Explicitly use std::pow.

[0-wiz-0]

This fixes a build failure on SmartOS, see
https://us-central.manta.mnx.io/pkgsrc/public/reports/upstream-trunk/20230514.2249/libheif-1.16.1/build.log

/home/pbulk/build/graphics/libheif/work/libheif-1.16.1/libheif/hevc.cc: In function 'double read_depth_rep_info_element(BitReader&)':
/home/pbulk/build/graphics/libheif/work/libheif-1.16.1/libheif/hevc.cc:46:16: error: call of overloaded 'pow(int, int)' is ambiguous
   46 |     value = pow(2, exponent - 31) * (1.0 + mantissa / pow(2, mantissa_len));
      |             ~~~^~~~~~~~~~~~~~~~~~

[farindk]

Your compiler output looks like the actual problem is that it cannot decide between pow(float, int) and pow(double, int).
Hence, a better fix could be to replace the pow(2, ...) with pow(2.0, ...).

Can you please try if that works?

[0-wiz-0]

Yes, that works too. I've adapted the diff. Thanks for the suggestion!

[farindk]

There is another pow() in the first of the two lines. Why doesn't the compiler complain about that one?
I guess this should also get a 2.0.

[0-wiz-0]

Yeah, sorry for that.
I'm reporting this for another party that provided the fix and okayed your alternative solution, and I created the new patch and missed the third pow; this went unnoticed because I don't have access to the system.
New version pushed.

[farindk]

Thank you.