Update Test (EXPECT_EQ and friends) to accept __uint128_t and floating point...

Update Test (EXPECT_EQ and friends) to accept __uint128_t and floating point types (float, double, long double).

Summary: Update Test (EXPECT_EQ and friends) to accept __uint128_t and floating point types (float, double, long double).

Reviewers: sivachandra

Subscribers: mgorny, libc-commits

Tags: #libc-project

Differential Revision: https://reviews.llvm.org/D83931