qemu-e2k/fpu
Peter Maydell f9288a76f1 softfloat: Add support for ties-away rounding
IEEE754-2008 specifies a new rounding mode:

"roundTiesToAway: the floating-point number nearest to the infinitely
precise result shall be delivered; if the two nearest floating-point
numbers bracketing an unrepresentable infinitely precise result are
equally near, the one with larger magnitude shall be delivered."

Implement this new mode (it is needed for ARM). The general principle
is that the required code is exactly like the ties-to-even code,
except that we do not need to do the "in case of exact tie clear LSB
to round-to-even", because the rounding operation naturally causes
the exact tie to round up in magnitude.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-01-08 19:07:22 +00:00
..
softfloat-macros.h softfloat: Fix shift128Right for shift counts 64..127 2013-06-10 11:36:12 -05:00
softfloat-specialize.h softfloat: implement fused multiply-add NaN propagation for MIPS 2012-10-31 22:20:45 +01:00
softfloat.c softfloat: Add support for ties-away rounding 2014-01-08 19:07:22 +00:00