c++: Fix multiple definition and cast 39/20539/1
authorLoïc Collignon <loic.collignon@iot.bzh>
Fri, 4 Jan 2019 14:49:18 +0000 (15:49 +0100)
committerLoïc Collignon <loic.collignon@iot.bzh>
Mon, 11 Mar 2019 12:40:28 +0000 (13:40 +0100)
The function was defined as many time as the header was included.
Making it a weak function fix the issue.
Also, a plain old C cast is required to make this constexpr valid.

Change-Id: I278f376e00ec6728272df4fde8ca8984195dd533
Signed-off-by: Loïc Collignon <loic.collignon@iot.bzh>

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