numeric Class Reference

float number without restrictions on precision and scale More...

#include <numeric.h>

List of all members.

Public Member Functions
	numeric (byte_allocator *allocator_=0)
	default constructor
	~numeric ()
	destructor
	numeric (sb8_t x, byte_allocator *allocator_=0)
	constructor
	numeric (sb4_t x, byte_allocator *allocator_=0)
	constructor
	numeric (float x, byte_allocator *allocator_=0)
	constructor
	numeric (double x, byte_allocator *allocator_=0)
	constructor
	numeric (const char *x, size_t len, numeric_radix radix=RADIX10, byte_allocator *allocator_=0)
	constructor
	numeric (const char *x, size_t len, char delimeter, byte_allocator *allocator_=0)
	constructor
	numeric (const wchar_t *x, size_t len, wchar_t delimeter, byte_allocator *allocator_=0)
	constructor
	numeric (const numeric &x)
	copy constructor
numeric &	operator= (const numeric &x)
	assign operator
numeric &	operator++ ()
	operator++
numeric	operator++ (int)
	operator++(int)
numeric &	operator-- ()
	operator--
numeric	operator-- (int)
	operator--(int)
numeric &	operator+= (const numeric &x)
	operator+=
numeric &	operator-= (const numeric &x)
	operator-=
numeric &	operator*= (const numeric &x)
	operator *=
numeric &	operator/= (const numeric &x)
	operator /=
numeric &	operator%= (const numeric &x)
	operator =
bool	operator== (const numeric &x)
	equal operator
bool	operator!= (const numeric &x)
	non equal operator
bool	operator< (const numeric &x)
	operator<
bool	operator<= (const numeric &x)
	operator <=
bool	operator> (const numeric &x)
	operator>
bool	operator>= (const numeric &x)
	operator >=
bool	sign () const
	get sign, return true for negative numbers
size_t	scale () const
	get scale
bool	is_zero () const
	check if number is zero
size_t	precision () const
	get precision
bool	format (char *buf, char delimeter= '.') const
	output numeric using provided buffer and delimeter buffer has to have enough room to accomodate all bytes precision + 1 (delimeter) + 1 (sign) + 1 (leading zero)
bool	persist (ub1_t *buf, size_t size) const
	output numeric in binary format
bool	parse (const ub1_t *buf)
	parses binary buffer extracting numeric
bool	persist_orcl (ub1_t *buf) const
	outputs numeric in binary oracle like format NUMERIC type
bool	parse_orcl (const ub1_t *buf)
	parses external oracle like binary buffer extracting numeric
bool	persist_sql (ub1_t &sign, ub1_t *buf, ub1_t &precision, sb1_t &scale) const
	outputs numeric in binary ms sql like format SQL_NUMERIC type
bool	parse_sql (ub1_t sign, const ub1_t *buf, ub1_t precision, sb1_t scale)
	parses external ms sql like binary buffer extracting numeric
size_t	orcl_len () const
	gets the minimum length for oracle output
Static Public Member Functions
static const numeric &	zero ()
	static zero
static const numeric &	one ()
	static one
static int	compare_orcl (const ub1_t *x, const ub1_t *y)
	compares binaries in oracle format
Static Public Attributes
static const numeric_radix	_radix = RADIX10
	radix 10
Private Member Functions
	numeric (ub1_t x, size_t length, byte_allocator *allocator_=0)
	private constructor
	numeric (const ub1_t *x, size_t length, byte_allocator *allocator_=0)
	private constructor
numeric &	negative ()
	makes numeric negative
numeric &	cutjunk ()
	removes unused tailing or leading zeroes
numeric &	round (size_t scale_)
	rounds up to the scale
numeric &	operator<< (int shift)
	shifts buffer to the left
numeric &	operator>> (int shift)
	shifts buffer to the right
numeric &	scan (const char *x, size_t len, char delimeter)
	scans external string with specified delimeter
numeric &	scan (const wchar_t *x, size_t len, wchar_t delimeter)
	scans external wide string with specified delimeter
Static Private Member Functions
static numeric &	plus (numeric &res, const numeric &x, const numeric &y)
	returns x+y
static numeric &	minus (numeric &res, const numeric &x, const numeric &y)
	returns x-y
static numeric &	multiply (numeric &res, const numeric &x, const numeric &y)
	returns x*y
static numeric &	divide (numeric &res, numeric &reminder, const numeric &dividend, const numeric &divider)
	returns x/y
static int	compare (const numeric &x, const numeric &y)
	compares x, y
Private Attributes
room_array< ub1_t >	_vec
	internal buffer
size_t	_scale
	scale
size_t	_precision
	precision
bool	_sign
	sign, true means negative
Friends
numeric	operator+ (const numeric &x, const numeric &y)
	operator+
numeric	operator- (const numeric &x, const numeric &y)
	operator-
numeric	operator* (const numeric &x, const numeric &y)
	operator*
numeric	operator/ (const numeric &x, const numeric &y)
	operator/
numeric	operator% (const numeric &x, const numeric &y)
	operator%

