate of a vector
  SCV_Magnitude              - Return the real absolute magnitude of vector
  SCV_MagnitudeSquared       - Return the square of the real absolute magnitude of vector
  SCV_Phase                  - Return the phase of vector
  SCV_Multiply               - Multiply two complex vectors
  SCV_Divide                 - Divide one complex vector by another
  SCV_Add                    - Add two complex vectors
  SCV_Subtract               - Return the difference between two vectors
  SCV_Log                    - Return log of a complex vector
  SCV_Exp                    - Return exponent of a complex vector
  SCV_Expj                   - Return the complex exponential of the real input (e^jTheta)
  SCV_Pow                    - Raise complex vector to a real power
  SCV_VectorAddScalar        - Add a scalar to a vector
  SCV_VectorSubtractScalar   - Subtract a scalar from a vector
  SCV_VectorMultiplyScalar   - Multiply a vector by a scalar
  SCV_VectorDivideScalar     - Divide a vector by a scalar
  SCV_ScalarSubtractVector   - Subtract a vector from a scalar
  SCV_Roots                  - Returns the complex roots of the equation : ax^2 + bx + c = 0

  SDA_CreateComplexRect      - Create a rectangular complex array (interleaved real and imaginary values)
  SDA_CreateComplexPolar     - Create a polar complex array (interleaved magnitude and phase values)
  SDA_ExtractComplexRect     - Separate a rectangular complex array (interleaved real and imaginary values)
  SDA_ExtractComplexPolar    - Separate a polar complex array (interleaved magnitude and phase values)
  SDA_ClearComplexRect       - Clear the contents of a rectangular complex array to 0+j0
  SDA_ClearComplexPolar      - Clear the contents of a polar complex array to 0+j0
  SDA_FillComplexRect        - Fill the contents of a rectangular complex array to a constant complex value
  SDA_FillComplexPolar       - Fill the contents of a polar complex array to a constant complex value
  SDA_ComplexRectangularToPolar - Convert complex rectangular numbers to polar
  SDA_ComplexPolarToRectangular - Convert complex polar numbers to rectangular
  SDA_RectangularToPolar     - Convert rectangular numbers to polar
  SDA_PolarToRectangular     - Convert polar numbers to rectangular
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Two Dimensional Matrix Functions

  SMX_Transpose              - Transpose a two dimensional matrix - also know as 'corner turn'
  SMX_Multiply               - Multiply two two dimensional matrices
  SMX_CreateIdentity         - Create an identity matrix
  SMX_Inverse2x2             - Invert a 2x2 matrix
  SMX_ComplexInverse2x2      - Invert a 2x2 matrix of complex numbers
  SMX_Inverse                - Invert a matrix, using Crout's LU reduction algorithm
  SMX_LuDecompose            - LU decompose a matrix
  SMX_LuSolve                - Solve for an LU decomposed matrix
  SMX_Determinant            - Calculate the determinant of a matrix
  SMX_LuDeterminant          - Calculate the determinant of an LU decomposed matrix
  SMX_RotateClockwise        - Rotate all of the matrix values in a clockwise direction
  SMX_RotateAntiClockwise    - Rotate all of the matrix values in an anti-clockwise direction
  SMX_Reflect                - Reflect the values in a matrix about a vertical axis
  SMX_Flip                   - Reflect the values in a matrix about a horizontal axis
  SMX_InsertRow              - Insert a row in a matrix
  SMX_ExtractRow             - Extract a row from a matrix
  SMX_InsertColumn           - Insert a column in a matrix
  SMX_ExtractColumn          - Extract a column from a matrix
  SMX_InsertNewRow           - Insert a new row into a matrix - shift the rows below the new one down one level
  SMX_DeleteOldRow           - Extract a row from a matrix - shift the rows below the extracted one up one level 
  SMX_InsertNewColumn        - Insert a new column into a matrix - shift the columns to the right of the new one to the right one level
  SMX_DeleteOldColumn        - Extract a column from a matrix - shift the columns to the right of the extracted one to the left one level
  SMX_InsertRegion           - Insert a region into a matrix
  SMX_ExtractRegion          - Extract a region from a matrix
  SMX_InsertDiagonal         - Insert a diagonal into a matrix
  SMX_ExtractDiagonal        - Extract a diagonal from a matrix
  SMX_SwapRows               - Swap two rows in a matrix
  SMX_SwapColumns            - Swap two columns in a matrix
  SMX_Sum                    - Add two matrices together
  SMX_Copy                   - Copy a two dimensional matrix
  SMX_Add                    - Add two two dimensional matrices
  SMX_Subtract               - Subtract one two D. matrix from another
  SMX_MultiplyPiecewise      - Piecewise multiply two two D. matrices
  SMX_ScalarMultiply         - Multiply a two D. matrix by a scalar
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Utility Macros And Functions

