MIPS: math-emu: Update sNaN quieting handlers

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Commit fdffbafb [Lots of FPU bug fixes from Kjeld Borch Egevang.]
replaced the two single `ieee754sp_nanxcpt' and `ieee754dp_nanxcpt'
places, where sNaN quieting used to happen for single and double
floating-point operations respectively, with individual qNaN
instantiations across all the call sites instead.  It also made most of
these two functions dead code as where called on a qNaN they return
right away.

To revert the damage and make sNaN quieting uniform again first rewrite
`ieee754sp_nanxcpt' and `ieee754dp_nanxcpt' to do the same quieting all
the call sites do, that is return the default qNaN encoding for all
input sNaN values; never propagate any sNaN payload bits from its
trailing significand field.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9685/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

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Maciej W. Rozycki 2015-04-03 23:25:18 +01:00 • committed by Ralf Baechle

parent 1f6d2c29b0

commit ec98f9a01f

2 changed files with 6 additions and 16 deletions

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11

arch/mips/math-emu/ieee754dp.c

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11

arch/mips/math-emu/ieee754sp.c

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