---

Detailed Description

float number without restrictions on precision and scale

Definition at line 39 of file numeric.h.

---

Constructor & Destructor Documentation

numeric::numeric

(

byte_allocator *

allocator_ = 0

)

default constructor

Parameters:

allocator_

optional external allocator

Definition at line 52 of file numeric.cpp.

References _vec.

Referenced by numeric(), parse_orcl(), parse_sql(), and scan().

numeric::~numeric

(

)

destructor

Definition at line 58 of file numeric.cpp.

numeric::numeric	(	sb8_t	x,
		byte_allocator *	allocator_ = 0
	)			[explicit]

constructor

Parameters:

x	64 bits integer
allocator_	optional external allocator

Definition at line 87 of file numeric.cpp.

References _vec, I64d, scan(), and str_template::strprint().

numeric::numeric	(	sb4_t	x,
		byte_allocator *	allocator_ = 0
	)			[explicit]

constructor

Parameters:

x	32 bits integer
allocator_	optional external allocator

Definition at line 74 of file numeric.cpp.

References _precision, _radix, _sign, and _vec.

numeric::numeric	(	float	x,
		byte_allocator *	allocator_ = 0
	)			[explicit]

constructor

Parameters:

x	32 bits float
allocator_	optional external allocator

Definition at line 96 of file numeric.cpp.

References _vec, scan(), and str_template::strprint().

numeric::numeric	(	double	x,
		byte_allocator *	allocator_ = 0
	)			[explicit]

constructor

Parameters:

x	64 bits float
allocator_	optional external allocator

Definition at line 106 of file numeric.cpp.

References _vec, scan(), and str_template::strprint().

numeric::numeric	(	const char *	x,
		size_t	len,
		numeric_radix	radix = RADIX10,
		byte_allocator *	allocator_ = 0
	)			[explicit]

constructor

Parameters:

x	input string, no delimeters
len	string length
radix	radix
allocator_	optional external allocator

Definition at line 116 of file numeric.cpp.

References _sign, _vec, numeric(), os_minus_one, RADIX10, RADIX16, str_template::strlen(), and symbol_to_byte().

numeric::numeric	(	const char *	x,
		size_t	len,
		char	delimeter,
		byte_allocator *	allocator_ = 0
	)			[explicit]

constructor

Parameters:

x	input string
len	string length
delimeter	delimeter '.', ',', etc
allocator_	optional external allocator

Definition at line 149 of file numeric.cpp.

References scan().

numeric::numeric	(	const wchar_t *	x,
		size_t	len,
		wchar_t	delimeter,
		byte_allocator *	allocator_ = 0
	)			[explicit]

constructor

Parameters:

x	input wide string
len	string length
delimeter	delimeter L'.', L',', etc
allocator_	optional external allocator

Definition at line 155 of file numeric.cpp.

