Skip to content

fp64lib.org

Handcrafted 64-bit floating point routines for AVR/arduino microprocessors

  • About
  • Examples
    • double vs. float
    • Leibniz Series, calculating PI/4
    • Double, a C++ wrapper class
    • Julien Date
  • Documentation
    • fp64lib Library reference (A-Z)
    • fp64lib Library reference by functions
    • fp64_sin(PI) is not 0
    • Using fp64lib natively with long double
    • fp64lib design principles
    • Benchmarks
    • Side-to-side comparision
    • History of fp64lib
    • Credits
  • Download
  • FAQ
fp64lib.org

V1.1.29 with space optimizations and bug fix in fp64_compare

In V1.1.29, the (flash) memory footprint for a number of routines was reduced. Furthermore, fp64_compare(a,b) returned a wrong result when a == -b. This was fixed.

Author UwePosted on January 20, 2026January 20, 2026Categories Uncategorized

Post navigation

Previous Previous post: V1.1.28 some space optimizations and fixed fp64_toString(-0)

Recent Posts

  • V1.1.29 with space optimizations and bug fix in fp64_compare
  • V1.1.28 some space optimizations and fixed fp64_toString(-0)
  • V1.1.27 increased compatibility with IEEE 754 for handling of -0
  • V1.1.26 fixes bug in fp64_compare
  • Documentation updated

Archives

  • January 2026
  • November 2025
  • August 2025
  • July 2025
  • June 2025
  • April 2022
  • March 2022
  • January 2022
  • September 2021
  • May 2021
  • March 2020
  • February 2020
  • January 2020
  • September 2019
  • August 2019

Categories

  • conversion
  • functions
  • Uncategorized
  • About
  • Examples
    • double vs. float
    • Leibniz Series, calculating PI/4
    • Double, a C++ wrapper class
    • Julien Date
  • Documentation
    • fp64lib Library reference (A-Z)
    • fp64lib Library reference by functions
    • fp64_sin(PI) is not 0
    • Using fp64lib natively with long double
    • fp64lib design principles
    • Benchmarks
    • Side-to-side comparision
    • History of fp64lib
    • Credits
  • Download
  • FAQ
fp64lib.org Proudly powered by WordPress