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1 | function r = x(q) |
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2 | % X Extracts the x component of the vector part of a quaternion. |
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3 | |
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4 | % Copyright © 2005 Stephen J. Sangwine and Nicolas Le Bihan. |
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5 | % See the file : Copyright.m for further details. |
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6 | |
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7 | % error(nargchk(1, 1, nargin)), error(nargoutchk(0, 1, nargout)) |
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8 | |
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9 | % This function is written in terms of its private counterpart |
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10 | % so that the underlying representation of a quaternion is a |
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11 | % private aspect of the class. |
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12 | |
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13 | r = exe(q); |
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