From 61f2f0214c5999ea42a368a4fc99f03d8eb28d1e Mon Sep 17 00:00:00 2001 From: jcorgan Date: Mon, 8 Sep 2008 01:00:12 +0000 Subject: Merged r9433:9527 from features/gr-usrp2 into trunk. Adds usrp2 and gr-usrp2 top-level components. Trunk passes distcheck with mb-gcc installed, but currently not without them. The key issue is that when mb-gcc is not installed, the build system skips over the usrp2/firmware directory, and the firmware include files don't get put into the dist tarball. But we can't do the usual DIST_SUBDIRS method as the firmware is a subpackage. git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9528 221aa14e-8319-0410-a670-987f0aec2ac5 --- sdr_lib/round.v | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 sdr_lib/round.v (limited to 'sdr_lib/round.v') diff --git a/sdr_lib/round.v b/sdr_lib/round.v new file mode 100644 index 000000000..bff088831 --- /dev/null +++ b/sdr_lib/round.v @@ -0,0 +1,33 @@ +// -*- verilog -*- +// +// USRP - Universal Software Radio Peripheral +// +// Copyright (C) 2007 Matt Ettus +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 51 Franklin Street, Boston, MA 02110-1301 USA +// + +// Rounding "macro" +// Keeps the topmost bits, does proper 2s comp rounding - round to zero + +module round + #(parameter bits_in=0, + parameter bits_out=0) + (input [bits_in-1:0] in, + output [bits_out-1:0] out); + + assign out = in[bits_in-1:bits_in-bits_out] + (in[bits_in-1] & |in[bits_in-bits_out-1:0]); + +endmodule // round -- cgit v1.2.3