Starting from C++11, several math functions, like isinf, moved into the std
namespace. Since cmath undefines those functions before redefining them inside
the namespace, and glibc 2.23 defines the C variants as macros, the C variants
in global namespace are not accessible any longer.
v2: Move the fix outside of Nouveau, as suggested by Jose Fonseca, since anyone
might need it when GCC switches to C++14 by default with GCC 6.0.
v3:
* Put the code directly inside c99_math.h rather than creating a new header
file, as asked by Jose Fonseca;
* Guard the code behind glibc version checks, as only glibc > =2.23 defines
isinf & co. as functions, as suggested by Jose Fonseca.
Signed-off-by: Pierre Moreau <pierre.morrow@free.fr>
Signed-off-by: Jose Fonseca <jfonseca@vmware.com>
The fpclassify stuff either needs std=c99 or _XOPEN_SOURCE=600 passed
to gcc, but when using the latter the lrint family of function will be defined
too.
MSVC 2013 declares these functions, both for C and C++ source files.
This was caught with MSVC in analyze mode.
Reviewed-by: Brian Paul <brianp@vmware.com>
MSVC 2008 (shipped with Windows SDK 7.0.7600) is the oldest we
need to support. At least on llvmpipe, gallium/auxiliary, and util
modules. For the remaining modules (particular all OpenGL specific
code) can be built with MSVC 2013.
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
The alternative would be to include math.h in c99_compat.h but that
seems heavy-handed.
This patch also replaces INLINE with inline in the c99 math function
wrappers.
Fixes MSVC build.
Acked-by: Matt Turner <mattst88@gmail.com>
Pierre Moreau
Jose Fonseca
Roland Scheidegger
Matt Turner
Brian Paul