RegMath (Math libraries for Regina)

RegMath: math libraries for Regina RegMath consists of two libraries of transcendental functions which allow rexx programmers to easily and efficiently perform calculations in a wide array of application domains. In both libraries, the routines convert rexx variables into binary floating point format and use the system's math libraries to perform the calculation. This has the advantage of simplicity and speed, but limits precision to 16 digits. RxMath duplicates the interface of IBM's RxMath library. RexxMath is intended to duplicate the interface of a math library which is available for AmigaRexx. Which library you use depends largely on whether you need code which is compatible with RxMath or you need code which is compatible with AmigaRexx. The IBM routines provide more flexibility in the trig functions, but the other library has more functions over-all. In order to make this a `rexx math bumper pack', I have included John Brock's excellent Rexx implementation of most of the same routines. Because they are written in Rexx, they allow arbitrary precision based on the setting of numeric digits, which may be necessary in some applications. There is unfortunately a substantial performance penalty, and Rexx does not provide a convenient mechanism for loading libraries written in Rexx. I previously released RexxMath as an unsupported library. This release supercedes the earlier AMath, fixes one serious bug, and implements a new function which I missed previously. This is version 1.0.0. I will increment the third digit each time I do a bug-fix release. I will increment the second digit if I ever add a large number of new functions, however the only ones missing here are the Bessel functions, and I haven't used them in years. To compile the library using Microsoft C, type nmake -f Makefile.nt. To compile the library under FreeBSD, type make -f Makefile.bsd. To compile the library using EMX GCC under OS/2, type make -f Makefile.emx. To compile the library under another Unix system, you might try using the FreeBSD makefile as a departure point. To install on NT, copy rexxmath.dll and/or rxmath.dll to a directory in your path (e.g., the directory with regina.exe). To install on OS/2, copy rexxmath.dll and/or rxmath.dll to a directory in your LIBPATH. Note: do not install rxmath.dll if you have IBM's version. rexxmath.dll will work with IBM Rexx, though. To install on Unix systems, copy librexxmath.so/librxmath.so (or whatever they're called on your system :( to some central location and put that central location in your LD_LIBRARY_PATH, LIBPATH, SHLIB_PATH, or whatever it's called on your system. FreeBSD has a nice utility to set standard library searches, which you might want to investigate. Provided as-is in the hopes that it will be useful. -- patrick mcphee