Messages in this thread | | | Date | Thu, 25 Apr 2002 11:24:35 -0400 | From | Mark Mielke <> | Subject | Re: FPU, i386 |
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On Thu, Apr 25, 2002 at 10:22:49AM -0400, Richard B. Johnson wrote: > To use the math macros, the comparison should be something like: > if (isless(fabs(a-b), 1.0e-38)) > break;
I might be saying something stupid, but, I was under the impression that floating point '==', assuming it follows IEEE rules, does exactly this.
I know for certain that it does not do memcmp(), as it has to deal with the exponent and mantissa being each off by +/-1 and <</>>1 respectively.
mark
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