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39 lines
654 B
Plaintext
39 lines
654 B
Plaintext
NAME
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dp - dot product of two vectors
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SYNOPSIS
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dp(x, y)
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TYPES
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x, y 1-dimensional matrices with the same number of elements
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return depends on the nature of the elements of x and y
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DESCRIPTION
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Compute the dot product of two 1-dimensional matrices.
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Let:
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x = {x0, x1, ... xn}
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y = {y0, y1, ... yn}
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Then dp(x,y) returns the result of the calculation:
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x0*y0 + x1*y1 + ... + xn*yn
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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 dp(x,y)
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38
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LIMITS
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x and y are 1-dimensional matrices
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x and y have the same number of elements
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LIBRARY
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VALUE matdot(MATRIX *x, MATRIX *y)
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SEE ALSO
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cp
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