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MySQL 5.1: Item_dec_func Class Reference

Item_dec_func Class Reference

#include <item_func.h>

Inheritance diagram for Item_dec_func:

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Collaboration diagram for Item_dec_func:

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List of all members.

Public Member Functions

 Item_dec_func (Item *a)
 Item_dec_func (Item *a, Item *b)
void fix_length_and_dec ()
double fix_result (double value)

Detailed Description

Definition at line 465 of file item_func.h.

Constructor & Destructor Documentation

Item_dec_func::Item_dec_func ( Item *  a  )  [inline]

Definition at line 468 of file item_func.h.

00468 :Item_real_func(a) {}

Item_dec_func::Item_dec_func ( Item *  a,
Item *  b 
) [inline]

Definition at line 469 of file item_func.h.

00469 :Item_real_func(a,b) {}

Member Function Documentation

void Item_dec_func::fix_length_and_dec (  )  [inline, virtual]

Reimplemented from Item_real_func.

Definition at line 470 of file item_func.h.

References Item::decimals, Item::float_length(), Item::max_length, Item::maybe_null, and NOT_FIXED_DEC.

00471   {
00472     decimals=NOT_FIXED_DEC; max_length=float_length(decimals);
00473     maybe_null=1;
00474   }

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double Item_dec_func::fix_result ( double  value  )  [inline]

Definition at line 475 of file item_func.h.

References finite, Item::null_value, and POSTFIX_ERROR.

Referenced by Item_func_tan::val_real(), Item_func_sin::val_real(), Item_func_cos::val_real(), Item_func_atan::val_real(), Item_func_asin::val_real(), and Item_func_acos::val_real().

00476   {
00477 #ifndef HAVE_FINITE
00478     return value;
00479 #else
00480     /* The following should be safe, even if we compare doubles */
00481     if (finite(value) && value != POSTFIX_ERROR)
00482       return value;
00483     null_value=1;
00484     return 0.0;
00485 #endif
00486   }

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The documentation for this class was generated from the following file:
Generated on Sat Sep 9 21:22:02 2006 for MySQL 5.1 by  doxygen 1.4.7