FM / private

/usr/include/mysql/server/private

Name	Size	Mode	Actions
atomic/	-	0755	rm
data/	-	0755	rm
providers/	-	0755	rm
aligned.h	1136	0644	edit dl rm
aria_backup.h	1787	0644	edit dl rm
assume_aligned.h	2350	0644	edit dl rm
authors.h	10194	0644	edit dl rm
backup.h	1703	0644	edit dl rm
bounded_queue.h	6093	0644	edit dl rm
client_settings.h	1935	0644	edit dl rm
compat56.h	2280	0644	edit dl rm
config.h	14351	0644	edit dl rm
contributors.h	4931	0644	edit dl rm
create_options.h	4193	0644	edit dl rm
create_tmp_table.h	2808	0644	edit dl rm
cset_narrowing.h	3968	0644	edit dl rm
custom_conf.h	1082	0644	edit dl rm
datadict.h	1700	0644	edit dl rm
ddl_log.h	12807	0644	edit dl rm
debug.h	1234	0644	edit dl rm
debug_sync.h	2046	0644	edit dl rm
derived_handler.h	2379	0644	edit dl rm
derror.h	980	0644	edit dl rm
des_key_file.h	1236	0644	edit dl rm
discover.h	1570	0644	edit dl rm
dur_prop.h	1082	0644	edit dl rm
embedded_priv.h	1733	0644	edit dl rm
events.h	4704	0644	edit dl rm
event_data_objects.h	4187	0644	edit dl rm
event_db_repository.h	3648	0644	edit dl rm
event_parse_data.h	2899	0644	edit dl rm
event_queue.h	3438	0644	edit dl rm
event_scheduler.h	3290	0644	edit dl rm
field.h	222414	0644	edit dl rm
field_comp.h	1174	0644	edit dl rm
filesort.h	7283	0644	edit dl rm
filesort_utils.h	8195	0644	edit dl rm
ft_global.h	3113	0644	edit dl rm
gcalc_slicescan.h	17330	0644	edit dl rm
gcalc_tools.h	11900	0644	edit dl rm
grant.h	2758	0644	edit dl rm
group_by_handler.h	3534	0644	edit dl rm
gstream.h	2437	0644	edit dl rm
handler.h	199857	0644	edit dl rm
handle_connections_win.h	884	0644	edit dl rm
hash.h	4452	0644	edit dl rm
hash_filo.h	5599	0644	edit dl rm
ha_handler_stats.h	2335	0644	edit dl rm
ha_partition.h	64696	0644	edit dl rm
ha_sequence.h	6245	0644	edit dl rm
heap.h	9487	0644	edit dl rm
hostname.h	5419	0644	edit dl rm
ilist.h	7237	0644	edit dl rm
init.h	852	0644	edit dl rm
innodb_priv.h	1319	0644	edit dl rm
item.h	285458	0644	edit dl rm
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item_vers.h	4413	0644	edit dl rm
item_windowfunc.h	35089	0644	edit dl rm
item_xmlfunc.h	4650	0644	edit dl rm
json_table.h	9667	0644	edit dl rm
key.h	2132	0644	edit dl rm
keycaches.h	1995	0644	edit dl rm
lex.h	29840	0644	edit dl rm
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lex_ident.h	2122	0644	edit dl rm
lex_string.h	4077	0644	edit dl rm
lex_symbol.h	1323	0644	edit dl rm
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lf.h	6462	0644	edit dl rm
lock.h	2220	0644	edit dl rm
log.h	46462	0644	edit dl rm
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log_event_data_type.h	1890	0644	edit dl rm
log_event_old.h	19830	0644	edit dl rm
log_slow.h	2442	0644	edit dl rm
maria.h	5872	0644	edit dl rm
mariadb.h	1277	0644	edit dl rm
mdl.h	38893	0644	edit dl rm
mem_root_array.h	7106	0644	edit dl rm
message.h	1195	0644	edit dl rm
