Implement sincos using the new Lisp trig routines. This can now be
used for all platforms. code/irrat.lisp:: * Implement %SINCOS compiler/float-tran.lisp:: * Update deftransforms for CIS. %SINCOS can be used on any platform. tests/trig.lisp: * Add tests to verify %sincos returns exactly the same values as for sin and cos.
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