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2020-09-20T05:28:31.060104Z
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Apply fix for ld80 and ld128 submitted by Steve Kargl:

- Micro-optimization: use sincosl(x) instead of a call to cosl(x) and
  a call to sinl(x).  Argument reduction is done once not twice.

- Use a long double constant instead of an invalid double constant.

- Spell scale2 correctly

He could not test ld128, so that patch is untested.

Submitted by:	sgk at troutmask.apl.washington.edu (Steve Kargl)

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