;* ======================================================================== *;
;* TEXAS INSTRUMENTS, INC. *;
;* *;
;* DSPLIB DSP Signal Processing Library *;
;* *;
;* Release: Version 1.02 *;
;* CVS Revision: 1.4 Fri Mar 29 20:00:04 2002 (UTC) *;
;* Snapshot date: 18-Apr-2002 *;
;* *;
;* This library contains proprietary intellectual property of Texas *;
;* Instruments, Inc. The library and its source code are protected by *;
;* various copyrights, and portions may also be protected by patents or *;
;* other legal protections. *;
;* *;
;* This software is licensed for use with Texas Instruments TMS320 *;
;* family DSPs. This license was provided to you prior to installing *;
;* the software. You may review this license by consulting the file *;
;* TI_license.PDF which accompanies the files in this library. *;
;* ------------------------------------------------------------------------ *;
;* Copyright (C) 2002 Texas Instruments, Incorporated. *;
;* All Rights Reserved. *;
;* ======================================================================== *;
* ========================================================================= *
* *
* TEXAS INSTRUMENTS, INC. *
* *
* NAME *
* DSP_vecsumsq *
* *
* REVISION DATE *
* 13-Aug-1999 *
* *
* USAGE *
* This routine is C callable, and has the following C prototype: *
* *
* int DSP_vecsumsq *
* ( *
* const short *x, /* Pointer to vector */ *
* int nx /* Length of vector. */ *
* ) *
* *
* This routine returns the sum of squares as its return value. *
* *
* DESCRIPTION *
* The "DSP_vecsumsq" function returns the sum of squares of the *
* elements contained in vector "x". *
* *
* C CODE *
* The following C code is a general implementation without *
* restrictions. This implementation may have restrictions, as *
* noted under "ASSUMPTIONS" below. *
* *
* int DSP_vecsumsq *
* ( *
* const short *x, /* Pointer to vector */ *
* int nx /* Length of vector. */ *
* ) *
* { *
* int i, sum = 0; *
* *
* for (i = 0; i < nx; i++) *
* sum += x[i] * x[i]; *
* *
* return sum; *
* } *
* *
* *
* ASSUMPTIONS *
* The input length is a multiple of 2 and at least 8. *
* *
* NOTES *
* This function is interrupt tolerant, but not interruptible. *
* It locks out interrupts for its entire duration. *
* *
* MEMORY NOTE *
* This function is ENDIAN NEUTRAL. *
* No bank conflicts occur under any conditions. *
* *
* CYCLES *
* cycles = count/2 + 19. *
* *
* CODESIZE *
* 192 bytes *
* *
* ------------------------------------------------------------------------- *
* Copyright (c) 2002 Texas Instruments, Incorporated. *
* All Rights Reserved. *
* ========================================================================= *
.global _DSP_vecsumsq
* ========================================================================= *
* End of file: dsp_vecsumsq.h62 *
* ------------------------------------------------------------------------- *
* Copyright (c) 2002 Texas Instruments, Incorporated. *
* All Rights Reserved. *
* ========================================================================= *