search for: yopt

Before re-inventing the wheel I would like to ask: does anyone know about an optimizer in R which can reliably identify which value of X (Xopt) leads to Y (Yopt) closest to Ytarget in Y <- MonotoneStepFun(X) optionally with the restriction that Yopt <= Ytarget (at least if any Y <= Ytarget, otherwise any Yopt > Ytarget would be the preferred answer) If none is known, I will write one. Thank you -- Dr. Jens Oehlschl?gel Analyse BBDO InterO...

...g.h> + +#ifndef CELT_C +# define CELT_C +#endif +#include "celt_lpc.h" +#include "modes.h" + +#ifdef FIXED_POINT + +#define MAX_ORDER 32 + +static int test_fir(int arch) +{ + opus_val16 x[MAX_PERIOD+MAX_ORDER]; + opus_val16 num[MAX_ORDER]; + opus_val16 yorg[MAX_PERIOD], yopt[MAX_PERIOD]; + int N, ord; + unsigned int i; + + printf("%50s", "celt_fir() ..."); + for(ord=0;ord<=MAX_ORDER;ord++) + { + for(N=ord;N<=MAX_PERIOD;N++) /* N is larger than or equal to ord. */ + { + for (i=0;i<MAX_PERIOD+MAX_ORDER;++i) +...

Hi all, This is Linfeng Zhang from Google. I'll work on ARM NEON optimization in the next few months. I'm submitting 2 patches in the following couple of emails, which have the new created celt_fir_neon(). I revised celt_fir_c() to not pass in argument "mem" in Patch 1. If there are concerns to this change, please let me know. Many thanks to your comments. Linfeng Zhang

Hi all, I'm sending patch "Optimize silk_warped_autocorrelation_FIX() for ARM NEON" in an separate email. It is based on Tim’s aarch64v8 branch https://git.xiph.org/?p=users/tterribe/opus.git;a=shortlog;h=refs/heads/aarch64v8 Thanks for your comments. Linfeng

I rebased my previous 3 patches to the current master with minor changes. Patches 1 to 3 replace all my previous submitted patches. Patches 4 and 5 are new. Thanks, Linfeng Zhang