[MATH-1113] "FastMath.atan" is slow

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.2
• Fix Version/s: 4.X
• Labels: perfomance
• Assignee: Unassigned
• Reporter: Gilles Sadowski
• Created: 25/Mar/14 14:30
• Updated: 04/Jun/21 11:32

Description

This issue is related to
MATH-740
MATH-901

Micro-benchmarks show that "FastMath.atan2" is faster than "Math.atan2" but that "FastMath.atan" is slower than "Math.atan". However, both "FastMath.atan2" and "Math.atan" call the internal method "FastMath.atan(double,double,boolean)".

It seems that some performance improvement could be achieved, through understanding why the results seem contradictory.

Issue Links

• is part of: MATH-740 Some "FastMath" functions are slow