Re: FPU, i386

From: Mark Mielke (mark@mark.mielke.cc)
Date: Thu Apr 25 2002 - 10:24:35 EST

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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