References scan().

numeric::numeric

(

const numeric &

x

)

copy constructor

Definition at line 832 of file numeric.cpp.

numeric::numeric	(	ub1_t	x,
		size_t	length,
		byte_allocator *	allocator_ = 0
	)			[private]

private constructor

Parameters:

x	input value
length	reserved length
allocator_	optional external allocator

Definition at line 62 of file numeric.cpp.

References _vec.

numeric::numeric	(	const ub1_t *	x,
		size_t	length,
		byte_allocator *	allocator_ = 0
	)			[private]

private constructor

Parameters:

x	input buffer
length	buffer length
allocator_	optional external allocator

Definition at line 68 of file numeric.cpp.

References _vec.

---

Member Function Documentation

numeric & numeric::operator=

(

const numeric &

x

)

assign operator

Definition at line 838 of file numeric.cpp.

References _precision, _scale, _sign, and _vec.

numeric & numeric::operator++

(

)

operator++

Definition at line 707 of file numeric.cpp.

References one().

numeric numeric::operator++

(

int

)

operator++(int)

Definition at line 713 of file numeric.cpp.

References one().

numeric & numeric::operator--

(

)

operator--

Definition at line 721 of file numeric.cpp.

References one().

numeric numeric::operator--

(

int

)

operator--(int)

Definition at line 727 of file numeric.cpp.

References one().

numeric & numeric::operator+=

(

const numeric &

x

)

operator+=

Definition at line 735 of file numeric.cpp.

References _sign, _vec, compare(), cutjunk(), minus(), and plus().

numeric & numeric::operator-=

(

const numeric &

x

)

operator-=

Definition at line 769 of file numeric.cpp.

References _sign, _vec, compare(), cutjunk(), minus(), and plus().

numeric & numeric::operator*=

(

const numeric &

x

)

operator *=

Definition at line 803 of file numeric.cpp.

References _sign, _vec, cutjunk(), and multiply().

numeric & numeric::operator/=

(

const numeric &

x

)

operator /=

Definition at line 812 of file numeric.cpp.

References _sign, _vec, cutjunk(), and divide().

numeric & numeric::operator%=

(

const numeric &

x

)

operator =

Definition at line 822 of file numeric.cpp.

References _sign, _vec, cutjunk(), and divide().

bool numeric::operator==

(

const numeric &

x

)

equal operator

Definition at line 923 of file numeric.cpp.

References _sign, and compare().

bool numeric::operator!=

(

const numeric &

x

)

non equal operator

Definition at line 929 of file numeric.cpp.

bool numeric::operator<

(

const numeric &

x

)

operator<

Definition at line 935 of file numeric.cpp.

References _sign, and compare().

bool numeric::operator<=

(

const numeric &

x

)

operator <=

Definition at line 941 of file numeric.cpp.

References _sign, and compare().

bool numeric::operator>

(

const numeric &

x

)

operator>

Definition at line 947 of file numeric.cpp.

bool numeric::operator>=

(

const numeric &

x

)

operator >=

Definition at line 953 of file numeric.cpp.

bool numeric::sign

(

)

const

get sign, return true for negative numbers

Definition at line 663 of file numeric.cpp.

References _sign.

Referenced by dbserver_impl::get_param_as_numeric(), memlookup::get_value_as_numeric(), terimber_db_value_vector_impl::get_value_as_numeric(), dbserver_impl::get_value_as_numeric(), and persist_orcl().

size_t numeric::scale

(

)

const

get scale

Definition at line 669 of file numeric.cpp.

References _scale.

Referenced by dbserver_impl::get_param_as_numeric(), memlookup::get_value_as_numeric(), terimber_db_value_vector_impl::get_value_as_numeric(), dbserver_impl::get_value_as_numeric(), minus(), orcl_len(), plus(), odbc_dbserver::v_bind_one_param(), and mysql_dbserver::v_bind_one_param().

bool numeric::is_zero

(

)

const

check if number is zero

Definition at line 697 of file numeric.cpp.

