Field.sqrt: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend as Field
Lines 110-112 of bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend&start_line=110&end_line=112

import Base

# a^((p + 1) / 4): a square root of a when a is a square (p = 3 mod 4)
def sqrt(+a: List<&2, Nat>) -> List<&2, Nat>:
  pow(a, sqrt_bits(), one())

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend&name=one
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend&name=pow
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/secp256k1/field.bend&name=sqrt_bits