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71 lines
1.8 KiB
71 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0-only
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/**
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* Digital Voice Modem - Hotspot Firmware
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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 / Hotspot Firmware
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* @derivedfrom MMDVM_HS (https://github.com/g4klx/MMDVM_HS)
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* @license GPLv2 License (https://opensource.org/licenses/GPL-2.0)
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*
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* Copyright (C) 2015,2020 Jonathan Naylor, G4KLX
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* Copyright (C) 2017 Andy Uribe, CA6JAU
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*
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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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