Item_func_neg Class Reference

Inheritance diagram for Item_func_neg:

List of all members.

Public Member Functions
	Item_func_neg (Item *a)
double	real_op ()
	Performs the operation that this functions implements when the result type is REAL.
longlong	int_op ()
	Performs the operation that this functions implements when the result type is INT.
my_decimal *	decimal_op (my_decimal *)
	Performs the operation that this functions implements when the result type is DECIMAL.
const char *	func_name () const
enum Functype	functype () const
void	fix_length_and_dec ()
void	fix_num_length_and_dec ()
uint	decimal_precision () const
bool	check_partition_func_processor (uchar *int_arg)

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Member Function Documentation

my_decimal * Item_func_neg::decimal_op

(

my_decimal *

)

[virtual]

Performs the operation that this functions implements when the result type is DECIMAL.

Parameters:

A	pointer where the DECIMAL value will be allocated.

Returns:

• 0 If the result is NULL
• The same pointer it was given, with the area initialized to the result of the operation.

Implements Item_func_numhybrid.

longlong Item_func_neg::int_op

(

)

[virtual]

Performs the operation that this functions implements when the result type is INT.

Returns:

The result of the operation.

Implements Item_func_numhybrid.

double Item_func_neg::real_op

(

)

[virtual]

Performs the operation that this functions implements when the result type is REAL.

Returns:

The result of the operation.

Implements Item_func_numhybrid.

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

• item_func.h
• item_func.cc