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Copyright 2026 gaojiangjie <gaojiangjie@live.com>
Copyright 2001-2023 Xiph.Org, Skype Limited, Octasic,
Jean-Marc Valin, Timothy B. Terriberry,
CSIRO, Gregory Maxwell, Mark Borgerding,
Erik de Castro Lopo, Mozilla, Amazon
Copyright 2013 Koen Vos
Copyright 2014-2020 Cisco Systems, Inc.
Copyright 2014-2015 Vidyo
Copyright 2017, 2021 Google Inc.
Copyright 2018 David Rowe
Copyright 2024 Arm Limited
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The function cos_fdlibm in src/pvq.rs is translated from fdlibm
(FreeBSD msun k_cos.c, k_sin.c and e_rem_pio2.c). k_cos.c and k_sin.c
carry this notice:
====================================================
Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
Developed at SunSoft, a Sun Microsystems, Inc. business.
Permission to use, copy, modify, and distribute this
software is freely granted, provided that this notice
is preserved.
====================================================
e_rem_pio2.c carries this one:
====================================================
Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
Developed at SunPro, a Sun Microsystems, Inc. business.
Permission to use, copy, modify, and distribute this
software is freely granted, provided that this notice
is preserved.
====================================================
Opus is subject to the royalty-free patent licenses which are
specified at:
Xiph.Org Foundation:
https://datatracker.ietf.org/ipr/1524/
Microsoft Corporation:
https://datatracker.ietf.org/ipr/1914/
Broadcom Corporation:
https://datatracker.ietf.org/ipr/1526/