1_feclearexcept 2_fedisableexcept 3_feenableexcept 4_fegetenv 5_fegetexcept 6_fegetexceptflag 7_fegetround 8_feholdexcept 9_feraiseexcept 10_fesetenv 11_fesetexceptflag 12_fesetround 13_fetestexcept 14_feupdateenv 15feclearexcept 16fedisableexcept 17feenableexcept 18fegetenv 19fegetexcept 20fegetexceptflag 21fegetround 22feholdexcept 23feraiseexcept 24fesetenv 25fesetexceptflag 26fesetround 27fetestexcept 28feupdateenv 29