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On Saturday 08 May 2004 17:28, Tobias Schlüter wrote:
This patch fixes the RRSPACING intrinsic. It didn't return the correct result for a zero argument. I don't really understand how the original code worked, but I verified that RRSPACING(x) == x/SPACING(x) for a wide range of arguments. I used the condition (expn == 0 && frac == 0) to check for a zero argument, if this is not the correct check, please correct this.
I think frac==0 is a sufficient test. The result of clz(0) is undefined, so we want to avoid that anyway
BTW the optimizers don't believe that x / (SPACING(x) * RRSPACING(x)) == 1 :-)
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