[Info-vax] Floating Point (was: Re: DCL's flaws (both scripting and UI))

[Stephen Hoffman]

On 2015-01-31 18:42:41 +0000, John Reagan said:

> Ada has T'MODEL_EPSILON, Pascal has EPSREAL, Fortran has EPSILON() to 
> help you in this area.  It isn't the same as "almost equal", but you 
> can do something like
> 
> ABS(A-B) <= EPSILON
> 
> or such.

The C float.h include file contains the epsilon values (FLT_EPSILON, 
DBL_EPSILON, LDBL_EPSILON), and C++ at least as far back as C++98 has 
std::numeric_limits<T>::epsilon().



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