Description Usage Arguments Value Examples
This function estimates the solution to an equation of the form x * b = y where x is a matrix, b is an unknown vector, and y is a known vector. It does much calculation on a GPU. If the y argument is omitted, the function returns the inverse of x.
The function uses R's base 'qr' and then applies the gpu to the result to get the final solution.
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x |
a matrix of floating point numbers. |
y |
a vector of floating point numbers of length nrow(x). |
a vector or matrix of floating point numbers. If y is not null, then the value is an estimate of the vector b of length ncol(x) where x * b = y. If y is null or omitted, the value is a matrix, an estimate of a matrix multiplicative pseudo inverse of x.
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