1 /* IA-32 SSE version of peakval 2 * Copyright 2004 Phil Karn, KA9Q 3 */ 4 5 #include <stdlib.h> 6 #include "fec.h" 7 8 int peakval_sse_assist(signed short *,int); 9 10 int peakval_sse(signed short *b,int cnt){ 11 int peak = 0; 12 int a; 13 14 while(((int)b & 7) != 0 && cnt != 0){ 15 a = abs(*b); 16 if(a > peak) 17 peak = a; 18 b++; 19 cnt--; 20 } 21 a = peakval_sse_assist(b,cnt); 22 if(a > peak) 23 peak = a; 24 b += cnt & ~3; 25 cnt &= 3; 26 27 while(cnt != 0){ 28 a = abs(*b); 29 if(a > peak) 30 peak = a; 31 b++; 32 cnt--; 33 } 34 return peak; 35 } 36
