dbr@cybvax0.UUCP (Douglas Robinson) (04/28/86)
I am interested in a set of "C" language functions, suitable for
linking to analytical programs, which perform complex number
operations. I am interested in the fullest set possible.
Some time ago (late 1984?) I saw reference to such a treasure on
USENET, in net.physics or net.math. If the library refered to can
be resurrected and mailed to me, I would greatly appreciate it.
Douglas Robinson Jobs don't kill programmers... programmers kill jobs!
The Foxboro Company
MS-04-3A 617/543-8750
38 Neponset Avenue foxvax5!dbr
Foxboro, MA 02035
--
Doug Robinson Jobs don't kill programmers... programmers kill jobs!
617/492-8810 ...!{mit-eddie, harvard, mirror}!cybvax0!dbrwcs@ho95e.UUCP (#Bill_Stewart) (05/02/86)
In article <1032@cybvax0.UUCP> dbr@foxvax5.UUCP (Douglas Robinson) writes: >I am interested in a set of "C" language functions, suitable for >linking to analytical programs, which perform complex number >operations. ..... >Some time ago (late 1984?) I saw reference to such a treasure on >USENET, in net.physics or net.math. If the library refered to can >be resurrected and mailed to me, I would greatly appreciate it. Such libraries can be useful, but a much better approach is to get C++, which allows you to define your own data types, and overload the standard operators to work with them. Program development is a lot faster when you can write z0 = z1 + z2 * z3 * 3.141592; instead of z0 = c_add( z1, c_mul( c_mul( z2, z3 ), r_to_c( 3.141592 ))); Your programs also run faster because the complex functions can be expanded in-line at compile time instead of using function calls. The standard c++ libraries around here include data types for complex numbers, character strings, and arrays with whole-array-at-once operators. -- # Bill Stewart, AT&T Bell Labs 2G-202, Holmdel NJ 1-201-949-0705 ihnp4!ho95c!wcs
dbr@foxvax5.UUCP (D.B. Robinson ) (05/05/86)
In article <665@ho95e.UUCP> wcs@ho95e.UUCP (Bill Stewart 1-201-949-0705 ihnp4!ho95c!wcs HO 2G202) writes: >In article <1032@cybvax0.UUCP> dbr@foxvax5.UUCP (Douglas Robinson) writes: >>I am interested in a set of "C" language functions, suitable for >>linking to analytical programs, which perform complex number >>operations. ..... > >Such libraries can be useful, but a much better approach is to get C++, >which allows you to define your own data types, and overload the >standard operators to work with them. Program development is a lot ... >Your programs also run faster because the complex functions can be >expanded in-line at compile time instead of using function calls. I have heard mixed reviews of C++. Yes it seems that it would be a great productivity tool PROVIDING you have a 32Bit CPU and a compiler with LARGE amounts of capacity (I've heard of people exhausting certain limits on the 4.2BSD compiler on a VAX...). Some of us still have to be able to live with 16Bit processors (INTEL 8088/86/286) and some of us even have to live in the small model domain (strictly 16 bit addressing with split I/D). Not everyone has a spare VAX in their basement (YET :->). Douglas Robinson jobs don't kill programmers, programmers kill jobs The Foxboro Company MS 04-3A cybvax0!foxvax5!dbr 38 Neponset Avenue Foxboro, MA 02035 617/543-8750