While this change is correct, GNU libstdc++ 4.9 isn't able to handle a
standard compliant C library. Its <cmath> will `#undef isnan` from
math.h and only adds the function overloads to the std namespace,
making it impossible to use both <cmath> (which gets included by a
lot of other standard headers) and ::isnan.
We're going to have to revert this until we can start turning down
support for gnustl.
This reverts commit e76ee993ff.
Bug: https://code.google.com/p/android/issues/detail?id=271629
Test: make checkbuild
Change-Id: I394f50271430e78ab801d85c3ee4e87019eda6af
isnan was a function in POSIX in 1997, but changed to a macro only in 2004
to align with the C standard. isinf wasn't in POSIX until 2004, where it
appeared as a macro only (but other C libraries already had it as a
function).
Now the C++ standard has added ::isnan and ::isinf functions with different
signatures from the historical ones, so we need to move our historical cruft
out of the way.
We'll keep the implementations for backwards compatibility.
Bug: http://b/34724220
Test: ran tests
Change-Id: Id665f0344af6fe6ed245106e60231f4ef2027f41
These names were pretty misleading (aka "backwards"), so switch to the
same obvious names glibc uses.
Test: build.
Change-Id: Ia98c9dbbccd0820386116562347654e84669034a
libstdc++ needs to be able to `using ::foo` these in the various C++
wrapper headers for the C library. The NDK long ago added fake
definitions. We need to keep the same.
Test: make checkbuild
Bug: http://b/30465923
Change-Id: Id513b72a59eafcc823080631e07b21290d5e3b24
Just expose the ones that bionic historically leaked.
Also, many of the M_* constants in <math.h> are actually POSIX.
Change-Id: I6275df84c5866b872b71f1c8ed14e2aada12b793
Some functions were added at different times on different platforms.
This should hopefully get most of them.
Bug: http://b/28178111
Change-Id: I85fdf92779a2f3277e9b537c6bfc7216790c607a
These inline definitions appear to be a workaround for a compiler bug
that either never existed, or has been resolved since then.
Bug: http://b/28067717
Change-Id: Ic1cd0f26403f234a6ab1fa273a9dd23e7f9fee8f
