*Element) One() *Element { *v = *feOne return v } // reduce reduces v modulo 2^255 - 19 and returns it. func (v *Element) reduce() *Element { v.carryPropagate() // After the light reduction we now have a field element representation // v < 2^255 + 2^13 * 19, but need v < 2^255 - 19. // If v >= 2^255 - 19, then v + 19 >= 2^255, which would overflow 2^255 - 1, // generating a carry. That is, c will be 0 if v < 2^255 - 19, and 1 otherwise. c := (v.l0 + 19) >> 51 c = (v.l1 + c) >> 51 c = (v.l2 + c) >>...

*Element) One() *Element { *v = *feOne return v } // reduce reduces v modulo 2^255 - 19 and returns it. func (v *Element) reduce() *Element { v.carryPropagate() // After the light reduction we now have a field element representation // v < 2^255 + 2^13 * 19, but need v < 2^255 - 19. // If v >= 2^255 - 19, then v + 19 >= 2^255, which would overflow 2^255 - 1, // generating a carry. That is, c will be 0 if v < 2^255 - 19, and 1 otherwise. c := (v.l0 + 19) >> 51 c = (v.l1 + c) >> 51 c = (v.l2 + c) >>...

pkg crypto/ecdsa, method (*PublicKey) ECDH() (*ecdh.PublicKey, error) #56088
pkg crypto/ed25519, func VerifyWithOptions(PublicKey, []uint8, []uint8, *Options) error #31804
pkg crypto/ed25519, method (*Options) HashFunc() crypto.Hash #31804
pkg crypto/ed25519, type Options struct #31804
pkg crypto/ed25519, type Options struct, Context string #31804
pkg crypto/ed25519, type Options struct, Hash crypto.Hash #31804