https://github.com/ducha-aiki/fast_atan2

Realization of the atan2 approximations faster than standard function.
https://github.com/ducha-aiki/fast_atan2

atan2 c-plus-plus

Last synced: 8 months ago
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Realization of the atan2 approximations faster than standard function.

• Host: GitHub
• URL: https://github.com/ducha-aiki/fast_atan2
• Owner: ducha-aiki
• License: other
• Created: 2013-07-04T09:49:08.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2013-07-04T09:53:52.000Z (over 12 years ago)
• Last Synced: 2025-02-25T15:07:58.707Z (11 months ago)
• Topics: atan2, c-plus-plus
• Language: C++
• Size: 105 KB
• Stars: 25
• Watchers: 4
• Forks: 6
• Open Issues: 2
• Metadata Files:
  • Readme: README.txt
  • License: LICENSE.txt

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README

          
fast_atan is realization of the atan2 approximations faster than standard function. 

Performance atan2 approximations on 200 000 random values

name            | time [us]| mean error [deg] | max. error [deg] |

cmath atan2     |   16324  |       –          |       –          |

atan2LUT[256]   |    4534  |     0.083        |     0.224        |

atan2LUTif[256] |    4710  |     0.083        |     0.224        |

atan2PI_4       |    3826  |     2.640        |     4.074        |

atan2approx     |    3949  |     0.135        |     0.215        |