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From: ForthNet@willett.pgh.pa.us (ForthNet articles from GEnie)
Newsgroups: comp.lang.forth
Subject: ANS FORTH TECHNICAL COMMITTEE
Message-ID: <1625.UUL1.3#5129@willett.pgh.pa.us>
Date: 29 Aug 90 02:38:26 GMT
Organization: String, Scotch tape, and Paperclips.  (in Pgh, PA)
Lines: 70

Category 10,  Topic 2
Message 230       Tue Aug 28, 1990
D.RUFFER [Dennis]            at 01:00 EDT
 
Re: B.RODRIGUEZ2 [Brad R.]

 > what's this ENVIRONMENT? thing which takes a string argument?

7.1345 ENVIRONMENT?[730]     "environment-query"          CORE

                ( b-addr u -- value true ) (known)
                       or  -- false )      (unknown)

b-addr is the address of a text string and [ED] u is the string's character
count.  u may have a value in the range from 0 to an implementation-defined
maximum which may not be less than 31. The text string should contain [ED] a
keyword from the table below [ED] to be checked for correspondence with an
attribute of the present environment.  If the system treats the attribute [ED]
as unknown, the returned flag is false;  otherwise, the flag is true and the
value returned is of the type specified in the table for the attribute
queried. [ED]

 Name            Type Interpretation

 /ALIGN             n alignment granularity, in address units of an
                      aligned address.
 /CHAR              n size of a character in address units
 /COUNTED-STRING    n maximum number of characters in a counted
                      string
 /DATA-SPACE        n size of the aligned data space in address units
 /HOLD              n maximum size of a pictured numeric output
                      string in address units
 /PAD               n size of the scratch area pointed to by PAD,
                      in address units
 /TIB               n size of the text input buffer in address units
 ADDRESS-UNIT-BITS  n Size of one address unit in bits
 BLOCK           flag block word set present
 BLOCK-EXT       flag block extension word set present
 CORE            flag core word set present
 CORE-EXT        flag core extension word set present
 DOUBLE          flag double number word set present
 DOUBLE-EXT      flag double extension word set present
 FAR-MEMORY      flag far memory word set present
 FAR-MEMORY-EXT  flag far memory extension word set present
 FILE            flag file word set present
 FILE-EXT        flag file extension word set present
 FLOATING        flag floating-point word set present
 FLOATING-EXT    flag floating-point extension word set present
 FULL            flag full compliance
 LOCALS          flag locals word set present
 LOCALS-EXT      flag locals extension word set present
 MAX-D              d the largest usable signed double number
 MAX-FLOAT          r the largest usable floating-point number
 MAX-N              n the largest usable signed integer
 MAX-U              u the largest usable unsigned integer
 MAX-UD            ud the largest usable unsigned double number
 MEMORY-ALLOC    flag memory allocation word set present
 MEMORY-ALLOC-EXTflag memory allocation extension word set present
 RETURN-STACK-CELLS n the maximum size of the return stack in cells
 SEARCH-ORDER    flag search order word set present
 SEARCH-ORDER-EXTflag search order extension word set present
 STACK-CELLS        n the maximum size of the data stack in cells
 STRING          flag string word set present
 STRING-EXT      flag string extension word set present
 WORDLISTS          n the maximum number of wordlists usable in a
                      fixed search order

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