11.11.2016 17:20, Alex Peshkoff wrote: > Decimal floating point numbers - first draft
Great ! > This is according to FB4 roadmap - enhancement of precision of > calculations in firebird. > You can read about decfloat datatype here: > https://www.toadworld.com/platforms/ibmdb2/w/wiki/7700.decfloat-overview > IBM's library decNumber (has ICU license) > http://speleotrove.com/decimal/decnumber.html is used in out implementation. > > What's done: > - Added new datatypes: DECFLOAT(16) and DECFLOAT(34), using 64/128 bits > for numbers representation. > - It can be used in all calculations, including various aggregates, > power and logarithm, but missing trigonometry. > - DecFloats are supported in network protocol. > > What's missing: > - Use of decimal float in sort operations Also, it can't be indexed so far, correct ? > - Control over rounding modes and exception raise rules (low-level > support is included). Regards, Vlad ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
