On Sun, Jul 31, 2016 at 12:44:27PM +0200, Danny Milosavljevic wrote: > > Apparently the "std::" is missing in front of "isnan"; should this not be > > implicit? > No. Many people in the C++ community frowns upon even doing "using namespace > std" at all, never mind implicitly. > http://stackoverflow.com/questions/1265039/using-std-namespace > If you include math.h , isnan is called ::isnan . > If you include cmath , isnan is called std::isnan .
Thanks for the info! > Also, std::isnan was added with C++11, so it's a new feature. Are you > compiling with a C++11 compiler? What are the compiler flags used? I am just looking at the reports on hydra. Dealii compiles in master, but not in core-updates. (I am trying to update to 8.4.1; so far, the build process goes beyond where it fails in the current version.) Andreas
