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5

How about using "RuntimeErrorHandler": f = Compile[{{x, _Real}, {y, _Real}}, Log[(x - y^2 - 2. x)^2]/(y x^2 - 2 (x + y) - y^2 + 3.), "RuntimeOptions" -> {"RuntimeErrorHandler" -> Function[Throw[$Failed]]} ]; Catch[Quiet@f[-196, 15]] // AbsoluteTiming (* {0.000019, 0.0000116843} *) Catch[Quiet@f[-196, 14]] // AbsoluteTiming (* {0.000051, ...


4

I use \$MessagePrePrint = StandardForm since without that the real number 1.5 is displayed in a message as 1.5`. However, you might have $MessagePrePrint set to something else. Check is used to control what should happen when a built-in message occurs. Quiet prevents the built-in message from being displayed. I made a pure function (i.e. #1,#2,& ...



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