mpv/mp3lib/dct36_k7.c

35 lines
1.2 KiB
C

/*
* dct36_k7.c - 3DNowEx(DSP)! optimized dct36()
*
* This code based 'dct36_3dnow.s' by Syuuhei Kashiyama
* <squash@mb.kcom.ne.jp>, only two types of changes have been made:
*
* - added new opcode PSWAPD
* - removed PREFETCH instruction for speedup
* - changed function name for support 3DNowEx! automatic detection
*
* note: because K7 processors are an aggresive out-of-order three-way
* superscalar ones instruction order is not significand for them.
*
* You can find Kashiyama's original 3dnow! support patch
* (for mpg123-0.59o) at
* http://user.ecc.u-tokyo.ac.jp/~g810370/linux-simd/ (Japanese).
*
* by KIMURA Takuhiro <kim@hannah.ipc.miyakyo-u.ac.jp> - until 31.Mar.1999
* <kim@comtec.co.jp> - after 1.Apr.1999
*
* Original disclaimer:
* The author of this program disclaim whole expressed or implied
* warranties with regard to this program, and in no event shall the
* author of this program liable to whatever resulted from the use of
* this program. Use it at your own risk.
*
* Modified by Nick Kurshev <nickols_k@mail.ru>
*
* 2003/06/21: Moved to GCC inline assembly - Alex Beregszaszi
*/
#define __DCT36_OPTIMIZE_FOR_K7
#include "dct36_3dnow.c"