This is the mail archive of the
mailing list for the GCC project.
Re: [PATCH] PR libstdc++/13045 / C++ demangler, floating values and function pointer type return type postfix fix.
Ian Lance Taylor <email@example.com> writes:
| 2) The same floating point number has multiple representations as a
| C99 hex floating point constant.
Not so many, actually. I believe we can easily specify a normal form
for such a constant -- which would mean that equality can be reduced
| The ABI would have to be written
| to constrain this in some way, such as requiring that the exponent
| be a multiple of 4 and the significand have no more than three
| trailing zero bits (i.e., no trailing hex zero digit).
No leading zeros for the exponent, no trailing zeros for the
mantissa. I do not think the mulitple of 4 requirement is necessary.