my_decimal.cc File Reference

#include "my_decimal.h"
#include "my_config.h"
#include <cstdio>
#include <sys/time.h>
#include "decimal.h"
#include "my_dbug.h"
#include "my_sys.h"
#include "my_time.h"
#include "mysql/strings/m_ctype.h"
#include "mysql_time.h"
#include "mysqld_error.h"
#include "sql/current_thd.h"
#include "sql/derror.h"
#include "sql/field.h"
#include "sql/sql_const.h"
#include "sql/sql_error.h"

Macros
#define	DIG_PER_DEC1   9
#define	ROUND_UP(X)   (((X) + DIG_PER_DEC1 - 1) / DIG_PER_DEC1)

Functions
int	my_decimal2string (uint mask, const my_decimal *d, uint fixed_prec, uint fixed_dec, String *str)
	Converting decimal to string. More...
bool	str_set_decimal (uint mask, const my_decimal *val, String *str, const CHARSET_INFO *cs, uint decimals)
	Converting decimal to string with character set conversion. More...
int	my_decimal2binary (uint mask, const my_decimal *d, uchar *bin, int prec, int scale)
int	str2my_decimal (uint mask, const char *from, size_t length, const CHARSET_INFO *charset, my_decimal *decimal_value)
static my_decimal *	lldiv_t2my_decimal (const lldiv_t *lld, bool neg, my_decimal *dec)
	Convert lldiv_t value to my_decimal value. More...
my_decimal *	date2my_decimal (const MYSQL_TIME *ltime, my_decimal *dec)
	Convert datetime value to my_decimal in format YYYYMMDDhhmmss.ffffff. More...
my_decimal *	time2my_decimal (const Time_val *time, my_decimal *dec)
	Convert time value to my_decimal in format hhmmss.ffffff. More...
my_decimal *	timeval2my_decimal (const my_timeval *tm, my_decimal *dec)
	Convert timeval value to my_decimal. More...
void	my_decimal_trim (ulong *precision, uint *scale)
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)

Macro Definition Documentation

DIG_PER_DEC1

#define DIG_PER_DEC1   9

ROUND_UP

#define ROUND_UP

(

X

)

(((X) + DIG_PER_DEC1 - 1) / DIG_PER_DEC1)

Function Documentation

date2my_decimal()

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

Convert datetime value to my_decimal in format YYYYMMDDhhmmss.ffffff.

Parameters

ltime	Date value to convert from.
dec	Decimal value to convert to.

dbug_decimal_as_string()

const char * dbug_decimal_as_string	(	char *	buff,
		const my_decimal *	val
	)

lldiv_t2my_decimal()

static my_decimal * lldiv_t2my_decimal ( const lldiv_t *  lld, bool  neg, my_decimal *  dec  )

static

Convert lldiv_t value to my_decimal value.

Integer part of the result is set to lld->quot. Fractional part of the result is set to lld->rem divided to 1000000000.

Parameters

	lld	The lldiv_t variable to convert from.
	neg	Sign flag (negative, 0 positive).
[out]	dec	Decimal number to convert to.

my_decimal2binary()

int my_decimal2binary	(	uint	mask,
		const my_decimal *	d,
		uchar *	bin,
		int	prec,
		int	scale
	)

my_decimal2string()

int my_decimal2string	(	uint	mask,
		const my_decimal *	d,
		uint	fixed_prec,
		uint	fixed_dec,
		String *	str
	)

Converting decimal to string.

Convert given my_decimal to String; allocate buffer as needed.

Parameters

[in]	mask	what problems to warn on (mask of E_DEC_* values)
[in]	d	the decimal to print
[in]	fixed_prec	overall number of digits if ZEROFILL, 0 otherwise
[in]	fixed_dec	number of decimal places (if fixed_prec != 0)
[out]	str	where to store the resulting string

Returns

error code

Return values

E_DEC_OK	ok
E_DEC_TRUNCATED	truncated
E_DEC_OVERFLOW	overflow
E_DEC_OOM	out-of-memory

my_decimal_trim()

void my_decimal_trim	(	ulong *	precision,
		uint *	scale
	)

print_decimal()

void print_decimal

(

const my_decimal *

dec

)

print_decimal_buff()

void print_decimal_buff	(	const my_decimal *	dec,
		const uchar *	ptr,
		int	length
	)

str2my_decimal()

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

str_set_decimal()

bool str_set_decimal	(	uint	mask,
		const my_decimal *	val,
		String *	str,
		const CHARSET_INFO *	cs,
		uint	decimals
	)

Converting decimal to string with character set conversion.

Convert given my_decimal to String; allocate buffer as needed.

Parameters

[in]	mask	what problems to warn on (mask of E_DEC_* values)
[in]	val	the decimal to print
[out]	str	where to store the resulting string
[in]	cs	character set
[in]	decimals	round to desired number of decimals

Returns

error code

Return values

E_DEC_OK	ok
E_DEC_TRUNCATED	truncated
E_DEC_OVERFLOW	overflow
E_DEC_OOM	out-of-memory

Would be great to make it a method of the String class, but this would need to include my_decimal.h from sql_string.h and sql_string.cc, which is not desirable.

time2my_decimal()

my_decimal * time2my_decimal	(	const Time_val *	time,
		my_decimal *	dec
	)

Convert time value to my_decimal in format hhmmss.ffffff.

Parameters

time	Date value to convert from.
dec	Decimal value to convert to.

timeval2my_decimal()

my_decimal * timeval2my_decimal	(	const my_timeval *	tm,
		my_decimal *	dec
	)

Convert timeval value to my_decimal.