-- Copyright (c) 1991-2002, The Numerical Algorithms Group Ltd.
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-- Copyright (C) 2007-2009, Gabriel Dos Reis.
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import pathname
namespace BOOT

-- some functions that may need to be changed on different lisp
-- systems.
 
-- RREAD which takes erroval to return if key is missing
rread(key,rstream,errorval) ==
  if ident? key then key := symbolName key
  RREAD(key,rstream,errorval)   

rwrite(key,val,stream) ==
  if ident? key then key := symbolName key
  RWRITE(key,val,stream) 

-- issuing commands to the operating system
 
system() ==
  -- VM version of system command
  string := getSystemCommandLine()
  if string is '"" then string := '"sh"
  sayMessage ['"   Return Code = ", runCommand string]
  terminateSystemCommand()

editFile file ==
  runCommand strconc(textEditor(),'" ",namestring pathname file)

update() ==
  runCommand
    strconc(textEditor(), '" ",STRINGIMAGE _/VERSION,'" ",STRINGIMAGE _/WSNAME,'" A")
  _/UPDATE()

makeBigFloat(mantissa,expon) ==
  [$BFtag,mantissa,:expon]