Dragonbox

This library is a reference implementation of Dragonbox in C++. Dragonbox is a float-to-string conversion algorithm based on a beautiful algorithm Schubfach, developed by Raffaello Giulietti in 2017-2018. Dragonbox is further inspired by Grisu and Grisu-Exact. Dragonbox generates a pair of integers from a floating-point number: the decimal significand and the decimal exponent of the input floating-point number. These integers can then be used for string generation of the decimal representation of the input floating-point number, the procedure commonly called ftoa or dtoa.

Features

It has the roundtrip guarantee; that is, a correct parser interprets the generated output string as the original input floating-point number. (See here for some explanation on this
The output is of the shortest length; that is, no other output strings that are interpreted as the input number can contain less number of significand digits than the output of Dragonbox
The output is correctly rounded: the number generated by Dragonbox is the closest to the actual value of the input number among possible outputs of minimum number of digits
Include Dragonbox into CMake project
Documentation available
Examples included

Project Samples

Project Activity

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License

Apache License V2.0

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Additional Project Details

Programming Language

C++

Related Categories

C++ Libraries

Registered

2024-09-20

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