github.com/consensys/gnark-crypto@v0.14.0/ecc/bls12-377/fp/element_utils.go (about)

     1  // Copyright 2020 ConsenSys Software Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package fp
    16  
    17  // MulByNonResidueInv ...
    18  func (z *Element) MulByNonResidueInv(x *Element) *Element {
    19  	qnrInv := Element{
    20  		9255502405446297221,
    21  		10229180150694123945,
    22  		9215585410771530959,
    23  		13357015519562362907,
    24  		5437107869987383107,
    25  		16259554076827459,
    26  	}
    27  	z.Mul(x, &qnrInv)
    28  	return z
    29  }