struct BSON::Decimal128

Overview

128-bit decimal floating point.

NOTE This implementation has been mostly ported from https://github.com/mongodb/bson-ruby/blob/master/lib/bson/decimal128.rb.

Performance is bad because it relies on a string representation of the value.

See: https://github.com/mongodb/specifications/blob/master/source/bson-decimal128/decimal128.rst

EXPONENT_OFFSET = 6176: Exponent offset.
INFINITY_MASK = 8646911284551352320_i64.to_big_i: Infinity mask.
INFINITY_REGEX = /^(\+|\-)?Inf(inity)?$/i: Regex matching a string representing positive or negative Infinity.
INFINITY_STRING = "Infinity": String representing an Infinity value.
MAX_DIGITS_OF_PRECISION = 34: Maximum digits of precision.
MAX_EXPONENT = 6111: Maximum exponent.
MIN_EXPONENT = -6176: Minimum exponent.
NAN_MASK = 8935141660703064064_i64.to_big_i: NaN mask.
NAN_REGEX = /^(\-)?(S)?NaN$/i: Regex matching a string representing NaN.
NAN_STRING = "NaN": String representing a NaN value.
SCIENTIFIC_EXPONENT_REGEX = /E\+?/i: Regex matching a scientific exponent.
SIGN_AND_DIGITS_REGEX = /^(\-)?(\S+)/: Regex for separating a negative sign from the significands.
SIGN_BIT_MASK = (1.to_big_i << 63): Signed bit mask.
SIGNIFICAND_WITH_LEADING_ZEROS_REGEX = /(0*)(\d+)/: Regex for the fraction, including leading zeros.
SNAN_MASK = (1.to_big_i << 57): SNaN mask.
TRAILING_ZEROS_REGEX = /[1-9]*(0+)$/: Regex for capturing trailing zeros.
TWO_HIGHEST_BITS_SET = (3.to_big_i << 61): The two highest bits of the 64 high order bits.
VALID_DECIMAL128_STRING_REGEX = /^[\-\+]?(\d+(\.\d*)?|\.\d+)(E[\-\+]?\d+)?$/i: Regex for a valid decimal128 string format.

.new(significand : BigInt, exponent : Int32, is_negative : Bool)
Convert parts representing a Decimal128 into the corresponding bits.
.new(string : String)
.new(big_decimal : BigDecimal)
.new(bytes : Bytes)

#bytes
BSON byte representation.
#high : BigInt
#infinity?
#low : BigInt
#nan?
#negative?
#to_big_d
#to_canonical_extjson(builder : JSON::Builder)
Serialize to a canonical extended json representation.
#to_json(builder : JSON::Builder)
#to_s(io : IO)
Same as #inspect(io).

def self.new(significand : BigInt, exponent : Int32, is_negative : Bool) #

Convert parts representing a Decimal128 into the corresponding bits.

def self.new(string : String) #

def self.new(big_decimal : BigDecimal) #

def self.new(bytes : Bytes) #

def bytes #

BSON byte representation.

def high : BigInt #

def infinity? #

def low : BigInt #

def nan? #

def negative? #

def to_big_d #

def to_canonical_extjson(builder : JSON::Builder) #

Serialize to a canonical extended json representation.

NOTE see https://github.com/mongodb/specifications/blob/master/source/extended-json.rst

def to_json(builder : JSON::Builder) #

def to_s(io : IO) #

Description copied from struct Struct

Same as #inspect(io).