A question for any int to float guru out there (Erik?),
which of the two truncation codes below would be faster?

(1)
double a; long b;
b = (long) a;

(2)
double a; long b;
b = lrint(a);
b = b <= a ? b : b - 1;

(both assuming positive numbers only).
I suppose my question is whether b <= a, comparing
fixed and floating-point, involves any casting
that might slow down things.

I would expect that if there is any casting it would
be long -> double; I suppose that does not carry
any penalty, or does it?

Thanks

Victor

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