sintabr.q15

来自「开发平台ccs5000 tms320vc5416的fft程序」· Q15 代码 · 共 27 行

;***********************************************************
; Version 2.20.01                                           
;***********************************************************
;*****************************************************************************
;  Filename:	 sintabqr.q15
;  Description:  twiddle table to include for RFFT
;
;  Copyright Texas instruments Inc, 1998
;-----------------------------------------------------------------------------
;  Description: a separate sine table is provided for each stage to increase
;		FFT speed. This is at the expense of an increased Data Memory
;		size.
;		Format: a 1/4-cycle sine values followed by a 1/2-cycle cosine
;		values for a total of (3/4 * FFTSIZE -1) values
;-----------------------------------------------------------------------------
; Revision History:
;
; 0.00	M. Christ/M. Chishtie. Original code
; 1.00Beta  R. Piedra. 8/31/98, Modified to adapt to real FFT requiremnts
;
;*****************************************************************************
		.sect	".sintab"
		.label _tablesine
TWIDSTRT
     .if ((N>8) | (NREAL=16))
; STAGE 4
sin4 .word 030fch     ;   22.500