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Re: [alpine-aports] [PATCH] Add support for ppc64le

James Cloos
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<m3tw8t4j9n.fsf@jhcloos.com>
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1484940916
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Newer ppcle hardware supports ieee 128 bit float now.  IBM decided to
switch from double-double to proper 128 bit some time ago.

(They only had double-double initially because it was easy; they wrote
microcode to support it using the then-current processors' 64bit float
hardware.  Later processors added double-double hardware.)

Musl of course only supports ieee floats.

Alpine probably needs two ppcle versions; one for older double-double
hardware which sets long double to 64 bits, and another for newer
systems which sets long double to 128 bits.

I *think* all power8 systems support ieee 128.

-JimC
-- 
James Cloos <cloos@jhcloos.com>         OpenPGP: 0x997A9F17ED7DAEA6



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