math: extend non-glibc guard to Clang and add exp10 guard#1400

mr-c merged 1 commit intosimd-everywhere:mastersimd-everywhere/simde:masterfrom

kjg0724:fix/roundeven-exp10-clang-non-glibckjg0724/simde:fix/roundeven-exp10-clang-non-glibcCopy head branch name to clipboard