References _precision, and _vec.

Referenced by divide(), dbserver_impl::get_param_as_numeric(), memlookup::get_value_as_numeric(), terimber_db_value_vector_impl::get_value_as_numeric(), dbserver_impl::get_value_as_numeric(), orcl_len(), persist_orcl(), and persist_sql().

size_t numeric::precision

(

)

const

get precision

Definition at line 675 of file numeric.cpp.

References _precision.

Referenced by dbserver_impl::get_param_as_numeric(), memlookup::get_value_as_numeric(), terimber_db_value_vector_impl::get_value_as_numeric(), dbserver_impl::get_value_as_numeric(), minus(), orcl_len(), persist_value(), plus(), odbc_dbserver::v_bind_one_param(), and mysql_dbserver::v_bind_one_param().

bool numeric::format	(	char *	buf,
		char	delimeter = '.'
	)			const

output numeric using provided buffer and delimeter buffer has to have enough room to accomodate all bytes precision + 1 (delimeter) + 1 (sign) + 1 (leading zero)

Definition at line 162 of file numeric.cpp.

References _precision, _scale, _sign, _vec, byte_to_symbol(), compare(), and zero().

Referenced by dbserver_impl::get_param_as_numeric(), memlookup::get_value_as_numeric(), terimber_db_value_vector_impl::get_value_as_numeric(), dbserver_impl::get_value_as_numeric(), persist_value(), odbc_dbserver::v_bind_one_param(), and mysql_dbserver::v_bind_one_param().

bool numeric::persist	(	ub1_t *	buf,
		size_t	size
	)			const

output numeric in binary format

Definition at line 193 of file numeric.cpp.

References _precision, _scale, _sign, and _vec.

bool numeric::parse

(

const ub1_t *

buf

)

parses binary buffer extracting numeric

Definition at line 215 of file numeric.cpp.

References _precision, _scale, _sign, and _vec.

bool numeric::persist_orcl

(

ub1_t *

buf

)

const

outputs numeric in binary oracle like format NUMERIC type

Definition at line 482 of file numeric.cpp.

References _precision, _scale, _vec, is_zero(), and sign().

Referenced by variant_factory::clone(), copy_db_row(), parse_value(), binder::set_as_decimal(), binder::set_as_numeric(), orcl_dbserver::v_bind_one_param(), orcl_dbserver::v_convert_one_value(), odbc_dbserver::v_convert_one_value(), mysql_dbserver::v_convert_one_value(), orcl_dbserver::v_rebind_one_param(), odbc_dbserver::v_rebind_one_param(), and mysql_dbserver::v_rebind_one_param().

bool numeric::parse_orcl

(

const ub1_t *

buf

)

parses external oracle like binary buffer extracting numeric

Definition at line 276 of file numeric.cpp.

References _vec, negative(), numeric(), and zero().

Referenced by variant_factory::clone(), binder::clone(), dbserver_impl::get_param_as_numeric(), memlookup::get_value_as_numeric(), terimber_db_value_vector_impl::get_value_as_numeric(), dbserver_impl::get_value_as_numeric(), persist_value(), binder::set_as_decimal(), binder::set_as_numeric(), orcl_dbserver::v_bind_one_param(), odbc_dbserver::v_bind_one_param(), mysql_dbserver::v_bind_one_param(), orcl_dbserver::v_convert_one_value(), and orcl_dbserver::v_rebind_one_param().

bool numeric::persist_sql	(	ub1_t &	sign,
		ub1_t *	buf,
		ub1_t &	precision,
		sb1_t &	scale
	)			const

outputs numeric in binary ms sql like format SQL_NUMERIC type

Definition at line 607 of file numeric.cpp.

References _precision, _scale, _sign, _vec, and is_zero().

bool numeric::parse_sql	(	ub1_t	sign,
		const ub1_t *	buf,
		ub1_t	precision,
		sb1_t	scale
	)

parses external ms sql like binary buffer extracting numeric

Definition at line 631 of file numeric.cpp.

