Function rk_devfill

numpy/random/src/mt19937/randomkit.c:506–544

}

rk_error rk_devfill(void *buffer, size_t size, int strong) {
#ifndef _WIN32
  FILE *rfile;
  int done;

  if (strong) {
    rfile = fopen(RK_DEV_RANDOM, "rb");
  } else {
    rfile = fopen(RK_DEV_URANDOM, "rb");
  }
  if (rfile == NULL) {
    return RK_ENODEV;
  }
  done = fread(buffer, size, 1, rfile);
  fclose(rfile);
  if (done) {
    return RK_NOERR;
  }
#else

#ifndef RK_NO_WINCRYPT
  HCRYPTPROV hCryptProv;
  BOOL done;

  if (!CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL,
                           CRYPT_VERIFYCONTEXT) ||
      !hCryptProv) {
    return RK_ENODEV;
  }
  done = CryptGenRandom(hCryptProv, size, (unsigned char *)buffer);
  CryptReleaseContext(hCryptProv, 0);
  if (done) {
    return RK_NOERR;
  }
#endif

#endif
  return RK_ENODEV;
}

rk_error rk_altfill(void *buffer, size_t size, int strong, rk_state *state) {
  rk_error err;