C++ NUM_ELEMENTS函数代码示例

/* Store a bitmap in the cache */
void
cache_put_bitmap(rdcConnection conn, uint8 id, uint16 idx, HBITMAP bitmap)
{
	HBITMAP old;

	if ((id < NUM_ELEMENTS(conn->bmpcache)) && (idx < NUM_ELEMENTS(conn->bmpcache[0])))
	{
		old = conn->bmpcache[id][idx].bitmap;
		if (old != NULL)
			ui_destroy_bitmap(old);
		conn->bmpcache[id][idx].bitmap = bitmap;
				
		if (IS_PERSISTENT(id))
		{
			if (old == NULL)
				conn->bmpcache[id][idx].previous = conn->bmpcache[id][idx].next = NOT_SET;

			cache_bump_bitmap(conn, id, idx, TO_TOP);
			if (conn->bmpcacheCount[id] > BMPCACHE2_C2_CELLS)
				cache_evict_bitmap(conn, id);
		}
	}
	else if ((id < NUM_ELEMENTS(conn->volatileBc)) && (idx == 0x7fff))
	{
		old = conn->volatileBc[id];
		if (old != NULL)
			ui_destroy_bitmap(old);
		conn->volatileBc[id] = bitmap;
	}
	else
	{
		error("put bitmap %d:%d\n", id, idx);
	}
}

/* Store a bitmap in the cache */
void
cache_put_bitmap(uint8 id, uint16 idx, RD_HBITMAP bitmap)
{
	RD_HBITMAP old;

	if ((id < NUM_ELEMENTS(g_bmpcache)) && (idx < NUM_ELEMENTS(g_bmpcache[0])))
	{
		old = g_bmpcache[id][idx].bitmap;
		if (old != NULL)
			ui_destroy_bitmap(old);
		g_bmpcache[id][idx].bitmap = bitmap;

		if (IS_PERSISTENT(id))
		{
			if (old == NULL)
				g_bmpcache[id][idx].previous = g_bmpcache[id][idx].next = NOT_SET;

			cache_bump_bitmap(id, idx, TO_TOP);
			if (g_bmpcache_count[id] > BMPCACHE2_C2_CELLS)
				cache_evict_bitmap(id);
		}
	}
	else if ((id < NUM_ELEMENTS(g_volatile_bc)) && (idx == 0x7fff))
	{
		old = g_volatile_bc[id];
		if (old != NULL)
			ui_destroy_bitmap(old);
		g_volatile_bc[id] = bitmap;
	}
	else
	{
		error("put bitmap %d:%d\n", id, idx);
	}
}

char *
LapSkillToAscii(
     uchar     skill_level              /* In  Skill level                 */
) {
     if (skill_level >= NUM_ELEMENTS(skill)) {
          skill_level = NUM_ELEMENTS(skill) - 1;
     }
     return skill[skill_level];
}

char *
LapCircuitText(
     int       circuit_number           /* In  Cicruit number              */
) {
     if (circuit_number >= NUM_ELEMENTS(circuits)) {
          circuit_number = NUM_ELEMENTS(circuits) - 1;
     }
     return circuits[circuit_number];
}

/* Retrieve a glyph from the font cache */
FONTGLYPH *
cache_get_font(uint8 font, uint16 character)
{
	FONTGLYPH *glyph;

	if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0])))
	{
		glyph = &g_fontcache[font][character];
		if (glyph->pixmap != NULL)
			return glyph;
	}

	error("get font %d:%d\n", font, character);
	return NULL;
}

/* Retrieve a bitmap from the cache */
HBITMAP
cache_get_bitmap(uint8 cache_id, uint16 cache_idx)
{
	HBITMAP bitmap;

	if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0])))
	{
		bitmap = bmpcache[cache_id][cache_idx];
		if (bitmap != NULL)
			return bitmap;
	}

	error("get bitmap %d:%d\n", cache_id, cache_idx);
	return NULL;
}

TeamsWindow::TeamsWindow(
     HINSTANCE      hInst,
     HWND           hWndParent,
     unsigned short usWidth,
     unsigned short usHeight
) : ChildWindow(hInst, TEAMS_CLASS_NAME, GetAppName(), WS_CHILD, CHILD_ID_TEAMS, hWndParent) {
     unsigned short i;