multi_range_read.h	23179	0644	edit dl rm
myisam.h	17506	0644	edit dl rm
myisamchk.h	4734	0644	edit dl rm
myisammrg.h	4897	0644	edit dl rm
myisampack.h	14929	0644	edit dl rm
mysqld.h	41225	0644	edit dl rm
mysqld_default_groups.h	204	0644	edit dl rm
mysqld_suffix.h	1201	0644	edit dl rm
mysys_err.h	3022	0644	edit dl rm
my_alarm.h	2429	0644	edit dl rm
my_apc.h	4747	0644	edit dl rm
my_atomic.h	7281	0644	edit dl rm
my_atomic_wrapper.h	3051	0644	edit dl rm
my_base.h	27750	0644	edit dl rm
my_bit.h	6196	0644	edit dl rm
my_bitmap.h	5502	0644	edit dl rm
my_check_opt.h	2618	0644	edit dl rm
my_compare.h	11194	0644	edit dl rm
my_counter.h	1721	0644	edit dl rm
my_cpu.h	4885	0644	edit dl rm
my_crypt.h	904	0644	edit dl rm
my_decimal.h	14504	0644	edit dl rm
my_default.h	1880	0644	edit dl rm
my_handler_errors.h	4882	0644	edit dl rm
my_json_writer.h	18706	0644	edit dl rm
my_libwrap.h	1183	0644	edit dl rm
my_md5.h	1486	0644	edit dl rm
my_minidump.h	848	0644	edit dl rm
my_nosys.h	1438	0644	edit dl rm
my_rdtsc.h	10119	0644	edit dl rm
my_rnd.h	1014	0644	edit dl rm
my_service_manager.h	2087	0644	edit dl rm
my_stacktrace.h	3215	0644	edit dl rm
my_stack_alloc.h	6493	0644	edit dl rm
my_time.h	10414	0644	edit dl rm
my_tree.h	3991	0644	edit dl rm
my_uctype.h	69528	0644	edit dl rm
my_user.h	1126	0644	edit dl rm
my_virtual_mem.h	1255	0644	edit dl rm
opt_histogram_json.h	4638	0644	edit dl rm
opt_range.h	65903	0644	edit dl rm
opt_subselect.h	14545	0644	edit dl rm
opt_trace.h	9505	0644	edit dl rm
opt_trace_context.h	3291	0644	edit dl rm
parse_file.h	4424	0644	edit dl rm
partition_element.h	5428	0644	edit dl rm
partition_info.h	19864	0644	edit dl rm
password.h	1621	0644	edit dl rm
pfs_file_provider.h	3153	0644	edit dl rm
pfs_idle_provider.h	1385	0644	edit dl rm
pfs_memory_provider.h	1626	0644	edit dl rm
pfs_metadata_provider.h	1898	0644	edit dl rm
pfs_socket_provider.h	2258	0644	edit dl rm
pfs_stage_provider.h	1556	0644	edit dl rm
pfs_statement_provider.h	4347	0644	edit dl rm
pfs_table_provider.h	2625	0644	edit dl rm
pfs_thread_provider.h	5560	0644	edit dl rm
pfs_transaction_provider.h	2846	0644	edit dl rm
privilege.h	28853	0644	edit dl rm
probes_mysql.h	973	0644	edit dl rm
probes_mysql_nodtrace.h	6087	0644	edit dl rm
procedure.h	6819	0644	edit dl rm
protocol.h	12537	0644	edit dl rm
proxy_protocol.h	548	0644	edit dl rm
queues.h	3477	0644	edit dl rm
records.h	3147	0644	edit dl rm
replication.h	16130	0644	edit dl rm
repl_failsafe.h	1585	0644	edit dl rm
rijndael.h	1711	0644	edit dl rm
rowid_filter.h	15474	0644	edit dl rm
rpl_constants.h	3357	0644	edit dl rm
rpl_filter.h	4774	0644	edit dl rm
rpl_gtid.h	29985	0644	edit dl rm
rpl_injector.h	9621	0644	edit dl rm
rpl_mi.h	16636	0644	edit dl rm
rpl_parallel.h	18228	0644	edit dl rm
rpl_record.h	1585	0644	edit dl rm
rpl_record_old.h	1407	0644	edit dl rm
rpl_reporting.h	3713	0644	edit dl rm
