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38 lines
800 B
Plaintext
38 lines
800 B
Plaintext
NAME
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cp - cross product of two 3 element vectors
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SYNOPSIS
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cp(x, y)
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TYPES
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x, y 1-dimensional matrices with 3 elements
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return 1-dimensional matrix with 3 elements
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DESCRIPTION
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Calculate the product of two 3 1-dimensional matrices.
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If x has elements (x0, x1, x2), and y has elements (y0, y1, y2),
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cp(x,y) returns the matrix of type [0:2] with elements:
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{x1 * y2 - x2 * y1, x3 * y1 - x1 * y3, x1 * y2 - x2 * y1}
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EXAMPLE
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> mat x[3] = {2,3,4}
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> mat y[3] = {3,4,5}
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> print cp(x,y)
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mat [3] (3 elements, 3 nonzero):
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[0] = -1
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[1] = 2
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[2] = -1
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LIMITS
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The components of the matrices are to be of types for which the
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required algebraic operations have been defined.
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LIBRARY
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MATRIX *matcross(MATRIX *x, MATRIX *y)
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SEE ALSO
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dp
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