cls(1234567) = 10
cls(-9999) = 17
clsll(1234567) = 42
clsll(-9999) = 49
fmadd(3.141590, 2.718000, 1.414000) = 9.952842
fmsub(3.141590, 2.718000, 1.414000) = -7.124842
fnmadd(3.141590, 2.718000, 1.414000) = -9.952842
fnmsub(3.141590, 2.718000, 1.414000) = 7.124842