rpl_rli.h	36070	0644	edit dl rm
rpl_tblmap.h	3177	0644	edit dl rm
rpl_utility.h	9800	0644	edit dl rm
scheduler.h	3199	0644	edit dl rm
scope.h	4393	0644	edit dl rm
select_handler.h	2228	0644	edit dl rm
semisync.h	2287	0644	edit dl rm
semisync_master.h	25764	0644	edit dl rm
semisync_master_ack_receiver.h	8709	0644	edit dl rm
semisync_slave.h	3736	0644	edit dl rm
service_versions.h	2285	0644	edit dl rm
session_tracker.h	14275	0644	edit dl rm
set_var.h	17331	0644	edit dl rm
slave.h	12392	0644	edit dl rm
socketpair.h	842	0644	edit dl rm
source_revision.h	67	0644	edit dl rm
sp.h	22588	0644	edit dl rm
span.h	3931	0644	edit dl rm
spatial.h	22698	0644	edit dl rm
sp_cache.h	2037	0644	edit dl rm
sp_head.h	64917	0644	edit dl rm
sp_pcontext.h	25427	0644	edit dl rm
sp_rcontext.h	14441	0644	edit dl rm
sql_acl.h	14167	0644	edit dl rm
sql_admin.h	2915	0644	edit dl rm
sql_alloc.h	1732	0644	edit dl rm
sql_alter.h	15395	0644	edit dl rm
sql_analyse.h	11052	0644	edit dl rm
sql_analyze_stmt.h	12683	0644	edit dl rm
sql_array.h	6858	0644	edit dl rm
sql_audit.h	14162	0644	edit dl rm
sql_base.h	26050	0644	edit dl rm
sql_basic_types.h	9523	0644	edit dl rm
sql_binlog.h	895	0644	edit dl rm
sql_bitmap.h	7842	0644	edit dl rm
sql_bootstrap.h	1812	0644	edit dl rm
sql_cache.h	21676	0644	edit dl rm
sql_callback.h	1542	0644	edit dl rm
sql_class.h	271836	0644	edit dl rm
sql_cmd.h	5962	0644	edit dl rm
sql_command.h	4800	0644	edit dl rm
sql_connect.h	4087	0644	edit dl rm
sql_const.h	11630	0644	edit dl rm
sql_crypt.h	1437	0644	edit dl rm
sql_cte.h	16494	0644	edit dl rm
sql_cursor.h	4428	0644	edit dl rm
sql_db.h	2438	0644	edit dl rm
sql_debug.h	5727	0644	edit dl rm
sql_delete.h	1343	0644	edit dl rm
sql_derived.h	1289	0644	edit dl rm
sql_digest.h	3819	0644	edit dl rm
sql_digest_stream.h	1567	0644	edit dl rm
sql_do.h	954	0644	edit dl rm
sql_error.h	39843	0644	edit dl rm
sql_explain.h	30319	0644	edit dl rm
sql_expression_cache.h	4359	0644	edit dl rm
sql_get_diagnostics.h	7883	0644	edit dl rm
sql_handler.h	2910	0644	edit dl rm
sql_help.h	995	0644	edit dl rm
sql_hset.h	3401	0644	edit dl rm
sql_insert.h	5173	0644	edit dl rm
sql_i_s.h	8487	0644	edit dl rm
sql_join_cache.h	48659	0644	edit dl rm
sql_lex.h	174931	0644	edit dl rm
sql_lifo_buffer.h	9685	0644	edit dl rm
sql_limit.h	3187	0644	edit dl rm
sql_list.h	22391	0644	edit dl rm
sql_load.h	1276	0644	edit dl rm
sql_locale.h	2701	0644	edit dl rm
sql_manager.h	960	0644	edit dl rm
sql_mode.h	6735	0644	edit dl rm
sql_parse.h	8970	0644	edit dl rm
sql_partition.h	12674	0644	edit dl rm
sql_partition_admin.h	5940	0644	edit dl rm
sql_plist.h	7711	0644	edit dl rm
sql_plugin.h	7577	0644	edit dl rm
sql_plugin_compat.h	2237	0644	edit dl rm
sql_prepare.h	11409	0644	edit dl rm
sql_priv.h	18528	0644	edit dl rm
sql_profile.h	7816	0644	edit dl rm
sql_reload.h	1036	0644	edit dl rm
sql_rename.h	982	0644	edit dl rm
