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The java.lang.StrictMath libraries require use of the FDLIBM algorithms for some methods:
* sin, cos, tan
* asin, acos, atan
* sinh, cosh, tanh
* log, exp, log10
* expm1, log1p
These algorithms are implemented in C and it would be advantageous to implement them in Java instead.
The port to fdlibm is partially done under JDK 9; the remainder will be done in a future release under JDK-8171407.
FC Extension Request
The remaining work is to apply the same techniques which have already been successfully used to port the FDLIBM pow, hypot, and cbrt functions to exp, log, sin, cos, etc. The ported functions have much better performance (no Java <-> JNI transitions) and will remove the need to maintain a particularly troublesome piece of native code (JDK-4294714, JDK-8074816, etc.). Therefore, I judge this effort to be low risk and able to be completed by August 15, 2016 (work is expected to proceed function by function interspersed with other work).
Can we do fmod as well? See JDK-8015396 and JDK-8145543.
Nice! I didn't know you are actively working on this. Right now there is no Fix Version. Any chance to get this into 9?