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Texas Instruments TMS320C64X - page 35

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DSP_autocor_rA8

4-7 C64x+ DSPLIB Reference

Benchmarks Cycles nx<40: 6*nr+ 20

nx>=40: nx*nr/8 + 2*nr + 20

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Contents

Main Copyright 2006, Texas Instruments Incorporated Preface Read This First About This Manual Notational Conventions Related Documentation From Texas Instruments Trademarks Contents Page Tables Page Page 1.1 Introduction to the TI C64x+ DSPLIB Page 1.2 Features and Benefits Page 2.1 How to Install DSPLIB 2.2 Using DSPLIB 2.2.1 DSPLIB Arguments and Data Types Table 21. DSPLIB Data Types 2.2.2 Calling a DSPLIB Function From C 2.2.3 Calling a DSP Function From Assembly 2.2.4 DSPLIB Testing Allowable Error 2.2.5 DSPLIB Overflow and Scaling Issues 2.2.6 Interrupt Behavior of DSPLIB Functions 2.3 How to Rebuild DSPLIB Page DSPLIB Function Tables Chapter 3 Topic Page 3.1 Arguments and Conventions Used Table 31. Argument Conventions 3.2 DSPLIB Functions 3.3 DSPLIB Function Tables Table 32. Adaptive Filtering Table 33. Correlation Table 34. FFT Table 34. FFT (Continued) Table 35. Filtering and Convolution Table 35. Filtering and Convolution (Continued) Table 36. Math Table 37. Matrix Table 38. Miscellaneous Table 39. Obsolete Functions 3.4 Differences Between the C64x and C64x+ DSPLIBs Table 310. Functions Optimized in the C64x+ DSPLIB Page Table 310. Functions Optimized in the C64x+ DSPLIB (Continued) Any functions which were not optimized for the C64x+ have the same performance as on the C64x. DSPLIB Reference Chapter 4 Topic Page 4.1 Adaptive Filtering LMS FIR Page 4.2 Correlation AutoCorrelation Page DSP_autocor_rA8 AutoCorrelation DSP_autocor_rA8 Page 4.3 FFT Complex Forward Mixed Radix 16 x 16-bit FFT Page Page Complex Forward Mixed Radix 16 x 16-bit FFT, With Im/Re Order Page Page Complex Forward Mixed Radix 16 x 16-bit FFT With Rounding Page Page Page Page Page Page Page Page Page Complex Forward Mixed Radix 16 x 32-bit FFT With Rounding Page Complex Forward Mixed Radix 32 x 32-bit FFT With Rounding Page Complex Forward Mixed Radix 32 x 32-bit FFT With Scaling Page Complex Inverse Mixed Radix 16 x 16-bit FFT With Rounding Page Complex Inverse Mixed Radix 16 x 16-bit FFT With Im/Re Order Page Complex Inverse Mixed Radix 16 x 32-bit FFT With Rounding Page Complex Inverse Mixed Radix 32 x 32-bit FFT With Rounding Page 4.4 Filtering and Convolution Page Complex FIR Filter Page Page Page FIR Filter Page FIR Filter (when the number of coefficients is a multiple of 4) Page FIR Filter (when the number of coefficients is a multiple of 8) Page FIR Filter (the number of coefficients is a multiple of 8) Page Symmetric FIR Filter Page IIR With 5 Coefficients Page All-Pole IIR Lattice Filter Page 4.5 Math Vector Dot Product and Square Page Vector Dot Product Page DSP_maxval Maximum Value of Vector DSP_maxval Index of Maximum Element of Vector Page DSP_minval Minimum Value of Vector DSP_minval 32-Bit Vector Multiply Page DSP_neg32 32-Bit Vector Negate DSP_neg32 16-Bit Reciprocal Page DSP_vecsumsq Sum of Squares DSP_vecsumsq DSP_w_vec Weighted Vector Sum DSP_w_vec 4.6 Matrix Matrix Multiplication Page DSP_mat_trans Matrix Transpose DSP_mat_trans DSP_bexp 4.7 Miscellaneous Block Exponent Implementation DSP_bexp Page Endian-Swap a Block of 16-Bit Values Page Endian-Swap a Block of 32-Bit Values Page Endian-Swap a Block of 64-Bit Values Page DSP_blk_move Block Move (Overlapping) DSP_blk_move Float to Q15 Conversion Page Minimum Energy Error Search Page DSP_q15tofl Q15 to Float Conversion DSP_q15tofl 4.8 Obsolete Functions 4.8.1 FFT Complex Bit-Reverse Page Page Complex Forward FFT (radix 2) Page Complex Forward FFT (radix 4) Page Page Complex Forward FFT With Digital Reversal Page Page Page Page Page Page Page Page Complex Forward Mixed Radix 16- x 16-Bit FFT With Truncation Page Page Page Page Page Page Page Page Page Page Page Page Page Performance/Fractional Q Formats A.1 Performance Considerations A.2 Fractional Q Formats A.2.1 Q3.12 Format Table A1.Q3.12 Bit Fields A.2.2 Q.15 Format Table A2.Q.15 Bit Fields Page Page Page Appendix A Appendix C Glossary A B C D Page E F G H I L M N O P R S T W Page Index A B C D Page E F G H I L Q R S T U

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