sql_repl.h	3045	0644	edit dl rm
sql_schema.h	3303	0644	edit dl rm
sql_select.h	89743	0644	edit dl rm
sql_sequence.h	5177	0644	edit dl rm
sql_servers.h	1777	0644	edit dl rm
sql_show.h	9819	0644	edit dl rm
sql_signal.h	3362	0644	edit dl rm
sql_sort.h	21964	0644	edit dl rm
sql_statistics.h	16504	0644	edit dl rm
sql_string.h	39009	0644	edit dl rm
sql_table.h	9812	0644	edit dl rm
sql_test.h	2665	0644	edit dl rm
sql_time.h	8505	0644	edit dl rm
sql_trigger.h	12332	0644	edit dl rm
sql_truncate.h	2079	0644	edit dl rm
sql_tvc.h	2418	0644	edit dl rm
sql_type.h	297272	0644	edit dl rm
sql_type_fixedbin.h	65578	0644	edit dl rm
sql_type_fixedbin_storage.h	5467	0644	edit dl rm
sql_type_geom.h	19039	0644	edit dl rm
sql_type_int.h	10001	0644	edit dl rm
sql_type_json.h	6155	0644	edit dl rm
sql_type_real.h	1257	0644	edit dl rm
sql_type_string.h	1629	0644	edit dl rm
sql_udf.h	4850	0644	edit dl rm
sql_union.h	1068	0644	edit dl rm
sql_update.h	1923	0644	edit dl rm
sql_view.h	2470	0644	edit dl rm
sql_window.h	6814	0644	edit dl rm
ssl_compat.h	3380	0644	edit dl rm
strfunc.h	2549	0644	edit dl rm
structs.h	29457	0644	edit dl rm
sys_vars_shared.h	2729	0644	edit dl rm
table.h	119009	0644	edit dl rm
table_cache.h	4232	0644	edit dl rm
threadpool.h	4810	0644	edit dl rm
threadpool_generic.h	3969	0644	edit dl rm
threadpool_winsockets.h	2290	0644	edit dl rm
thread_cache.h	5905	0644	edit dl rm
thr_alarm.h	2932	0644	edit dl rm
thr_lock.h	7350	0644	edit dl rm
thr_malloc.h	1202	0644	edit dl rm
thr_timer.h	1563	0644	edit dl rm
transaction.h	1466	0644	edit dl rm
tzfile.h	5014	0644	edit dl rm
tztime.h	3397	0644	edit dl rm
t_ctype.h	5639	0644	edit dl rm
uniques.h	4217	0644	edit dl rm
unireg.h	7722	0644	edit dl rm
vers_string.h	2543	0644	edit dl rm
violite.h	9956	0644	edit dl rm
waiting_threads.h	4532	0644	edit dl rm
welcome_copyright_notice.h	1218	0644	edit dl rm
winservice.h	6019	0644	edit dl rm
win_tzname_data.h	6506	0644	edit dl rm
wqueue.h	1565	0644	edit dl rm
wsrep.h	3308	0644	edit dl rm
wsrep_allowlist_service.h	1035	0644	edit dl rm
wsrep_applier.h	2703	0644	edit dl rm
wsrep_binlog.h	3551	0644	edit dl rm
wsrep_client_service.h	2602	0644	edit dl rm
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wsrep_mutex.h	1239	0644	edit dl rm
wsrep_mysqld.h	22006	0644	edit dl rm
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wsrep_on.h	1718	0644	edit dl rm
wsrep_priv.h	1634	0644	edit dl rm
wsrep_schema.h	5886	0644	edit dl rm
wsrep_server_service.h	3631	0644	edit dl rm
wsrep_server_state.h	2529	0644	edit dl rm
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wsrep_status.h	1816	0644	edit dl rm
wsrep_storage_service.h	1809	0644	edit dl rm
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wsrep_types.h	1110	0644	edit dl rm
wsrep_utils.h	10251	0644	edit dl rm
wsrep_var.h	4612	0644	edit dl rm
wsrep_xid.h	1509	0644	edit dl rm
xa.h	1845	0644	edit dl rm

