std:log() use in BufferOp.cpp breaks build on MSVC 7.1

[warmerdam]

        cl -Iheaders /MD /GR /O2 /W3 /nologo /D "NDEBUG"  /D "NOMINMAX" /D "WIN32_LEAN_AND_MEAN" /D "NOGDI"  /GX /c operation\buffer\BufferOp.cpp /Fooperation\buffer\BufferOp.obj
BufferOp.cpp
operation\buffer\BufferOp.cpp(72) : error C2039: 'log' : is not a member of 'std'
operation\buffer\BufferOp.cpp(72) : error C2039: 'log' : is not a member of 'std'
operation\buffer\BufferOp.cpp(75) : error C2039: 'pow' : is not a member of 'std'
NMAKE : fatal error U1077: 'cl' : return code '0x2'
Stop.

[warmerdam]

I have "fixed" this by adding a cmath include in r2171, but I'm not sure if this is exactly right. I'm adding mloskot to cc: list since it appears he changed this code to use the std:: prefix.

[mloskot]

Frank,

Yes, you are right I did it. Probably, when I was adding std:: prefix, <cmath> was included indirectly by some other headers, so it compiled. I was just about to fix it. I confirm your patch works perfectly. Thank you for fixing!

[(none)]

Milestone 3.0.1 deleted