"TMS320C55x DSP Library DSPLIB Programmer's Reference"

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IndexFFFTforward complex (cfft) 4-15forward real, in-place (rfft) 4-85inverse complex (cifft) 4-21inverse real, in-place (rifft) 4-87fir 4-34FIR filter 4-34block filter, fast (fir2) 4-37complex (cfir) 4-17decimating (firdec) 4-40direct form (fir) 4-34Hilbert Transformer 4-50interpolating (firinterp) 4-42lattice forward (firlat) 4-44symmetric (firs) 4-46FIR Hilbert Transformer 4-50fir2 4-37firdec 4-40firinterp 4-42firlat 4-44firs 4-46floating-point to Q15 conversion 4-49fltoq15 4-49forward complex FFT 4-15forward real FFT (in-place) 4-85Hhilb16 4-50IIIR filtercascaded, direct form I (iircas51) 4-59cascaded, direct form II (iircas4) 4-56cascaded, direct form II (iircas5) 4-58double-precision (iir32) 4-53lattice inverse (iirlat) 4-61iir32 4-53iircas4 4-56iircas5 4-58iircas51 4-59iirlat 4-61index and value of maximum element of avector 4-71index and value of minimum element of avector 4-73index of maximum element of a vector 4-69index of maximum element of a vector less than orequal to 34 4-70index of minimum element of a vector 4-72interpolating FIR filter 4-42inverse complex FFT 4-21inverse real FFT (in-place) 4-87Llattice forward (FIR) filter 4-44lattice inverse (IIR) filter 4-61ldiv16 4-63log_10 4-64log_2 4-66logarithmbase 10 (log_10) 4-64base 2 (log_2) 4-66base e (logn) 4-67logn 4-67Mmatrix multiplication 4-74matrix transpose 4-76maxidx 4-69maxidx34 4-70maximum element of a vectorindex (maxidx) 4-69index and value (maxvec) 4-71maximum element of a vector less than or equal to34, index (maxidx34) 4-70maximum value of a vector 4-70maxval 4-70maxvec 4-71minidx 4-72minimum element of a vectorindex (minidx) 4-72index and value (minvec) 4-73minimum value of a vector 4-73minval 4-73minvec 4-73Index-2
Indexmmul 4-74mtrans 4-76mul32 4-76Nnatural logarithm (logn) 4-67neg 4-77neg32 4-78Ppower 4-79QQ15 to floating-point conversion 4-80q15tofl 4-80Rrand16 4-81rand16init 4-83random number generationalgorithm 4-81initialization 4-83recip16 4-84rfft 4-85rifft 4-87Ssine 4-88sqrt_16 4-89square root of a 16-bit number 4-89sub 4-90symmetric FIR filter 4-46Vvector add 4-9vector negate 4-77vector negate, double-precision 4-78vector power 4-79vector subtract 4-90Index-3
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TMS320C55x DSP LibraryProgrammer’
Page 3 and 4:
PrefaceRead This FirstAbout This Ma
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Contentsatan16 . . . . . . . . . .
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DSP Routines1.1 DSP RoutinesThe TI
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DSPLIB Content / How to Install DSP
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Chapter 3Using DSPLIBThis chapter d
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Calling a DSPLIB Function from C3.2
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Calling a DSPLIB Function from Asse
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How DSPLIB Deals with Overflow and
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Chapter 4Function DescriptionsThis
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DSPLIB Functions4.2 DSPLIB Function
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DSPLIB FunctionsTable 4-2. Summary
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acorracorrFunctionArgumentsAutocorr
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addCycles †Code size(in bytes)Aub
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atan16Description This function cal
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expbexpFunctionBlock Exponent Imple
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cfftBenchmarks(preliminary)Cycles
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cfirCFFT - NOSCALEFFT Size Cycles
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cfirImplementation Notes The first
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cifftcifftFunctionInverse Complex F
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convolCIFFT - NOSCALEFFT Size Cycle
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convol1Figure 4-6. h Array in Memor
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convol2Figure 4-8. r Array in Memor
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convol2Figure 4-10. x Array in Memo
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dlmsImplementation NotesSpecial deb
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expnImplementation NotesDelayed ver
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firr[nx]Pointer to output vector of
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fir2Figure 4-14. x Array in Memoryo
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fir2Special Requirementsnh must be
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firdecr[nx/D]dbuffer[nh+1]nxnhDofla
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firinterpIoflagInterpolation factor
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firlatpbuffer [nh]nxnhoflagDelay bu
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firsnh2oflagHalf the number of coef
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fltoq15Figure 4-21. r Array in Memo
Page 71 and 72: hilb16dbuffer[nh + 2] Pointer to de
Page 73 and 74: iir32Figure 4-23. x Array in Memory
Page 75 and 76: iir32In the case of multiple-buffer
Page 77 and 78: iircas4nxoflagNumber of elements of
Page 79 and 80: iircas51This function retains the a
Page 81 and 82: iirlatBenchmarks(preliminary)Cycles
Page 83 and 84: ldiv16ldiv16Function32-bit by 16-bi
Page 85 and 86: log_10Special Requirements noneImpl
Page 87 and 88: lognThe coefficients Bi used in the
Page 89 and 90: maxidxmaxidxFunctionIndex of the Ma
Page 91 and 92: maxvecDescription Returns the maxim
Page 93 and 94: minvecminvalFunctionMinimum Value o
Page 95 and 96: mmulDescriptionAlgorithmThis functi
Page 97 and 98: negr[nx]Pointer to output data vect
Page 99 and 100: powernxoflagNumber of elements of i
Page 101 and 102: and16AlgorithmNot applicableOverflo
Page 103 and 104: and16initBenchmarksCycles Core: 13
Page 105 and 106: fftThe initial estimate can be obta
Page 107 and 108: ifftrifftFunctionInverse Real FFT (
Page 109 and 110: sqrt_16DescriptionComputes the sine
Page 111 and 112: subr[nx]nxscaleoflagPointer to outp
Page 113 and 114: What DSPLIB Benchmarks are Provided
Page 115 and 116: DSPLIB Software Updates6.1 DSPLIB S
Page 117 and 118: Q3.12 Format / Q.15 Format / Q.31 F
Page 119 and 120: Calculating the Reciprocal of a Q15
Page 121: IndexIndex16-bit reciprocal functio
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