On 12/02/2015 12:08 PM, Joseph Myers wrote:
On Wed, 2 Dec 2015, Jeff Law wrote:
Why let NEGATE_EXPR and ABS_EXPR pass through here? I realize that these can
often be implemented with bit-twiddling, so they're usually considered
special. BUt in this case aren't we just dealing with constants and wouldn't
we want to still express the neg/abs so that we get a signal when the input
value is sNaN rather than collapse down to a constant?
See IEEE 754-2008, 5.5.1. "Implementations shall provide the following
homogeneous quiet-computational sign bit operations for all supported
arithmetic formats; they only affect the sign bit. The operations treat
floating-point numbers and NaNs alike, and signal no exception. These
operations may propagate non-canonical encodings.".
Ah, in that case, nevermind :-)
So I think it's just the spelling and whitespace nits that need to be fixed.
jeff
