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Michael Borcherds edited comment on MATH-740 at 4/4/17 12:26 PM: ----------------------------------------------------------------- I've run the official tests on FastMath on GWT + Core i7 in Chrome A lot slower: abs 20 acos 14 atan2 21 cbrt 11 pow 12 asin 2.4 log 10 log10 12 log1p 13 hypot 20 expm1 2.0 No significant difference: atan 1.2 cos 1.5 cosh 0.95 sin 1.4 sinh 0.84 tan 1.5 tanh 1.0 faster: exp 0.64 sqrt 0.76 See MATH-1406 for more GWT discussion was (Author: murkle): I've run the official tests on FastMath on GWT + Core i7 in Chrome so my patch deletes almost all of FastMath and uses Math instead A lot slower: abs 20 acos 14 atan2 21 cbrt 11 pow 12 asin 2.4 log 10 log10 12 log1p 13 hypot 20 expm1 2.0 No significant difference: atan 1.2 cos 1.5 cosh 0.95 sin 1.4 sinh 0.84 tan 1.5 tanh 1.0 faster: exp 0.64 sqrt 0.76 See MATH-1406 for more GWT discussion > 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)