>-----Original Message----- >From: avr-libc-dev-bounces+anitha.boyapati=atmel....@nongnu.org >[mailto:avr-libc-dev-bounces+anitha.boyapati=atmel....@nongnu.org] On >Behalf Of Joerg Wunsch >Sent: Friday, February 25, 2011 11:38 PM >To: avr-libc-dev@nongnu.org >Subject: Re: [avr-libc-dev] Feature wishlisht > >As Boyapati, Anitha wrote: > >> I recently saw new/delete operator support being requested. This >> made me think about C++ support. Likewise any such features in the >> long run maybe... > >Yes, libstdc++ support is on the wishlist, even though it's beyond the >scope of the avr-libc project.
Here comes my basic question - we do have libstdc++ in gcc already. However we are not building it for AVR-8 as of now. So what is the requirement for another library? To me it appears that libstdc++ can be built with a bootstrapped compiler (if it is possible). > >Likewise, 64-bit doubles are on the wishlist (as an option to the >current implementation), but again, this is much of a compiler issue >rather than library only. My preference would be a compiler option >much like we've got -mint8, so perhaps "-mdouble32" which enables the >current behaviour, defaulting to double being 64 bits as this is what >the ISO C standard asks for (well, sort of, but they're asking for >*more* than 32-bit FP for the "double" datatype, and while 48 bits >would satisfy their requirements, it's IMHO not possible to implement >a 48-bit datatype in GCC). This is still a mystery to me. When BITS_PER_UNIT/WORD is modified, the sizes of INT/LONG get affected. Implementing 48-bit double is definitely not straight forward (or may be not possible? To be confirmed) Anitha _______________________________________________ AVR-libc-dev mailing list AVR-libc-dev@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-libc-dev
