#ifndef FE25519_H
#define FE25519_H

#define fe25519                crypto_sign_ed25519_amd64_64_fe25519
#define fe25519_freeze         crypto_sign_ed25519_amd64_64_fe25519_freeze
#define fe25519_unpack         crypto_sign_ed25519_amd64_64_fe25519_unpack
#define fe25519_pack           crypto_sign_ed25519_amd64_64_fe25519_pack
#define fe25519_iszero_vartime crypto_sign_ed25519_amd64_64_fe25519_iszero_vartime
#define fe25519_iseq_vartime   crypto_sign_ed25519_amd64_64_fe25519_iseq_vartime
#define fe25519_cmov           crypto_sign_ed25519_amd64_64_fe25519_cmov
#define fe25519_setint         crypto_sign_ed25519_amd64_64_fe25519_setint
#define fe25519_neg            crypto_sign_ed25519_amd64_64_fe25519_neg
#define fe25519_getparity      crypto_sign_ed25519_amd64_64_fe25519_getparity
#define fe25519_add            crypto_sign_ed25519_amd64_64_fe25519_add
#define fe25519_sub            crypto_sign_ed25519_amd64_64_fe25519_sub
#define fe25519_mul            crypto_sign_ed25519_amd64_64_fe25519_mul
#define fe25519_mul121666      crypto_sign_ed25519_amd64_64_fe25519_mul121666
#define fe25519_square         crypto_sign_ed25519_amd64_64_fe25519_square
#define fe25519_invert         crypto_sign_ed25519_amd64_64_fe25519_invert
#define fe25519_pow2523        crypto_sign_ed25519_amd64_64_fe25519_pow2523

typedef struct 
{
  unsigned long long v[4]; 
}
fe25519;

void fe25519_freeze(fe25519 *r);

void fe25519_unpack(fe25519 *r, const unsigned char x[32]);

void fe25519_pack(unsigned char r[32], const fe25519 *x);

void fe25519_cmov(fe25519 *r, const fe25519 *x, unsigned char b);

void fe25519_cswap(fe25519 *r, fe25519 *x, unsigned char b);

void fe25519_setint(fe25519 *r, unsigned int v);

void fe25519_neg(fe25519 *r, const fe25519 *x);

unsigned char fe25519_getparity(const fe25519 *x);

int fe25519_iszero_vartime(const fe25519 *x);

int fe25519_iseq_vartime(const fe25519 *x, const fe25519 *y);

void fe25519_add(fe25519 *r, const fe25519 *x, const fe25519 *y);

void fe25519_sub(fe25519 *r, const fe25519 *x, const fe25519 *y);

void fe25519_mul(fe25519 *r, const fe25519 *x, const fe25519 *y);

void fe25519_mul121666(fe25519 *r, const fe25519 *x);

void fe25519_square(fe25519 *r, const fe25519 *x);

void fe25519_pow(fe25519 *r, const fe25519 *x, const unsigned char *e);

void fe25519_invert(fe25519 *r, const fe25519 *x);

void fe25519_pow2523(fe25519 *r, const fe25519 *x);

#endif