_isinf
_isnan
_atof
_strtod
_acos
_asin
_atan
_atan2
_ceil
_cosh
_fabs
_floor
_fmod
_log10
_sinh
_sqrt
_tanh
_printf
_fprintf
_sprintf
_vprintf
_vsprintf
_vfprintf
_scanf
_fscanf
_sscanf
_vscanf
_vsscanf
_vfscanf