diff options
| author | Andrej Rode <mail@andrejro.de> | 2018-03-19 23:33:03 +0100 |
|---|---|---|
| committer | Marcus Müller <marcus.mueller@ettus.com> | 2018-03-30 16:51:31 +0200 |
| commit | 26ca54a29ad74ca3612db7433a855f4fd41f7d61 (patch) | |
| tree | 3ee575b442936be1c721e08aa3dc038f7f5e7b7a /gnuradio-runtime/lib/math/random.cc | |
| parent | 57a92af4e9f4b5eba42a00749b0936d06a2779b4 (diff) | |
analog: improve readability of laplacian distribution
Diffstat (limited to 'gnuradio-runtime/lib/math/random.cc')
| -rw-r--r-- | gnuradio-runtime/lib/math/random.cc | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gnuradio-runtime/lib/math/random.cc b/gnuradio-runtime/lib/math/random.cc index af90a33429..cedaf4b97f 100644 --- a/gnuradio-runtime/lib/math/random.cc +++ b/gnuradio-runtime/lib/math/random.cc @@ -141,11 +141,12 @@ namespace gr { float random::laplacian() { - float z = ran1()-0.5; - if(z>0) return -logf(1-2*z); - else return logf(1+2*z); + float z = ran1(); + if (z > 0.5f){ + return -logf(2.0f * (1.0f - z) ); + } + return logf(2 * z); } - /* * Copied from The KC7WW / OH2BNS Channel Simulator * FIXME Need to check how good this is at some point |