Edit: /usr/include/mysql/server/private/my_decimal.h (14504B)

This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1335  USA */

/**
  @file

It is interface module to fixed precision decimals library.

Most functions use 'uint mask' as parameter, if during operation error
  which fit in this mask is detected then it will be processed automatically
  here. (errors are E_DEC_* constants, see include/decimal.h)

Most function are just inline wrappers around library calls
*/

#ifndef my_decimal_h
#define my_decimal_h

#include "sql_basic_types.h"

#if defined(MYSQL_SERVER) || defined(EMBEDDED_LIBRARY)
#include "sql_string.h"                         /* String */
#endif

C_MODE_START
#include <decimal.h>
#include <my_decimal_limits.h>
C_MODE_END

class String;
class Field;
typedef struct st_mysql_time MYSQL_TIME;

/**
  maximum size of packet length.
*/
#define DECIMAL_MAX_FIELD_SIZE DECIMAL_MAX_PRECISION

inline uint my_decimal_size(decimal_digits_t precision,
                            decimal_digits_t scale)
{
  /*
    Always allocate more space to allow library to put decimal point
    where it want
  */
  return decimal_size(precision, scale) + 1;
}

inline decimal_digits_t my_decimal_int_part(decimal_digits_t precision,
                                            decimal_digits_t decimals)
{
  return (decimal_digits_t) (precision -
                             ((decimals == DECIMAL_NOT_SPECIFIED) ? 0 :
                              decimals));
}

#ifndef MYSQL_CLIENT
int decimal_operation_results(int result, const char *value, const char *type);
#else
inline int decimal_operation_results(int result, const char *value,
                                     const char *type)
{
  return result;
}
#endif /*MYSQL_CLIENT*/

inline int check_result(uint mask, int result)
{
  if (result & mask)
    decimal_operation_results(result, "", "DECIMAL");
  return result;
}

/**
  my_decimal class limits 'decimal_t' type to what we need in MySQL.

It contains internally all necessary space needed by the instance so
  no extra memory is needed. One should call fix_buffer_pointer() function
  when he moves my_decimal objects in memory.
*/

class my_decimal :public decimal_t
{
  /*
    Several of the routines in strings/decimal.c have had buffer
    overrun/underrun problems. These are *not* caught by valgrind.
    To catch them, we allocate dummy fields around the buffer,
    and test that their values do not change.
   */
#if !defined(DBUG_OFF)
  int foo1;
#endif

decimal_digit_t buffer[DECIMAL_BUFF_LENGTH];

