#include <math.h>
#include <stdio.h>
#include <assert.h>
#include <limits.h>
#include <stdint.h>
#include "test.h"

uint64_t next();
void jump();
void long_jump();

int test_65() {
  for (unsigned x = 0; ; x++) {
    if (odd_ones(x) != __builtin_parity(x)) {
      fprintf(stderr, "x = 0x%X\n", x);
      return FAILED;
    }

    if (x == UINT_MAX) {
      return PASSED;
    }
  }
}

int test_66() {
  for (unsigned x = 0; ; x++) {
    if ((x == 0 && leftmost_one(x) != 0) || (x != 0 && leftmost_one(x) != (1 << (31 - __builtin_clz(x))))) {
      fprintf(stderr, "x = 0x%X\n", x);
      return FAILED;
    }

    if (x == UINT_MAX) {
      return PASSED;
    }
  }
}

int test_75(int test_cases) {
  for (int i = 0; i < test_cases; i++) {
    unsigned x = next(), y = next();
    if ((uint64_t) x * y != ((uint64_t) unsigned_high_prod(x, y) << 32) + x * y) {
      fprintf(stderr, "x = 0x%X, y = 0x%X\n", x, y);
      return FAILED;
    }
  }

  return PASSED;
}

int signed_high_prod(int x, int y) {
  int64_t p = (int64_t) x * y;
  return p >> (sizeof(int) << 3);
}

int test_80(int test_cases) {
  for (int i = 0; i < test_cases; i++) {
    int x = next();
    if (threefourths(x) != (int64_t) x * 3 / 4) {
      fprintf(stderr, "x = 0x%X\n", x);
      return FAILED;
    }
  }

  return PASSED;
}

float_bits f2b(float x) {
  return *(float_bits*) &x;
}

float b2f(float_bits x) {
  return *(float*) &x;
}

int test_95() {
  for (float_bits x = 0; ; x++) {
    float y = b2f(x) / 2, z = b2f(float_half(x));
    if (y != z && !(isnan(y) && isnan(z))) {
      fprintf(stderr, "%X %X\n", f2b(b2f(x) / 2), float_half(x));
      fprintf(stderr, "f = 0x%X\n", x);
      return FAILED;
    }

    if (x == UINT_MAX) {
      return PASSED;
    }
  }
}

int test_97() {
  for (int x = INT_MIN; ; x++) {
    if (f2b((float) x) != float_i2f(x)) {
      fprintf(stderr, "i = 0x%X\n", x);
      return FAILED;
    }

    if (x == INT_MAX) {
      return PASSED;
    }
  }
}