     fInBitmap      = FALSE;
     usSelectedTeam = 0;

     usClientWidth  = usWidth;
     usClientHeight = usHeight;

     usMiniCarWidth  = usClientWidth / TEAMS_NUM_X;
     usMiniCarHeight = usClientHeight / TEAMS_NUM_Y;

     pClientBitmap = new Bitmap(pF1CarBitmap, usClientWidth, usClientHeight);
     ASSERT(pClientBitmap != NULL);

     pCursorTeamCar = new Cursor(Instance(), APP_CURSOR_TEAMCAR);
     ASSERT(pCursorTeamCar != NULL);


     CAR_REGIONS    *pCR = car_regions;
     for (i = 0; i < NUM_ELEMENTS(car_regions); i++, pCR++) {
          pCR->hRgn = CreatePolygonRgn(pCR->points, pCR->usPoints, ALTERNATE);
          ASSERT(pCR->hRgn != NULL);
     }

     UpdateMemoryImage();
     DragAcceptFiles(Handle(), TRUE);
}

const struct log_minor_info *dal_logger_enum_log_minor_info(
		struct dal_logger *logger,
		enum log_major major,
		unsigned int enum_index)
{
	const struct log_minor_info *minor_info = NULL;
	uint32_t i;

	for (i = 0; i < NUM_ELEMENTS(log_major_mask_info_tbl); i++) {

		const struct log_major_mask_info *maj_mask_info =
				&log_major_mask_info_tbl[i];

		if (maj_mask_info->major_info.major == major) {

			if (maj_mask_info->minor_tbl != NULL) {
				uint32_t j;

				for (j = 0; j < maj_mask_info->tbl_element_cnt; j++) {

					minor_info = &maj_mask_info->minor_tbl[j];

					if (minor_info->minor == enum_index)
						return minor_info;
				}
			}

			break;
		}
	}
	return NULL;

}

SAEventFlags::SAEventFlags(QObject *parent)
	: super(512,					// Total number of bit flags.
		"SADataEvents",				// Translation context.
		&sa_event_flags_desc[0],		// Bit flags with names.
		NUM_ELEMENTS(sa_event_flags_desc)-1,	// Number of named flags.
		parent)
{ }

static void 
print_help (void)
{
  int	i, j;
 
  usage(); 

  printf("\n");

  for (i=0;i<sizeof(help_string)/sizeof(help_string[0]);i++)
    {
      printf("%s\n", help_string[i]);

      /* Check if the string contains "oid" string.  */
      if (strstr(help_string[i], "oid")) 
        {
	  printf("\n\toid index\tOID info\n");
	  printf("\t------------------------------------\n");

	  for (j = 0; j < NUM_ELEMENTS(ilo_old_table); j++) 
	    printf("\t%4d\t\t%s\n", j + 1, 
		ilo_old_table[j].oid_pool[HLTH_GROUP_OID].oid_name);

	  printf("\t------------------------------------\n");
	}
    }

  return ;
}

static void log_major_minor(struct log_entry *entry)
{
	uint32_t i;
	enum log_major major = entry->major;
	enum log_minor minor = entry->minor;

	for (i = 0; i < NUM_ELEMENTS(log_major_mask_info_tbl); i++) {

		const struct log_major_mask_info *maj_mask_info =
				&log_major_mask_info_tbl[i];

		if (maj_mask_info->major_info.major == major) {

			dal_logger_append(entry, "[%s_",
					maj_mask_info->major_info.major_name);

			if (maj_mask_info->minor_tbl != NULL) {
				uint32_t j;

				for (j = 0; j < maj_mask_info->tbl_element_cnt; j++) {

					const struct log_minor_info *min_info = &maj_mask_info->minor_tbl[j];

					if (min_info->minor == minor)
						dal_logger_append(entry, "%s]\t", min_info->minor_name);
				}
			}

			break;
		}
	}
}

unsigned char
LapCircuitLaps(
     int       circuit_number           /* In  Cicruit number              */
) {
     if (circuit_number >= NUM_ELEMENTS(circuits_laps)) {
          circuit_number = 0;
     }
     return circuits_laps[circuit_number];
}

