Improve checks at top of _fe_negate methods
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@ -391,6 +391,10 @@ SECP256K1_INLINE static void secp256k1_fe_negate(secp256k1_fe *r, const secp256k
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#ifdef VERIFY
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VERIFY_CHECK(a->magnitude <= m);
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secp256k1_fe_verify(a);
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VERIFY_CHECK(0x3FFFC2FUL * 2 * (m + 1) >= 0x3FFFFFFUL * 2 * m);
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VERIFY_CHECK(0x3FFFFBFUL * 2 * (m + 1) >= 0x3FFFFFFUL * 2 * m);
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VERIFY_CHECK(0x3FFFFFFUL * 2 * (m + 1) >= 0x3FFFFFFUL * 2 * m);
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VERIFY_CHECK(0x03FFFFFUL * 2 * (m + 1) >= 0x03FFFFFUL * 2 * m);
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#endif
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r->n[0] = 0x3FFFC2FUL * 2 * (m + 1) - a->n[0];
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r->n[1] = 0x3FFFFBFUL * 2 * (m + 1) - a->n[1];
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@ -377,6 +377,9 @@ SECP256K1_INLINE static void secp256k1_fe_negate(secp256k1_fe *r, const secp256k
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#ifdef VERIFY
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VERIFY_CHECK(a->magnitude <= m);
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secp256k1_fe_verify(a);
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VERIFY_CHECK(0xFFFFEFFFFFC2FULL * 2 * (m + 1) >= 0xFFFFFFFFFFFFFULL * 2 * m);
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VERIFY_CHECK(0xFFFFFFFFFFFFFULL * 2 * (m + 1) >= 0xFFFFFFFFFFFFFULL * 2 * m);
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VERIFY_CHECK(0x0FFFFFFFFFFFFULL * 2 * (m + 1) >= 0x0FFFFFFFFFFFFULL * 2 * m);
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#endif
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r->n[0] = 0xFFFFEFFFFFC2FULL * 2 * (m + 1) - a->n[0];
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r->n[1] = 0xFFFFFFFFFFFFFULL * 2 * (m + 1) - a->n[1];
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