324118378e
This fixes a linker error for older ARM cores without 64-bit atomics. I think the { dg-add-options libatomic } is no longer needed, but it's harmless to keep it there. libstdc++-v3/ChangeLog: * testsuite/29_atomics/atomic_float/value_init.cc: Use float instead of double so that __atomic_load_8 isn't needed.