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diff --git a/test/ccured_olden/bh/Readme b/test/ccured_olden/bh/Readme deleted file mode 100644 index 5034f519..00000000 --- a/test/ccured_olden/bh/Readme +++ /dev/null @@ -1,62 +0,0 @@ -README README README README README README README README README README - - 22 June 1993 - - This is the fourth release of the hierarchical N-body program. The -algorithm used to compute gravitational forces has asymptotic complexity of -O(N log N). This is achieved by building a tree structure to represent the -mass distribution and estimating forces by a partial recursive descent of this -tree. See "A Hierarchical O(N log N) Force Calculation Algorithm", by Joshua -Barnes and Piet Hut, Nature, 324, 446, and "Error Analysis of a Tree Code", by -Joshua Barnes and Piet Hut, Astrophysical Journal Supplement, 70, 389, for -more information. - - The code has been rewritten in ANSI C for greater portability. Prototypes -have been provided for all functions. Several functions associated with tree -construction have been simplified; the resulting code should be easier to -mantain. Force calculation has been made more accurate by incorporating a new -opening-angle criterion, and faster by adding additional pointers to the tree -structure. Quadrupole corrections for body-cell interactions are now included -as a run-time option; see "Performance Characteristics of Tree Codes", by Lars -Hernquist, Astrophysical Journal Supplement, 64, 715. - - The source files for the tree code have been bundled together for ease of -distribution. On a UNIX system, you can split this file simply by invoking -the Bourne shell on it (use the sh command). On other systems, you may have -to edit this file and split it up by hand; note that file X is delimited by -lines containing the message End of X. Once you have split this file, you can -compile it by running make on a UNIX system. On other systems, you are on -your own; take a look at the Makefile for hints. Running the program with the -default input parameters (type a <CR> to all prompts) will start a short -calculation with a few particles to test things out. - - These sources include a few files which you may find generally useful: -"stdinc.h", a standard include file with common definitions, "vectmath.h", a -set of macros for elementary vector and matrix operations, "real.h", a set of -definitions for floating-point code, "getparam.c", a simple, standardized user -interface, and "util.c", some miscellaneous utilities. These are part of a -larger collection of software for numerical experiments with gravitating -systems. - - NO WARRANTY is offered on the software supplied here -- use it at your own -risk. NO RESTRICTIONS are imposed on use and distribution of the code -- you -are free to use this software for any application, modify it in any way, use -pieces in other programs, and give it away to anyone else. You are encouraged -to extend these rights to others who receive this software from you, following -the philosophy and intentions of the Free Software Foundation. - - You are asked to include a brief acknowledgement in any scientific papers -you write using this code; I would appreciate receiving preprints or reprints -of such papers. I would also appreciate receiving reports of bugs and/or -problems encountered in porting this code to other machines. - - Have fun and stay in touch. - - Joshua E. Barnes barnes@zeno.ifa.hawaii.edu - - Institute for Astronomy (808) 956-8138 - University of Hawaii - 2680 Woodlawn Drive - Honolulu, Hawaii 96822 - -README README README README README README README README README README |