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target/i386: reimplement fpatan using floatx80 operations
authorJoseph Myers <[email protected]>
Tue, 23 Jun 2020 00:01:38 +0000 (00:01 +0000)
committerPaolo Bonzini <[email protected]>
Fri, 26 Jun 2020 13:39:39 +0000 (09:39 -0400)
commitff57bb7b63267dabd60f88354c8c29ea5e1eb3ec
tree5198464485b39858e35b8bbf45c0091ec332db1btree | snapshot
parent1f18a1e6ab8368a4eab2d22894d3b2ae75250cd3commit | diff
target/i386: reimplement fpatan using floatx80 operations

The x87 fpatan emulation is currently based around conversion to
double.  This is inherently unsuitable for a good emulation of any
floatx80 operation.  Reimplement using the soft-float operations, as
for other such instructions.

Signed-off-by: Joseph Myers <[email protected]>
Message-Id: <alpine.DEB.2.21.2006230000340[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
target/i386/fpu_helper.c diff | blob | blame | history
tests/tcg/i386/test-i386-fpatan.c [new file with mode: 0644] blob
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