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Update fp_primer.md
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zoddicus authored Nov 2, 2023
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Expand Up @@ -701,8 +701,8 @@ f32 values.
AbstractFloat internally is defined as a f64, and this applies for exact and
correctly rounded accuracies. Thus, correctly rounded refers to the nearest f64
values. However, AbstractFloat differs for ULP and absolute errors. Reading
the spec strictly, these all have unbounded accuracies, but is recommended that
their accuracies be at least as good as the f32 equivalent.
the spec strictly, these all have unbounded accuracies, but it is recommended
that their accuracies be at least as good as the f32 equivalent.

The difference between f32 and f64 ULP at a specific value X are significant, so
at least as good as f32 requirement is always less strict than if it was
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