[Bug 240295] math(3): Add Complex Arithmetic functions and their hyperbolic counterparts
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Thu Sep 5 23:07:59 UTC 2019
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240295
Steve Kargl <kargl at FreeBSD.org> changed:
What |Removed |Added
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CC| |kargl at FreeBSD.org
--- Comment #2 from Steve Kargl <kargl at FreeBSD.org> ---
Sigh. Here we go again.
>From src/lib/msun/src/math_private.h
* The C99 standard intends x+I*y to be used for this, but x+I*y is
* currently unusable in general since gcc introduces many overflow,
* underflow, sign and efficiency bugs by rewriting I*y as
* (0.0+I)*(y+0.0*I) and laboriously computing the full complex product.
* In particular, I*Inf is corrupted to NaN+I*Inf, and I*-0 is corrupted
* to -0.0+I*0.0.
>From the llvm bug database
https://bugs.llvm.org/show_bug.cgi?id=8532
Some of the code in the patch uses I.
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