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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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