[#BA81C12459B08646E23FCC315229F4B1945197C7]
Return the case-insensitive comparison of s0 and s1
int ci_compare( core::string_view s0, core::string_view s1) noexcept;
This returns the lexicographical comparison of two strings, ignoring case. The function is defined only for strings containing low-ASCII characters.
assert( ci_compare( "boost", "Boost" ) == 0 );
Throws nothing.