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class · Ruby 3.0

Float

< Numeric 48 instance methods

Float objects represent inexact real numbers using the native architecture’s double-precision floating point representation.

Floating point has a different arithmetic and is an inexact number. So you should know its esoteric system. See following:

Instance methods 48

#% #* #** #+ #- #-@ #/ #< #<= #<=> #== #=== #> #>= #abs #angle #arg #ceil #coerce #denominator #divmod #eql? #fdiv #finite? #floor #hash #infinite? #inspect #magnitude #modulo #nan? #negative? #next_float #numerator #phase #positive? #prev_float #quo #rationalize #round #to_d #to_f #to_i #to_int #to_r #to_s #truncate #zero?

Constants

DIG

The minimum number of significant decimal digits in a double-precision floating point.

Usually defaults to 15.

EPSILON

The difference between 1 and the smallest double-precision floating point number greater than 1.

Usually defaults to 2.2204460492503131e-16.

INFINITY

An expression representing positive infinity.

MANT_DIG

The number of base digits for the double data type.

Usually defaults to 53.

MAX

The largest possible integer in a double-precision floating point number.

Usually defaults to 1.7976931348623157e+308.

MAX_10_EXP

The largest positive exponent in a double-precision floating point where 10 raised to this power minus 1.

Usually defaults to 308.

MAX_EXP

The largest possible exponent value in a double-precision floating point.

Usually defaults to 1024.

MIN

The smallest positive normalized number in a double-precision floating point.

Usually defaults to 2.2250738585072014e-308.

If the platform supports denormalized numbers, there are numbers between zero and Float::MIN. 0.0.next_float returns the smallest positive floating point number including denormalized numbers.