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Precision Math implementation

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This commit is contained in:
hf@deer.(none)
2005-02-09 02:50:45 +04:00
parent 6e6daf8189
commit b94a482ee9
104 changed files with 9131 additions and 1730 deletions
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31
sql/sql_analyse.h
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@ -61,6 +61,7 @@ int compare_longlong2(void* cmp_arg __attribute__((unused)),
int compare_ulonglong(const ulonglong *s, const ulonglong *t);
int compare_ulonglong2(void* cmp_arg __attribute__((unused)),
const ulonglong *s, const ulonglong *t);
int compare_decimal2(int* len, const char *s, const char *t);
Procedure *proc_analyse_init(THD *thd, ORDER *param, select_result *result,
List<Item> &field_list);
void free_string(String*);
@ -143,6 +144,36 @@ public:
};
int collect_decimal(char *element, element_count count,
TREE_INFO *info);
class field_decimal :public field_info
{
my_decimal min_arg, max_arg;
my_decimal sum[2], sum_sqr[2];
int cur_sum;
int bin_size;
public:
field_decimal(Item* a, analyse* b) :field_info(a,b)
{
bin_size= my_decimal_get_binary_size(a->max_length, a->decimals);
init_tree(&tree, 0, 0, bin_size, (qsort_cmp2)compare_decimal2,
0, 0, (void *)&bin_size);
};
void add();
void get_opt_type(String*, ha_rows);
String *get_min_arg(String *);
String *get_max_arg(String *);
String *avg(String *s, ha_rows rows);
friend int collect_decimal(char *element, element_count count,
TREE_INFO *info);
tree_walk_action collect_enum()
{ return (tree_walk_action) collect_decimal; }
String *std(String *s, ha_rows rows);
};
int collect_real(double *element, element_count count, TREE_INFO *info);
class field_real: public field_info