fixed

fixed implements a fixed-point number, where both mantissa and exponent are stored in a single number. Can be used to represent currency rates with up to 16 digits of precision.

Installation

$ go get github.com/avdva/fixed

Representation

Value is a positive fixed-point number. It currently uses a uint64 value as a data type, where 8 bits are used for exponent and 56 for mantissa.

   63      55                                                     0
   ________|_______________________________________________________
   eeeeeeeemmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Value can be useful for representing numbers like prices in financial services. Negative numbers aren't currently supported.

Usage

To get a value use one of From{Uint64, String, Float, MantAndExp} :

	v, err := fixed.FromString("1.23456")
	if err != nil {
		panic(err)
	}

See value_example_test.go for more examples.