Bug #2770 ยป matrix_det.diff
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#++
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#
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# Returns the determinant of the matrix. If the matrix is not square, the
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# result is 0. This method's algorithm is Gaussian elimination method
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# Returns the determinant of the matrix.
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# This method's algorithm is Gaussian elimination method
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# and using Numeric#quo(). Beware that using Float values, with their
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# usual lack of precision, can affect the value returned by this method. Use
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# Rational values or Matrix#det_e instead if this is important to you.
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| ... | ... | |
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# => 45.0
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#
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def determinant
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return 0 unless square?
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Matrix.Raise ErrDimensionMismatch unless square?
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size = row_size
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a = to_a
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| ... | ... | |
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alias det determinant
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#
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# Returns the determinant of the matrix. If the matrix is not square, the
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# result is 0. This method's algorithm is Gaussian elimination method.
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# Returns the determinant of the matrix.
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# This method's algorithm is Gaussian elimination method.
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# This method uses Euclidean algorithm. If all elements are integer,
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# really exact value. But, if an element is a float, can't return
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# exact value.
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| ... | ... | |
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# => 63
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#
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def determinant_e
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return 0 unless square?
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Matrix.Raise ErrDimensionMismatch unless square?
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size = row_size
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a = to_a
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