References _scale, _sign, numeric(), and zero().

size_t numeric::orcl_len

(

)

const

gets the minimum length for oracle output

Definition at line 589 of file numeric.cpp.

References _precision, _scale, is_zero(), precision(), and scale().

Referenced by variant_factory::clone(), binder::clone(), copy_db_row(), parse_value(), binder::set_as_decimal(), binder::set_as_numeric(), orcl_dbserver::v_bind_one_param(), orcl_dbserver::v_convert_one_value(), odbc_dbserver::v_convert_one_value(), mysql_dbserver::v_convert_one_value(), orcl_dbserver::v_rebind_one_param(), odbc_dbserver::v_rebind_one_param(), and mysql_dbserver::v_rebind_one_param().

const numeric & numeric::zero

(

)

[static]

static zero

Definition at line 682 of file numeric.cpp.

Referenced by divide(), format(), parse_orcl(), and parse_sql().

const numeric & numeric::one

(

)

[static]

static one

Definition at line 690 of file numeric.cpp.

Referenced by operator++(), and operator--().

int numeric::compare_orcl	(	const ub1_t *	x,
		const ub1_t *	y
	)			[static]

compares binaries in oracle format

Parameters:

x	first argument
y	second argument

Definition at line 352 of file numeric.cpp.

Referenced by operator_less().

numeric & numeric::plus	(	numeric &	res,
		const numeric &	x,
		const numeric &	y
	)			[static, private]

returns x+y

Parameters:

res	result
x	first argument
y	second argument

Definition at line 962 of file numeric.cpp.

References _precision, _radix, _scale, _vec, precision(), and scale().

Referenced by operator+=(), and operator-=().

numeric & numeric::minus	(	numeric &	res,
		const numeric &	x,
		const numeric &	y
	)			[static, private]

returns x-y

Parameters:

res	result
x	first argument
y	second argument

Definition at line 1016 of file numeric.cpp.

References _precision, _radix, _scale, _vec, precision(), and scale().

Referenced by operator+=(), and operator-=().

numeric & numeric::multiply	(	numeric &	res,
		const numeric &	x,
		const numeric &	y
	)			[static, private]

returns x*y

Parameters:

res	result
x	first argument
y	second argument

Definition at line 1069 of file numeric.cpp.

References _precision, _radix, _scale, and _vec.

Referenced by operator*=().

numeric & numeric::divide	(	numeric &	res,
		numeric &	reminder,
		const numeric &	dividend,
		const numeric &	divider
	)			[static, private]

returns x/y

Parameters:

res	result
reminder	reminder
dividend	dividend
divider	divider

Definition at line 1130 of file numeric.cpp.

References _precision, _scale, exception::_throw(), _vec, compare(), cutjunk(), is_zero(), and zero().

Referenced by operator%=(), and operator/=().

int numeric::compare	(	const numeric &	x,
		const numeric &	y
	)			[static, private]

compares x, y

Parameters:

x	first argument
y	second argument

Definition at line 1228 of file numeric.cpp.

References _precision, _scale, and _vec.

Referenced by divide(), format(), operator+=(), operator-=(), operator<(), operator<=(), and operator==().

numeric & numeric::negative

(

)

[private]

makes numeric negative

Definition at line 656 of file numeric.cpp.

References _sign.

Referenced by parse_orcl().

numeric & numeric::cutjunk

(

)

[private]

removes unused tailing or leading zeroes

Definition at line 851 of file numeric.cpp.

References _precision, _scale, and _vec.

Referenced by divide(), operator%(), operator%=(), operator*(), operator*=(), operator+(), operator+=(), operator-(), operator-=(), operator/(), operator/=(), and scan().

numeric& numeric::round

(

size_t

scale_

)

[private]

rounds up to the scale

Parameters:

scale_

scale

numeric & numeric::operator<<

(

int

shift

)

[private]

shifts buffer to the left

Definition at line 879 of file numeric.cpp.

