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IEEE-754R defines a normal floating point number as: 2.1.38 normal number: For a particular format, a finite non-zero floating-point number with magnitude greater than or equal to a minimum bemin value, where b is the radix. Normal numbers can use the full precision available in a format. In this standard, z...

LGTM (and you've already gotten other positive feedback as well). -eric On Tue, Jun 18, 2013 at 3:45 PM, Michael Gottesman <mgottesman at apple.com> wrote: > IEEE-754R defines a normal floating point number as: > > 2.1.38 normal number: For a particular format, a finite non-zero > floating-point number with magnitude greater than or equal to a minimum > bemin value, where b is the radix. Normal numbers can use the full precision > available in a fo...

I think it’s a splendid idea (but you already knew that). On Jun 18, 2013, at 6:45 PM, Michael Gottesman <mgottesman at apple.com> wrote: > IEEE-754R defines a normal floating point number as: > 2.1.38 normal number: For a particular format, a finite non-zero floating-point number with magnitude greater than or equal to a minimum bemin value, where b is the radix. Normal numbers can use the full precision available in a format. In this standa...

...Michael On Jun 18, 2013, at 5:07 PM, Eric Christopher <echristo at gmail.com> wrote: > LGTM (and you've already gotten other positive feedback as well). > > -eric > > On Tue, Jun 18, 2013 at 3:45 PM, Michael Gottesman <mgottesman at apple.com> wrote: >> IEEE-754R defines a normal floating point number as: >> >> 2.1.38 normal number: For a particular format, a finite non-zero >> floating-point number with magnitude greater than or equal to a minimum >> bemin value, where b is the radix. Normal numbers can use the full precision >&...

...icitly handle 0/0, but the > position of the IEEE appears to be that it should yield a NaN of the > appropriate sign. See > http://standards.ieee.org/reading/ieee/interp/754-1985.html OK, it does explicitly handle it. My reading comprehension seems to be lacking right now :( http://754r.ucbtest.org/standards/754xml.html#invalid-exception The above lists all operations that yield a NaN. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20070322/eedc80e2/attachment.html>

Jeff Cohen wrote: > Jeff Cohen wrote: >> Reid Spencer wrote: >>> On Thu, 2007-03-22 at 15:50 -0700, leo han wrote: >>> >>>> Hello, I have a question about the constant folding for fdiv instructions. >>>> For the instruction "fdiv double 0.0, 0.0", the folded result is inf. I >>>> think this should be nan. Can anyone tell

Here is the link: https://groups.google.com/forum/#!topic/ia32-abi/nq6cvH_VVV4 -- H.J.

...it back from the list - you might want to check if it's stuck in moderation somewhere: I would suggest that rather than using old terms such as "single", "double" and "128-bit extended" to describe floating-point formats, and rather than referring to "IEEE-754R", the names from IEEE 754-2008 should be used. That is, binary32, binary64, binary128. (When referring to decimal32, decimal64, decimal128 you still need to specify somewhere that it's BID rather than DPD. And you'll still need to refer to 80-bit extended since that's not an...

...rithmetic can be correctly performed on the host. Performance should nonetheless be reasonable, particularly for its intended use. It may be useful as a base implementation for a run-time library during development of a faster target-specific one. All 5 rounding modes in the IEEE-754R draft are handled correctly for all implemented operations. Currently implemented operations are add, subtract, multiply, divide, fused-multiply-add, conversion-to-float, conversion-to-integer and conversion-from-integer. New rounding modes (e.g. away from zero) can be added w...

...# __int128 // ::= o # unsigned __int128 // ::= f # float // ::= d # double // ::= e # long double, __float80 // ::= g # __float128 // ::= z # ellipsis // ::= Dd # IEEE 754r decimal floating point (64 bits) // ::= De # IEEE 754r decimal floating point (128 bits) // ::= Df # IEEE 754r decimal floating point (32 bits) // ::= Dh # IEEE 754r half-precision floating point (16 bits) // ::= Di # char32_t...