David B Raleigh c1b8673652 remove std from copysignf and copysign
"copysign* is C99/C++ TR1, apparently still not in std namespace with
gcc 4.7. Remove std:: in front of it and see if it helps. If you
provide a patch, we'll test and include it for future releases."
2013-01-12 15:32:23 +01:00
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