Calculate Keypad

The keypad is used to enter operators into the expression being formed. The following table describes the meaning of each key on the pad.

Key	Genstat Expression	Mathematical expression	Notes	Description
	C = A + B	c_i = a_i + b_i		Element-wise addition
	C = A − B	c_i = a_i − b_i		Element-wise subtraction
	C = A * B	c_i = a_i × b_i	1	Element-wise multiplication
	C = A / B	c_i = a_i / b_i		Element-wise division
	C = A .AND. B	c_i = a_i ∧ b_i	2,3	Element-wise AND operation
	C = A .OR. B	c_i = a_i ∨ b_i	2,4	Element-wise OR operation
	C = A .EQS. B	c_i = 1.0 if a_i = b_i c_i = 0.0 if a_i ≠ b_i	5	Element-wise string equality
	C = A .NES. B	c_i = 0.0 if a_i = b_i c_i = 1.0 if a_i ≠ b_i	5	Element-wise string inequality
	C = A ** B	c_i = a_i^b_i		Element-wise exponentiation
	C = A *+ B	C = AB	6	Matrix product
	(	(		Left bracket. Used to control order of evaluation. Can be nested as many times as required
	)	)		Right bracket.
	C = A == B	c_i = 1.0 if a_i = b_i c_i = 0.0 if a_i ≠ b_i		Element-wise test of equality. Can also be typed in as .EQ.
	C = A /= B	c_i = 1.0 if a_i ≠ b_i c_i = 0.0 if a_i = b_i		Element-wise test of inequality. Can also be typed in as .NE.
	C = A < B	c_i = 1.0 if a_i < b_i c_i = 0.0 if a_i ≥ b_i		Element-wise less than. Can also be typed in as .LT.
	C = A <= B	c_i = 1.0 if a_i ≤ b_i c_i = 0.0 if a_i > b_i		Element-wise less than or equal to. Can also be typed in as .LE.
	C = A > B	c_i = 1.0 if a_i > b_i c_i = 0.0 if a_i ≤ b_i		Element-wise greater than. Can also be typed in as .GT.
	C = A >= B	c_i = 1.0 if a_i ≥ b_i c_i = 0.0 if a_i < b_i		Element-wise greater than or equal to. Can also be typed in as .GE.
	C = A .IN. B	c_i = 1.0 if a_i ∈ B c_i = 0.0 if a_i ∉ b_i	7	Element-wise test of set inclusion
	C = A .NI. B	c_i = 1.0 if a_i ∈ B c_i = 0.0 if a_i ∉ b_i	7	Element-wise test of set non-inclusion
	B = NOT(A)	b_i = ¬ a_i		Element-wise logical negation (NOT).
	C = A .IS. B		8,9	Logical test of equivalence of identifiers. In the calculation C=A.IS.B the result C is 1 if A and B are identifiers of the same data structure, after any necessary substitutions (for example if B is a dummy in a FOR loop). The result is 0 if the identifiers are different.
	C = A .ISNT. B		8,9	Logical test of non-equivalence of identifiers
	C = A .EOR. B			Element-wise exclusive OR operation

Notes

For matrices, c_ij = a_ij × b_ij; for matrix multiplication see *+
Zero is treated as FALSE as non-zero as TRUE. Logical TRUE and FALSE results are set to 1.0 and 0.0 respectively
If either a_i or b_i is missing-value, the result is set to missing
If one of a_i or b_i is missing-value, the result is set to the non-missing value; if both are missing, the result is missing
Both operands A and B must be text; the result is a variate
Operands must be matrices, symmetric matrices, or diagonal matrices of conformable dimensions
Operands may be text or numerical
Operator with scalar result
Operands may be of different sizes

Updated on May 3, 2019

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