/* ======================================================================== */
/* TEXAS INSTRUMENTS, INC. */
/* */
/* DSPLIB DSP Signal Processing Library */
/* */
/* Release: Version 1.02 */
/* CVS Revision: 1.4 Sat Mar 9 05:04:15 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. */
/* ======================================================================== */
/* ======================================================================== */
/* NAME */
/* DSP_blk_eswap32 -- Endian-swap a block of 32-bit values */
/* */
/* REVISION DATE */
/* 10-Aug-2001 */
/* */
/* USAGE */
/* This routine has the following C prototype: */
/* */
/* void DSP_blk_eswap32 */
/* ( */
/* void *restrict src, // Source data // */
/* void *restrict dst, // Destination array // */
/* int n_words // Number of words to swap // */
/* ); */
/* */
/* This function performs an endian-swap on the data in the "src" */
/* array, writing the results to "dst". If NULL is passed in for */
/* the destination, then the endian-swap is performed in-place. */
/* The "n_words" argument gives the total length of the array. */
/* */
/* DESCRIPTION */
/* The data in the "src" array is endian swapped, meaning that the */
/* byte-order of the bytes within each word of the src[] array is */
/* reversed. This is meant to facilitate moving big-endian data */
/* to a little-endian system or vice-versa. */
/* */
/* When the "dst" pointer is non-NULL, the endian-swap occurs */
/* out-of-place, similar to a block move. When the "dst" pointer */
/* is NULL, the endian-swap occurs in-place, allowing the swap to */
/* occur without using any additional storage. */
/* */
/* ASSUMPTIONS */
/* Input and output arrays do not overlap, except in the very */
/* specific case that "dst == NULL" so that the operation occurs */
/* in-place. */
/* */
/* The input array and output array are expected to be word */
/* aligned, and a multiple of 2 words must be processed. */
/* */
/* The input array must be at least 4 words long. */
/* */
/* NOTES */
/* This function locks out interrupts for its entire duration. */
/* It is interrupt tolerant, but not interruptible. */
/* */
/* CODESIZE */
/* 224 bytes */
/* */
/* CYCLES */
/* cycles = 20 + 1.5 * n_words */
/* */
/* ------------------------------------------------------------------------ */
/* Copyright (c) 2002 Texas Instruments, Incorporated. */
/* All Rights Reserved. */
/* ======================================================================== */
#ifndef DSP_BLK_ESWAP32_H_
#define DSP_BLK_ESWAP32_H_ 1
void DSP_blk_eswap32
(
void *restrict src, /* Source data */
void *restrict dst, /* Destination array */
int n_words /* Number of words to swap */
);
#endif
/* ======================================================================== */
/* End of file: dsp_blk_eswap32.h */
/* ------------------------------------------------------------------------ */
/* Copyright (c) 2002 Texas Instruments, Incorporated. */
/* All Rights Reserved. */
/* ======================================================================== */