From: Peter Meerwald <p.meerwald@bct-electronic.com>
Date: Mon, 9 Jan 2012 12:51:27 +0000 (+0100)
Subject: sconv: Fix generation of floats in SSE test code
X-Git-Tag: submit/2.0-panda/20130828.192557~209
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c6e6d682ed480c8c792f490e78d4bfff66bf53b7;p=profile%2Fivi%2Fpulseaudio-panda.git

sconv: Fix generation of floats in SSE test code

the random floats x should be zero-mean with -(1+eps)<x<(1+eps) for some
small epsilon; previously only negative x were generated
---

diff --git a/src/pulsecore/sconv_sse.c b/src/pulsecore/sconv_sse.c
index 22aaf6c..3c9a809 100644
--- a/src/pulsecore/sconv_sse.c
+++ b/src/pulsecore/sconv_sse.c
@@ -182,7 +182,7 @@ static void run_test(void) {
     memset(samples, 0, sizeof(samples));
 
     for (i = 0; i < SAMPLES; i++) {
-        floats[i] = (rand()/(RAND_MAX+2.2)) - 1.1;
+        floats[i] = 2.1f * (rand()/(float) RAND_MAX - 0.5f);
     }
 
     func = pa_get_convert_from_float32ne_function(PA_SAMPLE_S16LE);