#if !defined(DBUG_OFF)
  int foo2;
  static const int test_value= 123;
#endif

public:

my_decimal(const my_decimal &rhs) : decimal_t(rhs)
  {
    init();
    for (uint i= 0; i < DECIMAL_BUFF_LENGTH; i++)
      buffer[i]= rhs.buffer[i];
  }

my_decimal& operator=(const my_decimal &rhs)
  {
    if (this == &rhs)
      return *this;
    decimal_t::operator=(rhs);
    for (uint i= 0; i < DECIMAL_BUFF_LENGTH; i++)
      buffer[i]= rhs.buffer[i];
    fix_buffer_pointer();
    return *this;
  }

void init()
  {
#if !defined(DBUG_OFF)
    foo1= test_value;
    foo2= test_value;
#endif
    len= DECIMAL_BUFF_LENGTH;
    buf= buffer;
    TRASH_ALLOC(buffer, sizeof(buffer));
  }

my_decimal()
  {
    init();
  }
  my_decimal(const uchar *bin, decimal_digits_t prec, decimal_digits_t scale)
  {
    init();
    check_result(E_DEC_FATAL_ERROR, bin2decimal(bin, this, prec, scale));
  }
  my_decimal(Field *field);
  ~my_decimal()
  {
    sanity_check();
  }

void sanity_check()
  {
    DBUG_SLOW_ASSERT(foo1 == test_value);
    DBUG_SLOW_ASSERT(foo2 == test_value);
  }

void fix_buffer_pointer() { buf= buffer; }

bool sign() const { return decimal_t::sign; }
  void sign(bool s) { decimal_t::sign= s; }
  decimal_digits_t precision() const { return (decimal_digits_t) (intg + frac); }
  void set_zero()
  {
    /*
      We need the up-cast here, since my_decimal has sign() member functions,
      which conflicts with decimal_t::sign
      (and decimal_make_zero is a macro, rather than a funcion).
    */
    decimal_make_zero(static_cast<decimal_t*>(this));
  }
  int cmp(const my_decimal *other) const
  {
    return decimal_cmp(this, other);
  }

#ifndef MYSQL_CLIENT
  bool to_bool() const
  {
    return !decimal_is_zero(this);
  }
  double to_double() const
  {
    double res;
    decimal2double(this, &res);
    return res;
  }
  longlong to_longlong(bool unsigned_flag) const;
  /*
    Return the value as a signed or unsigned longlong, depending on the sign.
    - Positive values are returned as unsigned.
    - Negative values are returned as signed.
    This is used by bit SQL operators: | & ^ ~
    as well as by the SQL function BIT_COUNT().
  */
  longlong to_xlonglong() const
  { return to_longlong(!sign()); }

// Convert to string returning decimal2string() error code
  int to_string_native(String *to, uint prec, uint dec, char filler,
                       uint mask= E_DEC_FATAL_ERROR) const;
  // Convert to string returning the String pointer
  String *to_string(String *to, uint prec, uint dec, char filler) const
  {
    return to_string_native(to, prec, dec, filler) ? NULL : to;
  }
  String *to_string(String *to) const
  {
    return to_string(to, 0, 0, 0);
  }
  String *to_string_round(String *to, decimal_digits_t scale,
                          my_decimal *round_buff) const
  {
    (void) round_to(round_buff, scale, HALF_UP); // QQ: check result?
    return round_buff->to_string(to);
  }
  /* Scale can be negative here when called from truncate() */
  int round_to(my_decimal *to, int scale, decimal_round_mode mode,
               int mask= E_DEC_FATAL_ERROR) const
  {
    return check_result(mask, decimal_round(this, to, scale, mode));
  }
  int to_binary(uchar *bin, int prec, decimal_digits_t scale,
                uint mask= E_DEC_FATAL_ERROR) const;
#endif
  /** Swap two my_decimal values */
  void swap(my_decimal &rhs)
  {
    swap_variables(my_decimal, *this, rhs);
  }
};

