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S2CI(1) General Commands Manual S2CI(1) NAME
s2ci - Scheme interpreter SYNTAX
s2ci [ option ] DESCRIPTION
The s2ci command (previously known as sci) invokes a Scheme interpreter. The language accepted by this interpreter is that defined in the essential portions of the Revised4 Report on the Algorithmic Language Scheme, with minor constraints and some additions. The Scheme inter- preter is written in Scheme which has then been compiled using the Scheme-to-C compiler, s2cc. OPTIONS
These options are accepted by s2ci. -e Echo text read from the standard input file on the standard output file. -emacs Scheme interpreter is controlled by GNU emacs. -nh Do not print the interpreter version header on the standard output file. -np Do not prompt for input from the standard input file on the standard output file. -q Do not print the result of each expression evaluation. -scgc statflag Enables garbage collection statistics. If set to 1, then garbage collection statistics will be printed. The default is 0, that will result in no statistics. -sch heap Specifies the initial size of the heap in megabytes. The default heap size is 4 MB. The maximum heap size allowed is 1000 MB. -scl percent Specifies the percent of the heap allocated after a generational garbage collection that will force a full collection. The default is 40%. -scm main Specifies the function that should be used instead of the predefined "main". The function name must be entered in the cor- rect case, i.e. letters typically upshifted. -scmh heap Specifies the maximum heap size in megabytes. The default is five times the initial size of the heap. ENVIRONMENT VARIABLES
The items controlled by -sc.. flags can also be controlled by environment variables. If both the flag and the environment variable are provided, then the flag's value will be used. SCGCINFO Controls the reporting of garbage collection statistics to the standard error file. If set to 1, then garbage collection statistics will be printed. The default setting is 0 that will not print the statistics. SCHEAP Specifies the initial size of the heap in megabytes. The default heap size is 4 MB. The maximum heap size allowed is 1000 MB. SCLIMIT Specifies the percent of the heap allocated after a generational garbage collection that will force a full collection. The default is 40%. SCMAXHEAP Specifies the maximum size of the heap in megabytes. The default value is five times the initial heap size. FILES
The interpreter is one a.out file with the name s2ci. All files associated with the interpreter are found in the directory .../scheme- toc/scrt. SEE ALSO
Harold Abelson and Gerald Jay Sussman with Julie Sussman, Structure and Interpretation of Computer Programs, The MIT Press. William Clinger and Jonathan Rees (Editors), Revised4 Report on the Algorithmic Language Scheme, LISP Pointers, Volume IV, Number 3, July- September 1991. PostScript for this report is included in the software distribution. Jerry D. Smith, An Introduction to Scheme, Prentice Hall, Inc. Chapter notes for using this text with Scheme->C are included in the soft- ware distribution. R. Kent Dybvig, The SCHEME Programming Language, Prentice Hall, Inc. Daniel P. Friedman and Matthias Felleisen, The Little LISPer, MIT Press. Joel F. Bartlett, Scheme->C a Portable Scheme-to-C Compiler, WRL Research Report 89/1. Additional documentation is included in the software distribution. s2cc(1) QUESTIONS, COMMENTS, AND COMPLAINTS http://alioth.debian.org/projects/scheme2c/ local S2CI(1)
