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use Z.eqb_eq instead of Z.eqb_compare, fold Zeq_bool (for coq/coq#19801) #534

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use Z.eqb_eq instead of Z.eqb_compare, fold Zeq_bool (for coq/coq#19801) #534

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4 changes: 1 addition & 3 deletions lib/IEEE754_extra.v
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Original file line number Diff line number Diff line change
Expand Up @@ -992,9 +992,7 @@ Remark bounded_Bexact_inverse:
emin <= e <= emax - prec <-> bounded prec emax Bexact_inverse_mantissa e = true.
Proof.
intros. unfold bounded, canonical_mantissa. rewrite andb_true_iff.
rewrite ?Z.eqb_compare.
fold (Zeq_bool (fexp (Z.pos (digits2_pos Bexact_inverse_mantissa) + e)) e).
rewrite <- Zeq_is_eq_bool. rewrite <- Zle_is_le_bool.
rewrite Z.eqb_eq. rewrite <- Zle_is_le_bool.
rewrite Bexact_inverse_mantissa_digits2_pos.
unfold fexp, FLT_exp, emin. lia.
Qed.
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