#ifndef DBUG_OFF
void print_decimal(const my_decimal *dec);
void print_decimal_buff(const my_decimal *dec, const uchar* ptr, int length);
const char *dbug_decimal_as_string(char *buff, const my_decimal *val);
#else
#define dbug_decimal_as_string(A) NULL
#endif

bool str_set_decimal(uint mask, const my_decimal *val, uint fixed_prec,
                     uint fixed_dec, char filler, String *str,
                     CHARSET_INFO *cs);

extern my_decimal decimal_zero;

inline
void max_my_decimal(my_decimal *to, decimal_digits_t precision,
                    decimal_digits_t frac)
{
  DBUG_ASSERT((precision <= DECIMAL_MAX_PRECISION)&&
              (frac <= DECIMAL_MAX_SCALE));
  max_decimal(precision, frac, to);
}

inline void max_internal_decimal(my_decimal *to)
{
  max_my_decimal(to, DECIMAL_MAX_PRECISION, 0);
}

inline int check_result_and_overflow(uint mask, int result, my_decimal *val)
{
  if (check_result(mask, result) & E_DEC_OVERFLOW)
  {
    bool sign= val->sign();
    val->fix_buffer_pointer();
    max_internal_decimal(val);
    val->sign(sign);
  }
  return result;
}

inline decimal_digits_t my_decimal_length_to_precision(decimal_digits_t length,
                                                       decimal_digits_t scale,
                                                       bool unsigned_flag)
{
  /* Subtract the dot and the sign; clamp to a minimum of 1. */
  DBUG_ASSERT(length || !scale);
  return (decimal_digits_t) MY_MAX(1, (int)length - (scale>0) - !unsigned_flag);
}

inline decimal_digits_t
my_decimal_precision_to_length_no_truncation(decimal_digits_t precision,
                                             decimal_digits_t scale,
                                             bool unsigned_flag)
{
  /*
    precision 0 (only from direct callers; my_decimal_length_to_precision()
    no longer emits it) means length was 0 too, so ignore unsigned_flag.
  */
  DBUG_ASSERT(precision || !scale);
  return (decimal_digits_t)(precision + (scale > 0 ? 1 : 0) +
                            (unsigned_flag || !precision ? 0 : 1));
}

inline decimal_digits_t
my_decimal_precision_to_length(decimal_digits_t precision,
                               decimal_digits_t scale,
                               bool unsigned_flag)
{
  /*
    precision 0 (only from direct callers; my_decimal_length_to_precision()
    no longer emits it) means length was 0 too, so ignore unsigned_flag.
  */
  DBUG_ASSERT(precision || !scale);
  set_if_smaller(precision, DECIMAL_MAX_PRECISION);
  return my_decimal_precision_to_length_no_truncation(precision, scale,
                                                      unsigned_flag);
}

inline
uint my_decimal_string_length(const my_decimal *d)
{
  /* length of string representation including terminating '\0' */
  return decimal_string_size(d);
}

inline
uint my_decimal_max_length(const my_decimal *d)
{
  /* -1 because we do not count \0 */
  return decimal_string_size(d) - 1;
}

inline
uint my_decimal_get_binary_size(decimal_digits_t precision,
                                decimal_digits_t scale)
{
  return decimal_bin_size(precision, scale);
}

inline
void my_decimal2decimal(const my_decimal *from, my_decimal *to)
{
  *to= *from;
}

inline
int binary2my_decimal(uint mask, const uchar *bin, my_decimal *d,
                      decimal_digits_t prec, decimal_digits_t scale)
{
  return check_result(mask, bin2decimal(bin, d, prec, scale));
}

inline
int my_decimal_set_zero(my_decimal *d)
{
  d->set_zero();
  return 0;
}

inline
bool my_decimal_is_zero(const my_decimal *decimal_value)
{
  return decimal_is_zero(decimal_value);
}

inline bool str_set_decimal(const my_decimal *val, String *str,
                            CHARSET_INFO *cs)
{
  return str_set_decimal(E_DEC_FATAL_ERROR, val, 0, 0, 0, str, cs);
}

bool my_decimal2seconds(const my_decimal *d, ulonglong *sec,
                        ulong *microsec, ulong *nanosec);

my_decimal *seconds2my_decimal(bool sign, ulonglong sec, ulong microsec,
                               my_decimal *d);

