//   Copyright Naoki Shibata and contributors 2010 - 2020.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)

typedef struct {
  uint64_t l, h;
} xuint128;

xuint128 xu(uint64_t h, uint64_t l);
xuint128 sll128(uint64_t u, int c);
xuint128 add128(xuint128 x, xuint128 y);
int lt128(xuint128 x, xuint128 y);

void xsrand(uint64_t s);
uint64_t xrand();
void memrand(void *p, int size);
Sleef_quad rndf128(Sleef_quad min, Sleef_quad max);
Sleef_quad rndf128x();

int readln(int fd, char *buf, int cnt);
int startsWith(char *str, char *prefix);

int iszerof128(Sleef_quad a);
int isnegf128(Sleef_quad a);
int isinff128(Sleef_quad a);
int isnonnumberf128(Sleef_quad a);
int isnanf128(Sleef_quad a);

static double u2d(uint64_t u) {
  union {
    double f;
    uint64_t i;
  } tmp;
  tmp.i = u;
  return tmp.f;
}

static uint64_t d2u(double d) {
  union {
    double f;
    uint64_t i;
  } tmp;
  tmp.f = d;
  return tmp.i;
}

#ifdef USEMPFR
void mpfr_set_f128(mpfr_t frx, Sleef_quad a, mpfr_rnd_t rnd);
Sleef_quad mpfr_get_f128(mpfr_t m, mpfr_rnd_t rnd);

double countULPf128(Sleef_quad d, mpfr_t c, int checkNegZero);
char *sprintfr(mpfr_t fr);
char *sprintf128(Sleef_quad x);

double cast_d_q(Sleef_quad q);
Sleef_quad cast_q_str(const char *s);
Sleef_quad add_q_d(Sleef_quad q, double d);
#endif
