Allow user code to be compiled with "-mhard-float" for armeabi-v7a
(which implies -mfloat-abi=hard), and either link with
1. Android native APIs which use softfp, or
2. A customized libm_hard.a which is compiled with -mhard-float. Need
-D_NDK_MATH_NO_SOFTFP=1
See tests/device/hard-float/jni/Android.mk for details and restriction
on Clang
Change-Id: I773a842c73368e08b9a6cda0441e95a96fa303b2
This change removes the declaration of functions that are not
implemented by our various versions of our C library.
The corresponding declarations are moved inside #if 0 .. #endif
blocks (so it becomes easy to remember that they are missing)
Also refresh the headers a little (i.e. adding a few missing decl
and macros, remove C++ comments, etc)
See http://code.google.com/p/android/issues/detail?id=7807
Change-Id: I4ae1b1f3a181419eee2004c41b54768cc15e896f
NOTE: The missing decl are still there but encased in #if 0 .. #endif
blocks (to make it easier to implement them later). There are
a few exceptions in order to build STLport and libstdc++-v3
properly.
