diff options
Diffstat (limited to 'src/Spec/PointEncoding.v')
| -rw-r--r-- | src/Spec/PointEncoding.v | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/src/Spec/PointEncoding.v b/src/Spec/PointEncoding.v index f4634f52f..29e359baa 100644 --- a/src/Spec/PointEncoding.v +++ b/src/Spec/PointEncoding.v @@ -20,7 +20,6 @@ Section PointEncoding. {FqEncoding : canonical encoding of (F q) as (Word.word sz)} {sign_bit : F q -> bool} {sign_bit_zero : sign_bit 0 = false} {sign_bit_opp : forall x, x <> 0 -> negb (sign_bit x) = sign_bit (opp x)}. - Existing Instance prime_q. Definition point_enc (p : E.point) : Word.word (S sz) := let '(x,y) := proj1_sig p in Word.WS (sign_bit x) (enc y). @@ -29,19 +28,12 @@ Section PointEncoding. {point_dec : Word.word (S sz) -> option E.point | forall w x, point_dec w = Some x -> (point_enc x = w) } := @PointEncodingPre.point_dec _ _ _ sign_bit. - Definition point_dec := Eval hnf in (proj1_sig point_dec_with_spec). - Definition point_encoding_valid : forall p : E.point, point_dec (point_enc p) = Some p := - @PointEncodingPre.point_encoding_valid _ _ q_5mod8 sqrt_minus1_valid _ _ sign_bit_zero sign_bit_opp. - - Definition point_encoding_canonical : forall x_enc x, point_dec x_enc = Some x -> point_enc x = x_enc := - PointEncodingPre.point_encoding_canonical. - - Instance point_encoding : canonical encoding of E.point as (Word.word (S sz)) := { + Global Instance point_encoding : canonical encoding of E.point as (Word.word (S sz)) := { enc := point_enc; dec := point_dec; - encoding_valid := point_encoding_valid; - encoding_canonical := point_encoding_canonical + encoding_valid := @PointEncodingPre.point_encoding_valid _ _ q_5mod8 sqrt_minus1_valid _ _ sign_bit_zero sign_bit_opp; + encoding_canonical := PointEncodingPre.point_encoding_canonical }. End PointEncoding.
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