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  1. // Copyright 2020 ConsenSys AG
  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. // Code generated by goff (v0.2.0) DO NOT EDIT
  15. // Package ff contains field arithmetic operations
  16. package ff
  17. // MulAssignElement z = z * x mod q (constant time)
  18. // calling this instead of z.MulAssign(x) is prefered for performance critical path
  19. //go:noescape
  20. func MulAssignElement(res, y *Element)
  21. // Mul z = x * y mod q (constant time)
  22. // see https://hackmd.io/@zkteam/modular_multiplication
  23. func (z *Element) Mul(x, y *Element) *Element {
  24. res := *x
  25. MulAssignElement(&res, y)
  26. z.Set(&res)
  27. return z
  28. }
  29. // MulAssign z = z * x mod q (constant time)
  30. // see https://hackmd.io/@zkteam/modular_multiplication
  31. func (z *Element) MulAssign(x *Element) *Element {
  32. MulAssignElement(z, x)
  33. return z
  34. }