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In the following speed table, smaller numbers are better. The numbers are median single-core cycle counts on various microarchitectures. Overclocking is disabled. The table reports cycle counts from lib25519 and, for comparison, OpenSSL and s2n-bignum. For comparability to OpenSSL's speed-testing utility, the OpenSSL cycle counts omit various OpenSSL overheads; see below for details. The s2n-bignum and lib25519 cycle counts include all overheads. There is also a lib25519+s2n line showing separate measurements of lib25519 after an optional pre-configuration `./use-s2n-bignum` step (which is a supported option for lib25519); a lib25519+exp line showing separate measurements of lib25519 after an experimental pre-configuration `mv skipcompilers/* compilers` step (which is unsupported: it uses instructions not supported by `valgrind`); and a lib25519+s2n+exp line.