removed pow call and replaced with precomputed constant #133

NilFoundation · Feb 26, 2024 · d4c4f20 · d4c4f20
1 parent 6f8a465
commit d4c4f20
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/include/nil/crypto3/algebra/fields/detail/extension_params/bls12/fp2.hpp b/include/nil/crypto3/algebra/fields/detail/extension_params/bls12/fp2.hpp
@@ -121,7 +121,6 @@ namespace nil {
                             0x00,
                             0x1ABEF7237D62007BB9B2EDA5AFCB52F9D179F23DBD49B8D1B24CF7C1BF8066791317689172D0F4CB90CF47182B7D7B2_cppui377};
 
-//                        constexpr static const extended_integral_type group_order_minus_one_half = (pow(base_field_type::modulus, 2)-1)/2;
                         constexpr static const extended_integral_type group_order_minus_one_half =
                             0x16983E85DD7FD912B489DD9B0931E25DC5C3ED257749F8FAF38A09EED26AE04E80C57DC833066E00A7389281526B62305555545DB857018C1925CAC31C64EB5E5FDE91AF8E04D256D1347970DEC00399C692A780000008508C00000000000_cppui753;
 

diff --git a/include/nil/crypto3/algebra/fields/detail/extension_params/bn128/fp2.hpp b/include/nil/crypto3/algebra/fields/detail/extension_params/bn128/fp2.hpp
@@ -75,7 +75,8 @@ namespace nil {
                             0xB20DCB5704E326A0DD3ECD4F30515275398A41A4E1DC5D347CFBBEDDA71CF82_cppui252,
                             0xB1FFEFD8885BF22252522C29527D19F05CFC50E9715370AB0F3A6CA462390C_cppui248};
 
-                        constexpr static const extended_integral_type group_order_minus_one_half = (pow(base_field_type::modulus, 2)-1)/2;
+                        constexpr static const extended_integral_type group_order_minus_one_half =
+                            0x492E25C3B1E5FCE2CCD37BE01A4690E5805C2A88B1BAB031376FD2E1A6359C682344F4ABD09216425280C4E36CB656E5301039684F560809DAA2C5113AEB4D8_cppui507;
 
                         /*constexpr static const std::array<non_residue_type, 2> Frobenius_coeffs_c1 =
                            {non_residue_type(0x00), non_residue_type(0x00)};*/