A Block Floating Point Implementation on the TMS320C54x DSP

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SPRA610 A.5 Test.c //*******************************************************************/ /* Filename: test.c // Version: 0.01 // Description: test r against rtest (array of n elements) // Returns eflag //––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– // Revision History: // 0.01, R. Piedra, 06/15/98, – Original release //*******************************************************************/ #include “tms320.h” short test(DATA *r, DATA *rtest, short n, DATA maxerror) { short i; short eflag = PASS; /* error flag or index into r vector where error */ DATA elevel = 0; /* error level at failing eflag index location */ DATA emax = 0; /* max error level detected across when NOERROR */ for (i=0;i maxerror) { eflag =i; /* if error ––> eflag = index and emax= max error */ emax = elevel; /* if no error ––> eflag = –1 and emax = max error */ break; } else if (elevel>emax) emax = elevel; } /* Pass to Host: eflag and emax */ return(eflag); } 36 A <strong>Block</strong> <strong>Floating</strong> <strong>Point</strong> <strong>Implementation</strong> on the TMS320C54x DSP
SPRA610 A.6 Dsplib.h #ifndef _DSPLIB #define _DSPLIB #include “tms320.h” /* fft */ short cfft8 (DATA *x, DATA scale); short cfft16 (DATA *x, DATA scale); short cfft32 (DATA *x, DATA scale); short cfft64 (DATA *x, DATA scale); short cfft128 (DATA *x, DATA scale); short cfft256 (DATA *x, DATA scale); short cfft512 (DATA *x, DATA scale); short cfft1024 (DATA *x, DATA scale); short rfft16 (DATA *x, DATA scale); short rfft32 (DATA *x, DATA scale); short rfft64 (DATA *x, DATA scale); short rfft128 (DATA *x, DATA scale); short rfft256 (DATA *x, DATA scale); short rfft512 (DATA *x, DATA scale); short rfft1024 (DATA *x, DATA scale); /* ifft */ short cifft8 (DATA *x, DATA scale); short cifft16 (DATA *x, DATA scale); short cifft32 (DATA *x, DATA scale); short cifft64 (DATA *x, DATA scale); short cifft128 (DATA *x, DATA scale); short cifft256 (DATA *x, DATA scale); short cifft512 (DATA *x, DATA scale); short cifft1024 (DATA *x, DATA scale); short rifft16 (DATA *x, DATA scale); short rifft32 (DATA *x, DATA scale); short rifft64 (DATA *x, DATA scale); short rifft128 (DATA *x, DATA scale); short rifft256 (DATA *x, DATA scale); short rifft512 (DATA *x, DATA scale); short rifft1024 (DATA *x, DATA scale); short cbrev (DATA *x, DATA *y, ushort n); /* correlations */ short acorr_raw (DATA *x, DATA *r, ushort nx, ushort nr); short acorr_bias(DATA *x, DATA *r, ushort nx, ushort nr); short acorr_unbias(DATA *x, DATA *r, ushort nx, ushort nr); short corr_raw (DATA *x, DATA *y, DATA *r, ushort nx, ushort ny); short corr_bias (DATA *x, DATA *y, DATA *r, ushort nx, ushort ny); A <strong>Block</strong> <strong>Floating</strong> <strong>Point</strong> <strong>Implementation</strong> on the TMS320C54x DSP 37
Page 1 and 2: Application Report SPRA610 - Decemb
Page 3 and 4: SPRA610 1 Fixed- and Floati
Page 5 and 6: SPRA610 3 The Block</strong
Page 7 and 8: SPRA610 5 Implementing the
Page 9 and 10: SPRA610 Table 1. Summary of Results
Page 11 and 12: SPRA610 Appendix A Source code for
Page 13 and 14: SPRA610 stl a,*sp(DATA) ; DATA = *S
Page 15 and 16: SPRA610 ld #cmprval_2, b max a ; lo
Page 17 and 18: SPRA610 ***************************
Page 19 and 20: SPRA610 .asg ar4, AR_TABLE ;-------
Page 21 and 22: SPRA610 ; Return ;-------- end_lab;
Page 23 and 24: SPRA610 ; Off-place bit-reversing ;
Page 25 and 26: SPRA610 A.3 Macros.asm ;***********
Page 27 and 28: SPRA610 ld *ar5,16,B ; B=R3-R4 sth
Page 29 and 30: SPRA610 STM STM xc 1,ANEQ ld #-1,AS
Page 31 and 32: SPRA610 ADD *P,16,A,B ; B := (PI+QR
Page 33 and 34: SPRA610 mar .endm *+ar3(idx) ;*****
Page 35: SPRA610 A.4 Cfft_t.c //************
Page 39 and 40: SPRA610 short minval (DATA *x, usho
Page 41 and 42: SPRA610 A.8 Test.h /* Test for cfft
Page 43 and 44: SPRA610 0,0, /* 31 */ -1,-1, /* 32
Page 45 and 46: SPRA610 .word 018f9h ; 168.750 ø .
Page 47 and 48: SPRA610 .word 05ed7h ; 132.188 ø .
Page 49 and 50: SPRA610 .word 07e9dh ; 81.562 ø .w
Page 51 and 52: SPRA610 .word 09592h ; 236.250 ø .
Page 53 and 54: SPRA610 .word 06cf9h ; 58.359 ø .w
Page 55 and 56: SPRA610 .word 05964h .word 05843h .
Page 57 and 58: SPRA610 .word 0ba33h .word 0b8e3h .
Page 59 and 60: SPRA610 .word 012c8h ; 8.438 ø .wo
Page 61 and 62: SPRA610 .word 05dc8h ; 47.109 ø .w
Page 63 and 64: SPRA610 .word 07fa7h ; 85.781 ø .w
Page 65 and 66: SPRA610 .word 0698ch .word 0691ah .
Page 67 and 68: SPRA610 .word 02528h .word 02467h .
Page 69 and 70: SPRA610 .word 0d079h .word 0cfbeh .
Page 71 and 72: SPRA610 .word 090a1h .word 0903eh .
Page 73 and 74: A.10 Cfft.cmd /********************

A Block Floating Point Implementation on the TMS320C54x DSP

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