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Michael Borcherds commented on MATH-740: ---------------------------------------- Sorry, for > Also GWT 2.8 supports Math.doubleToLongBits() (probably very slow) but not > Math.doubleToRawLongBits() read. > Also GWT 2.8 supports Double.doubleToLongBits() (probably very slow) but not > Double.doubleToRawLongBits() Math.powerOfTwoD() is a method from Math.java http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/java/lang/Math.java > Some "FastMath" functions are slow > ---------------------------------- > > Key: MATH-740 > URL: https://issues.apache.org/jira/browse/MATH-740 > Project: Commons Math > Issue Type: Wish > Reporter: Gilles > Priority: Minor > Fix For: 4.0 > > Attachments: jafamatests.zip > > > From the two benchmarks we currently have in "FastMathTestPerfomance", we > have that the following functions are much slower in "FastMath" than in > either "Math" or "StrictMath" (the performance *loss*, for each of the > benchmarks, is given in parentheses): > * log10 (46%, 36%) > * log1p (68%, 112%) > * tan (11%, 61%) > * atan (26%, 125%) > * atan2 (44%, 40%) -- This message was sent by Atlassian JIRA (v6.3.15#6346)