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409acbc3c9
Co-authored-by: mndza <diego.hdmp@gmail.com> Co-authored-by: Martin Ling <martin-git@earth.li> Co-authored-by: Antoine van Gelder <antoine@greatscottgadgets.com>
18 lines
560 B
Python
18 lines
560 B
Python
#
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# This file is part of HackRF.
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#
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# Copyright (c) 2025 Great Scott Gadgets <info@greatscottgadgets.com>
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# SPDX-License-Identifier: BSD-3-Clause
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def convergent_round(value, discarded_bits):
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retained = value[discarded_bits:]
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discarded = value[:discarded_bits]
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msb_discarded = discarded[-1]
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rest_discarded = discarded[:-1]
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lsb_retained = retained[0]
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# Round up:
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# - If discarded > 0.5
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# - If discarded == 0.5 and retained is odd
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round_up = msb_discarded & (rest_discarded.any() | lsb_retained)
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return retained + round_up
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