Utility Functions
  SUF_SiglibVersion         - Returns the current SigLib version number
  SUF_Debugfprintf          - Debug fprintf function - prints to a log file
  SUF_ClearDebugfprintf     - Clear the debug log file
  SUF_Debugvfprintf         - Varaible parameter version of SUF_Debugfprintf
  SUF_DebugPrintArray       - Print the contents of an array to the log file
  SUF_DebugPrintMatrix      - Print the contents of a matrix to the log file
  SUF_DebugPrintPolar       - Print the value of a polar complex number
  SUF_DebugPrintRectangular - Print the value of a rectangular complex number
  SUF_DebugPrintIIRCoefficients - Print the IIR filter coefficients array

C/C++ Macros
  SDS_Abs                   - Return the absolute value of a number
  SDS_Absolute              - Return the absolute value of a number
  SDS_Sign                  - Return the sign of a number
  SDS_Odd                   - Returns true if sample is odd
  SDS_Even                  - Returns true if sample is even
  SDS_PowerOfTwo            - Returns true if size is a power of 2
  SDS_BitTest               - Returns 1 if all bits in mask set, 0 otherwise
  SUF_NumberOfElements      - Returns number of samples in an array
  SDS_Swap                  - Swap the contents of 2 variables
  SDS_SortN                 - Sort the contents of N variables
  SDA_Operate               - Perform a standard math operation (+ - * / ) on vectors
  SDS_RoundDown             - Round the scalar value down to the nearest integer value
  SDS_RoundUp               - Round the scalar value up to the nearest integer value
  SDS_RoundToNearest        - Round the scalar value to the nearest integer value
  SAI_RoundDown             - Round the integer scalar value down to the nearest integer value
  SAI_RoundUp               - Round the integer scalar value up to the nearest integer value
  SAI_RoundToNearest        - Round the integer scalar value to the nearest integer value
  SAI_Odd                   - Return true if the integer value is odd
  SAI_Even                  - Return true if the integer value is even
  SAI_PowerOfTwo            - Return the integer value squared
  SAI_Absolute              - Return the absolute value of the integer
  SAI_Sign                  - Return the sign of the integer value
  SAI_Log2                  - Return the log base 2 of the integer value
  SUF_BinNumberToFrequency  - Convert the FFT bin number to a frequency
  SUF_BinNumberToFrequency2 - Convert the FFT bin number to a frequency - version 2
  SUF_FrequencyToBinNumber  - Convert a frequency to an FFT bin number
  SUF_FrequencyToBinNumber2 - Convert a frequency to an FFT bin number - version 2

Memory Allocation Functions
  SUF_VectorArrayAllocate       - Allocate vector array
  SUF_FftCoefficientAllocate    - Allocate FFT twiddle factor coefficient array
  SUF_IirState_arrayAllocate    - Allocate IIR filter state array
  SUF_IirCoefficientAllocate    - Allocate IIR filter coefficients  array
  SUF_QamCarrierArrayAllocate   - Allocate QAM carrier array
  SUF_QpskCarrierArrayAllocate  - Allocate QPSK carrier array
  SUF_IndexArrayAllocate        - Allocate index array
  SUF_ComplexRectArrayAllocate  - Allocate a rectangular complex vector array
  SUF_ComplexPolarArrayAllocate - Allocate a polar complex vector array

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Please note that some of the SigLib functionality (for example multi-rate polyphase filters) is not listed here because it is not implemented as a single function but is implemented using several different functions. Example programs that shows how to use the SigLib functions for these purposes are provided. The reason for this is that these operations are often inefficient to implement as a single generic function but may be configured from the examples to meet the requirements of each individual application.

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