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87 lines
2.5 KiB
87 lines
2.5 KiB
/**
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* Digital Voice Modem - DSP Firmware (Hotspot)
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* GPLv2 Open Source. Use is subject to license terms.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* @package DVM / DSP Firmware (Hotspot)
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*
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*/
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//
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// Based on code from the MMDVM_HS project. (https://github.com/juribeparada/MMDVM_HS)
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// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
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//
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/*
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* Copyright (C) 2015,2020 by Jonathan Naylor G4KLX
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* Copyright (C) 2017 by Andy Uribe CA6JAU
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "Utils.h"
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// ---------------------------------------------------------------------------
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// Constants/Macros
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// ---------------------------------------------------------------------------
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const uint8_t BITS_TABLE[] = {
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# define B2(n) n, n+1, n+1, n+2
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# define B4(n) B2(n), B2(n+1), B2(n+1), B2(n+2)
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# define B6(n) B4(n), B4(n+1), B4(n+1), B4(n+2)
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B6(0), B6(1), B6(1), B6(2)
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};
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// ---------------------------------------------------------------------------
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// Global Functions
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// ---------------------------------------------------------------------------
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uint8_t countBits8(uint8_t bits)
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{
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return BITS_TABLE[bits];
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}
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uint8_t countBits16(uint16_t bits)
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{
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uint8_t* p = (uint8_t*)&bits;
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uint8_t n = 0U;
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n += BITS_TABLE[p[0U]];
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n += BITS_TABLE[p[1U]];
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return n;
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}
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uint8_t countBits32(uint32_t bits)
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{
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uint8_t* p = (uint8_t*)&bits;
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uint8_t n = 0U;
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n += BITS_TABLE[p[0U]];
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n += BITS_TABLE[p[1U]];
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n += BITS_TABLE[p[2U]];
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n += BITS_TABLE[p[3U]];
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return n;
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}
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uint8_t countBits64(uint64_t bits)
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{
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uint8_t* p = (uint8_t*)&bits;
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uint8_t n = 0U;
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n += BITS_TABLE[p[0U]];
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n += BITS_TABLE[p[1U]];
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n += BITS_TABLE[p[2U]];
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n += BITS_TABLE[p[3U]];
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n += BITS_TABLE[p[4U]];
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n += BITS_TABLE[p[5U]];
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n += BITS_TABLE[p[6U]];
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n += BITS_TABLE[p[7U]];
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return n;
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}
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