9 lines
348 B
Text
9 lines
348 B
Text
DOTPROD(A,B)
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;Returns the dot product of two vectors. Vectors are assumed to be stored as caret-delimited strings of numbers.
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;If the vectors are not of equal length, a null string is returned.
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QUIT:$LENGTH(A,"^")'=$LENGTH(B,"^") ""
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NEW I,SUM
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SET SUM=0
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FOR I=1:1:$LENGTH(A,"^") SET SUM=SUM+($PIECE(A,"^",I)*$PIECE(B,"^",I))
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KILL I
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QUIT SUM
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