#pragma once

#include <stdint.h>

/* From fe.h */

typedef int32_t fe[10];

/* From ge.h */

typedef struct
{
    fe X;
    fe Y;
    fe Z;
} ge_p2;

typedef struct
{
    fe X;
    fe Y;
    fe Z;
    fe T;
} ge_p3;

typedef struct
{
    fe X;
    fe Y;
    fe Z;
    fe T;
} ge_p1p1;

typedef struct
{
    fe yplusx;
    fe yminusx;
    fe xy2d;
} ge_precomp;

typedef struct
{
    fe YplusX;
    fe YminusX;
    fe Z;
    fe T2d;
} ge_cached;

/* From ge_add.c */

void ge_add(ge_p1p1 *, const ge_p3 *, const ge_cached *);

/* From ge_double_scalarmult.c, modified */

typedef ge_cached ge_dsmp[8];
extern const ge_precomp ge_Bi[8];
void ge_dsm_precomp(ge_dsmp r, const ge_p3 *s);
void ge_double_scalarmult_base_vartime(ge_p2 *, const unsigned char *, const ge_p3 *, const unsigned char *);

/* From ge_frombytes.c, modified */

extern const fe fe_sqrtm1;
extern const fe fe_d;
int ge_frombytes_vartime(ge_p3 *, const unsigned char *);

/* From ge_p1p1_to_p2.c */

void ge_p1p1_to_p2(ge_p2 *, const ge_p1p1 *);

/* From ge_p1p1_to_p3.c */

void ge_p1p1_to_p3(ge_p3 *, const ge_p1p1 *);

/* From ge_p2_dbl.c */

void ge_p2_dbl(ge_p1p1 *, const ge_p2 *);

/* From ge_p3_to_cached.c */

extern const fe fe_d2;
void ge_p3_to_cached(ge_cached *, const ge_p3 *);

/* From ge_p3_to_p2.c */

void ge_p3_to_p2(ge_p2 *, const ge_p3 *);

/* From ge_p3_tobytes.c */

void ge_p3_tobytes(unsigned char *, const ge_p3 *);

/* From ge_scalarmult_base.c */

extern const ge_precomp ge_base[32][8];
void ge_scalarmult_base(ge_p3 *, const unsigned char *);

/* From ge_sub.c */

void ge_sub(ge_p1p1 *, const ge_p3 *, const ge_cached *);

/* From ge_tobytes.c */

void ge_tobytes(unsigned char *, const ge_p2 *);

/* From sc_reduce.c */

void sc_reduce(unsigned char *);

/* New code */

void ge_scalarmult(ge_p2 *, const unsigned char *, const ge_p3 *);
void ge_double_scalarmult_precomp_vartime(
    ge_p2 *,
    const unsigned char *,
    const ge_p3 *,
    const unsigned char *,
    const ge_dsmp);
int ge_check_subgroup_precomp_vartime(const ge_dsmp);
void ge_mul8(ge_p1p1 *, const ge_p2 *);
extern const fe fe_ma2;
extern const fe fe_ma;
extern const fe fe_fffb1;
extern const fe fe_fffb2;
extern const fe fe_fffb3;
extern const fe fe_fffb4;
void ge_fromfe_frombytes_vartime(ge_p2 *, const unsigned char *);
void sc_0(unsigned char *);
void sc_reduce32(unsigned char *);
void sc_add(unsigned char *, const unsigned char *, const unsigned char *);
void sc_sub(unsigned char *, const unsigned char *, const unsigned char *);
void sc_mulsub(unsigned char *, const unsigned char *, const unsigned char *, const unsigned char *);
int sc_check(const unsigned char *);
int sc_isnonzero(const unsigned char *); /* Doesn't normalize */