Module tidb_query_datatype::codec::mysql::decimal[−][src]

Structs

Decimal represents a decimal value.

Res
RoundMode

DECIMAL_STRUCT_SIZE	`DECIMAL_STRUCT_SIZE`is the struct size of `Decimal`.
DEFAULT_DIV_FRAC_INCR
DIGITS_PER_WORD
DIG_2_BYTES
DIG_MASK
FRAC_MAX
MAX_FRACTION
NOT_FIXED_DEC
WORD_BASE
WORD_BUF_LEN
WORD_MAX
WORD_SIZE

DecimalDatumPayloadChunkEncoder
DecimalDecoder
DecimalEncoder

add	`add` adds a and b and carry, stores the sum and new carry.
calc_sub_carry	calculate the carry for lhs - rhs, returns the carry and needed temporary results for beginning a subtraction.
count_leading_zeroes	`count_leading_zeroes` returns the number of leading zeroes that can be removed from int.
count_trailing_zeroes	`count_trailing_zeroes` returns the number of trailing zeroes that can be removed from fraction.
dec_encoded_len	Return the first encoded decimal’s length.
do_add	add lhs to rhs.
do_div_mod
do_div_mod_impl
do_mul	`do_mul` multiplies two decimals.
do_sub	subtract rhs from lhs when lhs.negative=rhs.negative.
first_non_digit	Get the first non-digit ascii char in `bs` from `start_idx`.
fix_word_cnt_err	`fix_word_cnt_err` limits word count in `word_buf_len`.
max_decimal	Get the max possible decimal with giving precision and fraction digit count. The `prec` should >= `frac_cnt`.
max_or_min_dec	`max_or_min_dec`(`NewMaxOrMinDec` in tidb) returns the max or min value decimal for given precision and fraction. The `prec` should >= `frac_cnt`.
read_word
sub	`sub` subtracts rhs and carry from lhs, store the diff and new carry.
sub2	`sub2` subtracts rhs and carry from lhs, stores the diff and new carry. the new carry may be 2.