>> str2double('123.45e7')
ans =
  1.2345e+009
>> str2double('123 + 45i')
ans =
  1.2300e+002 +4.5000e+001i
>> str2double('3.14159')
ans =
    3.1416
>> str2double('2.7i - 3.14')
ans =
  -3.1400 + 2.7000i
>> str2double({'2.71' '3.1415'})
ans =
    2.7100    3.1415
>> str2double('1,200.34')
ans =
  1.2003e+003
>>
