count_bits.h

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/* -*- c++ -*- */
/*
 * Copyright 2003,2013 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */
 
#ifndef _GR_COUNT_BITS_H_
#define _GR_COUNT_BITS_H_
 
#include <gnuradio/blocks/api.h>
 
#include <cstdint>
 
namespace gr {
namespace blocks {
 
//! return number of set bits in the low  8 bits of x
BLOCKS_API unsigned int count_bits8(unsigned int x);
 
//! return number of set bits in the low 16 bits of x
BLOCKS_API unsigned int count_bits16(unsigned int x);
 
//! return number of set bits in the low 32 bits of x
BLOCKS_API unsigned int count_bits32(unsigned int x);
 
//! return number of set bits in a 64-bit word
BLOCKS_API unsigned int count_bits64(uint64_t x);
 
} /* namespace blocks */
} /* namespace gr */
 
#endif /* _GR_COUNT_BITS_H_ */