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[37] | 1 | function q = complex(a,b) |
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| 2 | % COMPLEX Construct a complex quaternion from real quaternions. |
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| 3 | % (Quaternion overloading of standard Matlab function.) |
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| 4 | |
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| 5 | % Copyright © 2006 Stephen J. Sangwine and Nicolas Le Bihan. |
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| 6 | % See the file : Copyright.m for further details. |
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| 7 | |
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| 8 | error(nargchk(2, 2, nargin)), error(nargoutchk(0, 1, nargout)) |
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| 9 | |
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| 10 | if ~isreal(a) | ~isreal(b) |
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| 11 | error('Arguments must be real.') |
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| 12 | end |
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| 13 | |
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| 14 | q = a + b .* complex(0,1); |
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| 15 | |
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| 16 | % Implementation note: we use complex(0,1) and not i, because |
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| 17 | % it is possible to create a variable named i which hides the |
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| 18 | % built-in Matlab function of the same name. |
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