/* Store a bitmap in the cache */
void
cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap)
{
	HBITMAP old;

	if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0])))
	{
		old = bmpcache[cache_id][cache_idx];
		if (old != NULL)
			ui_destroy_bitmap(old);

		bmpcache[cache_id][cache_idx] = bitmap;
	}
	else
	{
		error("put bitmap %d:%d\n", cache_id, cache_idx);
	}
}

/* ----------- Object init and destruction ----------- */
static bool construct(struct dc_context *ctx, struct dal_logger *logger)
{
	uint32_t i;
	/* malloc buffer and init offsets */

	logger->log_buffer_size = DAL_LOGGER_BUFFER_MAX_SIZE;
	logger->log_buffer = (char *)dm_alloc(logger->log_buffer_size *
		sizeof(char));

	if (!logger->log_buffer)
		return false;

	/* todo: Fill buffer with \0 if not done by dal_alloc */

	/* Initialize both offsets to start of buffer (empty) */
	logger->buffer_read_offset = 0;
	logger->buffer_write_offset = 0;

	logger->write_wrap_count = 0;
	logger->read_wrap_count = 0;
	logger->open_count = 0;

	logger->flags.bits.ENABLE_CONSOLE = 1;
	logger->flags.bits.ENABLE_BUFFER = 0;

	logger->ctx = ctx;

	/* malloc and init minor mask array */
	logger->log_enable_mask_minors =
			(uint32_t *)dm_alloc(NUM_ELEMENTS(log_major_mask_info_tbl)
				* sizeof(uint32_t));
	if (!logger->log_enable_mask_minors)
		return false;

	/* Set default values for mask */
	for (i = 0; i < NUM_ELEMENTS(log_major_mask_info_tbl); i++) {

		uint32_t dflt_mask = log_major_mask_info_tbl[i].default_mask;

		logger->log_enable_mask_minors[i] = dflt_mask;
	}

	return true;
}

int main(int /* argc */, char ** /*argv*/)
{
    /* Conversion using encode() and decode(), with encoding flags. */

    try
    {
        /* Flags that will control the conversions. */
        unsigned  encodingFlags   =   b64::B64_F_LINE_LEN_USE_PARAM;      /* encode() will use the lineLen parameter to determine line length. */
        unsigned  decodingFlags   =   b64::B64_F_STOP_ON_UNKNOWN_CHAR;    /* decode() will fail if any non-b64-character / non-white-space character is in the encoded string. */
        int       encodingLineLen =   4;                                  /* Encoding line length will be 4 characters. */

        /* Declare an array of bytes to use as the 'binary' blob to encode. */
        unsigned char       bytes[]  =   { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        std::cout << "Converting " << NUM_ELEMENTS(bytes) << " bytes:\n";
        std::copy(  bytes, bytes + NUM_ELEMENTS(bytes)
                ,   stlsoft::FILE_iterator<unsigned char>(stdout, " %d"));
        std::cout << std::endl;

        /* Perform the encoding, whose results are returned in an instance of
         * b64::cpp::string_t.
         */
        b64::cpp::string_t  enc =   b64::cpp::encode(&bytes[0], sizeof(bytes), encodingFlags, encodingLineLen);

        std::cout << "Encoded form: [" << enc << "]" << std::endl;

        /* Perform the decoding, whose results are returned in an instance of
         * b64::cpp::blob_t.
         */
        b64::cpp::blob_t    dec =   b64::cpp::decode(enc, decodingFlags);

        /* Verify that the decoding is exactly the same size and contents as 
         * the encoding.
         */
        assert(0 == ::memcmp(&bytes[0], &dec[0], sizeof(bytes)));
    }
    catch(b64::cpp::coding_exception &x)
    {
        std::cerr << "Exception: " << x.what() << std::endl;
    }

    return EXIT_SUCCESS;
}