Optimizing: Fix long-to-fp conversion on x86. long-to-fp conversion implemented using SSE loses the precision. The test is included. CL uses FPU to provide the correct result. Change-Id: I8eaf3c46819a8cb52642a7e7d7c4e3e0edbc88db Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>