strtod(1.2345wowzah) = (1.234500, wowzah)
strtod(53) = (53.000000, )
strtod(-254352.5...) = (-254352.500000, ...)
strtod(   19.2 wat) = (19.200000,  wat)
strtod(365.24 29.53) = (365.240000,  29.53)
strtod( 29.53) = (29.530000, )