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-rw-r--r--gr-digital/lib/digital_impl_glfsr.cc67
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diff --git a/gr-digital/lib/digital_impl_glfsr.cc b/gr-digital/lib/digital_impl_glfsr.cc
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-/* -*- c++ -*- */
-/*
- * Copyright 2007,2012 Free Software Foundation, Inc.
- *
- * This file is part of GNU Radio
- *
- * GNU Radio 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 3, or (at your option)
- * any later version.
- *
- * GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street,
- * Boston, MA 02110-1301, USA.
- */
-
-#include <digital_impl_glfsr.h>
-#include <stdexcept>
-
-static int s_polynomial_masks[] = {
- 0x00000000,
- 0x00000001, // x^1 + 1
- 0x00000003, // x^2 + x^1 + 1
- 0x00000005, // x^3 + x^1 + 1
- 0x00000009, // x^4 + x^1 + 1
- 0x00000012, // x^5 + x^2 + 1
- 0x00000021, // x^6 + x^1 + 1
- 0x00000041, // x^7 + x^1 + 1
- 0x0000008E, // x^8 + x^4 + x^3 + x^2 + 1
- 0x00000108, // x^9 + x^4 + 1
- 0x00000204, // x^10 + x^4 + 1
- 0x00000402, // x^11 + x^2 + 1
- 0x00000829, // x^12 + x^6 + x^4 + x^1 + 1
- 0x0000100D, // x^13 + x^4 + x^3 + x^1 + 1
- 0x00002015, // x^14 + x^5 + x^3 + x^1 + 1
- 0x00004001, // x^15 + x^1 + 1
- 0x00008016, // x^16 + x^5 + x^3 + x^2 + 1
- 0x00010004, // x^17 + x^3 + 1
- 0x00020013, // x^18 + x^5 + x^2 + x^1 + 1
- 0x00040013, // x^19 + x^5 + x^2 + x^1 + 1
- 0x00080004, // x^20 + x^3 + 1
- 0x00100002, // x^21 + x^2 + 1
- 0x00200001, // x^22 + x^1 + 1
- 0x00400010, // x^23 + x^5 + 1
- 0x0080000D, // x^24 + x^4 + x^3 + x^1 + 1
- 0x01000004, // x^25 + x^3 + 1
- 0x02000023, // x^26 + x^6 + x^2 + x^1 + 1
- 0x04000013, // x^27 + x^5 + x^2 + x^1 + 1
- 0x08000004, // x^28 + x^3 + 1
- 0x10000002, // x^29 + x^2 + 1
- 0x20000029, // x^30 + x^4 + x^1 + 1
- 0x40000004, // x^31 + x^3 + 1
- 0x80000057 // x^32 + x^7 + x^5 + x^3 + x^2 + x^1 + 1
-};
-
-int digital_impl_glfsr::glfsr_mask(int degree)
-{
- if (degree < 1 || degree > 32)
- throw std::runtime_error("digital_impl_glfsr::glfsr_mask(): degree must be between 1 and 32 inclusive");
- return s_polynomial_masks[degree];
-}