On systems where sizeof(long) == sizeof(int) the current tests failed. This commit updates those tests to work on all systems. std::abs has specific long specializations which can be used instead. llvm-svn: 369437
On some systems char is unsigned. If that is the case, we will now test signed char twice in std::abs. NFC. Fixes the build bots. llvm-svn: 369413
Implement LWG Issue 2735 by adding std::abs tests for several types and checking their return value. NFC. llvm-svn: 369394
Zoe Carver