References _precision, _scale, and _vec.

numeric & numeric::operator>>

(

int

shift

)

[private]

shifts buffer to the right

Definition at line 902 of file numeric.cpp.

References _precision, _scale, and _vec.

numeric & numeric::scan	(	const char *	x,
		size_t	len,
		char	delimeter
	)			[private]

scans external string with specified delimeter

Parameters:

x	input string
len	string length
delimeter	delimeter

Definition at line 1305 of file numeric.cpp.

References _precision, _scale, _sign, _vec, cutjunk(), numeric(), RADIX16, and symbol_to_byte().

Referenced by numeric().

numeric & numeric::scan	(	const wchar_t *	x,
		size_t	len,
		wchar_t	delimeter
	)			[private]

scans external wide string with specified delimeter

Parameters:

x	input wide string
len	string length
delimeter	delimeter

Definition at line 1355 of file numeric.cpp.

References _precision, _scale, _sign, _vec, numeric(), RADIX16, and symbol_to_byte().

---

Friends And Related Function Documentation

numeric operator+	(	const numeric &	x,
		const numeric &	y
	)			[friend]

operator+

Parameters:

x	first argument
y	second argument

Definition at line 1268 of file numeric.cpp.

numeric operator-	(	const numeric &	x,
		const numeric &	y
	)			[friend]

operator-

Parameters:

x	first argument
y	second argument

Definition at line 1275 of file numeric.cpp.

numeric operator*	(	const numeric &	x,
		const numeric &	y
	)			[friend]

operator*

Parameters:

x	first argument
y	second argument

Definition at line 1282 of file numeric.cpp.

numeric operator/	(	const numeric &	x,
		const numeric &	y
	)			[friend]

operator/

Parameters:

x	first argument
y	second argument

Definition at line 1289 of file numeric.cpp.

numeric operator%	(	const numeric &	x,
		const numeric &	y
	)			[friend]

operator%

Parameters:

x	first argument
y	second argument

Definition at line 1296 of file numeric.cpp.

---

Member Data Documentation

const numeric_radix numeric::_radix = RADIX10 [static]

radix 10

Definition at line 250 of file numeric.h.

Referenced by minus(), multiply(), numeric(), plus(), and room_count().

room_array< ub1_t > numeric::_vec [private]

internal buffer

Definition at line 253 of file numeric.h.

Referenced by compare(), cutjunk(), divide(), format(), is_zero(), minus(), multiply(), numeric(), operator%=(), operator*=(), operator+=(), operator-=(), operator/=(), operator<<(), operator=(), operator>>(), parse(), parse_orcl(), persist(), persist_orcl(), persist_sql(), plus(), and scan().

size_t numeric::_scale [private]

scale

Definition at line 254 of file numeric.h.

Referenced by compare(), cutjunk(), divide(), format(), minus(), multiply(), operator<<(), operator=(), operator>>(), orcl_len(), parse(), parse_sql(), persist(), persist_orcl(), persist_sql(), plus(), scale(), and scan().

size_t numeric::_precision [private]

precision

Definition at line 255 of file numeric.h.

Referenced by compare(), cutjunk(), divide(), format(), is_zero(), minus(), multiply(), numeric(), operator<<(), operator=(), operator>>(), orcl_len(), parse(), persist(), persist_orcl(), persist_sql(), plus(), precision(), and scan().

bool numeric::_sign [private]

sign, true means negative

Definition at line 256 of file numeric.h.

Referenced by format(), negative(), numeric(), operator%=(), operator*=(), operator+=(), operator-=(), operator/=(), operator<(), operator<=(), operator=(), operator==(), parse(), parse_sql(), persist(), persist_sql(), scan(), and sign().

---

The documentation for this class was generated from the following files:

• numeric.h
• numeric.cpp