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A comment on Why does changing 0.1f to 0 slow down performance by 10x?. Parent comment

Re:Why does changing 0.1f to 0 slow down performance by 10x? by lelf on Sunday March 11, 2012 @05:21PM (#3691325)
1/(0-0) = -∞, 1/(0+0) = ∞
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Re:Why does changing 0.1f to 0 slow down performance by 10x? by stephencanon on Sunday March 11, 2012 @05:34PM (#3691355)
Actually, (0-0) evaluates to +0 in the default rounding mode, so both of those expressions will typically return +∞.

1/-0 will give you -∞, of course.

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Re:Why does changing 0.1f to 0 slow down performance by 10x? by lelf on Sunday March 11, 2012 @08:21PM (#3691787)
Well, I meant it as in math notation, not in C.

(Strictly speaking, 1/0 in C is kaboom! (undefined behaviour))

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