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Added typedef decimal_digits_t (uint16) for number of digits in most

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aspects of decimals and integers

For fields and Item's uint8 should be good enough. After
discussions with Alexander Barkov we choose uint16 (for now)
as some format functions may accept +256 digits.

The reason for this patch was to make the usage and storage of decimal
digits simlar. Before this patch decimals was stored/used as uint8,
int and uint.  The lengths for numbers where also using a lot of
different types.

Changed most decimal variables and functions to use the new typedef.

squash! af7f09106b6c1dc20ae8c480bff6fd22d266b184

Use decimal_digits_t for all aspects of digits (total, precision
and scale), both for decimals and integers.
This commit is contained in:
Monty
2020-08-27 12:24:32 +03:00
committed by Sergei Golubchik
parent aee84453ab
commit fa7d4abf16
19 changed files with 275 additions and 226 deletions
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24
include/decimal.h
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@@ -43,7 +43,8 @@ typedef struct st_decimal_t {
int internal_str2dec(const char *from, decimal_t *to, char **end,
my_bool fixed);
int decimal2string(const decimal_t *from, char *to, int *to_len,
int fixed_precision, int fixed_decimals,
decimal_digits_t fixed_precision,
decimal_digits_t fixed_decimals,
char filler);
int decimal2ulonglong(const decimal_t *from, ulonglong *to);
int ulonglong2decimal(ulonglong from, decimal_t *to);
@@ -51,16 +52,18 @@ int decimal2longlong(const decimal_t *from, longlong *to);
int longlong2decimal(longlong from, decimal_t *to);
int decimal2double(const decimal_t *from, double *to);
int double2decimal(double from, decimal_t *to);
int decimal_actual_fraction(const decimal_t *from);
int decimal2bin(const decimal_t *from, uchar *to, int precision, int scale);
int bin2decimal(const uchar *from, decimal_t *to, int precision, int scale);
decimal_digits_t decimal_actual_fraction(const decimal_t *from);
int decimal2bin(const decimal_t *from, uchar *to, decimal_digits_t precision,
decimal_digits_t scale);
int bin2decimal(const uchar *from, decimal_t *to, decimal_digits_t precision,
decimal_digits_t scale);
int decimal_size(int precision, int scale);
int decimal_bin_size(int precision, int scale);
int decimal_result_size(decimal_t *from1, decimal_t *from2, char op,
int param);
uint decimal_size(decimal_digits_t precision, decimal_digits_t scale);
uint decimal_bin_size(decimal_digits_t precision, decimal_digits_t scale);
uint decimal_result_size(decimal_t *from1, decimal_t *from2, char op,
int param);
int decimal_intg(const decimal_t *from);
decimal_digits_t decimal_intg(const decimal_t *from);
int decimal_add(const decimal_t *from1, const decimal_t *from2, decimal_t *to);
int decimal_sub(const decimal_t *from1, const decimal_t *from2, decimal_t *to);
int decimal_cmp(const decimal_t *from1, const decimal_t *from2);
@@ -71,7 +74,8 @@ int decimal_mod(const decimal_t *from1, const decimal_t *from2, decimal_t *to);
int decimal_round(const decimal_t *from, decimal_t *to, int new_scale,
decimal_round_mode mode);
int decimal_is_zero(const decimal_t *from);
void max_decimal(int precision, int frac, decimal_t *to);
void max_decimal(decimal_digits_t precision, decimal_digits_t frac,
decimal_t *to);
#define string2decimal(A,B,C) internal_str2dec((A), (B), (C), 0)
#define string2decimal_fixed(A,B,C) internal_str2dec((A), (B), (C), 1)