From a31630e0d5b9880c716d9004ef4154396ba41ebc Mon Sep 17 00:00:00 2001 From: "Matthias P. Braendli" Date: Thu, 2 Jan 2014 21:55:13 +0100 Subject: Extract fec-3.0.1 --- peakval_sse2.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 peakval_sse2.c (limited to 'peakval_sse2.c') diff --git a/peakval_sse2.c b/peakval_sse2.c new file mode 100644 index 0000000..79d9059 --- /dev/null +++ b/peakval_sse2.c @@ -0,0 +1,34 @@ +/* Portable C version of peakval + * Copyright 2004 Phil Karn, KA9Q + */ +#include +#include "fec.h" + +int peakval_sse2_assist(signed short *,int); + +int peakval_sse2(signed short *b,int cnt){ + int peak = 0; + int a; + + while(((int)b & 15) != 0 && cnt != 0){ + a = abs(*b); + if(a > peak) + peak = a; + b++; + cnt--; + } + a = peakval_sse2_assist(b,cnt); + if(a > peak) + peak = a; + b += cnt & ~7; + cnt &= 7; + + while(cnt != 0){ + a = abs(*b); + if(a > peak) + peak = a; + b++; + cnt--; + } + return peak; +} -- cgit v1.2.3