# Complex numbers not in fundamental class?

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Mohammed Hamaidi on 21 Mar 2022
Answered: Walter Roberson on 21 Mar 2022
Hi Community
Since a complex number is 1x1 array, why isn't in fundamental class type of datas?

Walter Roberson on 21 Mar 2022
Observe
format long g
t = complex(single(3), single(-5)), whos t
t = single
3 - 5i
Name Size Bytes Class Attributes t 1x1 8 single complex
t = complex(double(3), double(-5)), whos t
t =
3 - 5i
Name Size Bytes Class Attributes t 1x1 16 double complex
t = complex(int8(3), int8(-5)), whos t
t = int8
3 - 5i
Name Size Bytes Class Attributes t 1x1 2 int8 complex
t = complex(uint64(3), uint64(5))
t = uint64
3 + 5i
Complex is an attribute, not a class. If you made it a class, you would need a separate class for each different datatype that can be complex -- single, double, int8, uint8, int16, uint16, int32, uint32, int64, uint64. (Complex logical and complex char get converted to double precision.)
Meanwhile you would still need isnumeric() and issingle() and isdouble() and isinteger() to continue to work on the values. What would your inheritence hierarchy be?

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