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Task/Random-numbers/Visual-FoxPro/random-numbers.visual

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+LOCAL i As Integer, m As Double, n As Integer, sd As Double
+py = PI()
+SET TALK OFF
+SET DECIMALS TO 6
+CREATE CURSOR gdev (deviate B(6))
+RAND(-1)
+n = 1000
+m = 1
+sd = 0.5
+CLEAR
+FOR i = 1 TO n
+	INSERT INTO gdev VALUES (GaussDev(m, 1/sd))
+ENDFOR
+CALCULATE AVG(deviate), STD(deviate) TO m, sd
+? "Mean", m, "Std Dev", sd
+SET TALK ON
+SET DECIMALS TO
+
+FUNCTION GaussDev(mean As Double, sdev As Double) As Double
+LOCAL z As Double
+z = SQRT(-2*LOG(RAND()))*COS(py*RAND())
+IF sdev # 0
+	z = mean + z/sdev
+ENDIF
+RETURN z	
+ENDFUNC