#define TIME_to_my_decimal(TIME, DECIMAL)                       \
     seconds2my_decimal((TIME)->neg, TIME_to_ulonglong(TIME),   \
                        (TIME)->second_part, (DECIMAL))

int my_decimal2int(uint mask, const decimal_t *d, bool unsigned_flag,
		   longlong *l, decimal_round_mode round_type= HALF_UP);

inline
int my_decimal2double(uint, const decimal_t *d, double *result)
{
  /* No need to call check_result as this will always succeed */
  return decimal2double(d, result);
}

inline
int str2my_decimal(uint mask, const char *str, my_decimal *d, char **end)
{
  return check_result_and_overflow(mask, string2decimal(str, d, end), d);
}

int str2my_decimal(uint mask, const char *from, size_t length,
                   CHARSET_INFO *charset, my_decimal *decimal_value,
                   const char **end);

inline int str2my_decimal(uint mask, const char *from, size_t length,
                          CHARSET_INFO *charset, my_decimal *decimal_value)
{
  const char *end;
  return str2my_decimal(mask, from, length, charset, decimal_value, &end);
}

#if defined(MYSQL_SERVER) || defined(EMBEDDED_LIBRARY)
inline
int string2my_decimal(uint mask, const String *str, my_decimal *d)
{
  const char *end;
  return str2my_decimal(mask, str->ptr(), str->length(), str->charset(),
                        d, &end);
}

my_decimal *date2my_decimal(const MYSQL_TIME *ltime, my_decimal *dec);

#endif /*defined(MYSQL_SERVER) || defined(EMBEDDED_LIBRARY) */

inline
int double2my_decimal(uint mask, double val, my_decimal *d)
{
  return check_result_and_overflow(mask, double2decimal(val, d), d);
}

inline
int int2my_decimal(uint mask, longlong i, my_bool unsigned_flag, my_decimal *d)
{
  return check_result(mask, (unsigned_flag ?
			     ulonglong2decimal((ulonglong)i, d) :
			     longlong2decimal(i, d)));
}

inline
void decimal2my_decimal(decimal_t *from, my_decimal *to)
{
  DBUG_ASSERT(to->len >= from->len);
  to->intg= from->intg;
  to->frac= from->frac;
  to->sign(from->sign);
  memcpy(to->buf, from->buf, to->len*sizeof(decimal_digit_t));
}

inline
void my_decimal_neg(decimal_t *arg)
{
  if (decimal_is_zero(arg))
  {
    arg->sign= 0;
    return;
  }
  decimal_neg(arg);
}

inline
int my_decimal_add(uint mask, my_decimal *res, const my_decimal *a,
		   const my_decimal *b)
{
  return check_result_and_overflow(mask,
                                   decimal_add(a, b, res),
                                   res);
}

inline
int my_decimal_sub(uint mask, my_decimal *res, const my_decimal *a,
		   const my_decimal *b)
{
  return check_result_and_overflow(mask,
                                   decimal_sub(a, b, res),
                                   res);
}

inline
int my_decimal_mul(uint mask, my_decimal *res, const my_decimal *a,
		   const my_decimal *b)
{
  return check_result_and_overflow(mask,
                                   decimal_mul(a, b, res),
                                   res);
}

inline
int my_decimal_div(uint mask, my_decimal *res, const my_decimal *a,
		   const my_decimal *b, int div_scale_inc)
{
  return check_result_and_overflow(mask,
                                   decimal_div(a, b, res, div_scale_inc),
                                   res);
}

inline
int my_decimal_mod(uint mask, my_decimal *res, const my_decimal *a,
		   const my_decimal *b)
{
  return check_result_and_overflow(mask,
                                   decimal_mod(a, b, res),
                                   res);
}

/**
  @return
    -1 if a<b, 1 if a>b and 0 if a==b
*/
inline
int my_decimal_cmp(const my_decimal *a, const my_decimal *b)
{
  return decimal_cmp(a, b);
}

inline
int my_decimal_intg(const my_decimal *a)
{
  return decimal_intg(a);
}

void my_decimal_trim(ulonglong *precision, decimal_digits_t *scale);

#endif /*my_decimal_h*/

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