Standard Library

prefix_comment

DOCUMENT prefix_comment(line)
  the default comment detector function for prefix_read, makes
  blank lines and any line beginning with "#" as its first non-blank
  character a comment.

prefix_find

DOCUMENT prefix_find(f, prefix)
  scan to the first line of text file F which begins with the
  blank delimited prefix PREFIX.  (You may specify other delimiters
  by giving prefix_find a DELIMIT keyword, whose value will be
  passed to the strtok function.)  The return value is 1 if such
  a line was found, 0 if not.  In the first case, F will be positioned
  to reread the prefixed line; in the second case, F will be at the
  end-of-file.

SEE ALSO: prefix_read, prefix_write, strtok

prefix_read

DOCUMENT value_array= prefix_read(f, prefix)
  reads lines of text file F which begin with the blank delimited
  prefix PREFIX.  (You may specify other delimiters by giving
  prefix_read a DELIMIT keyword, whose value will be passed to the
  strtok function.)  Stops when a line not beginning with that
  prefix is encountered.  You may also supply a COMMENT keyword,
  which should be a function accepting a string argument and
  returning 0 to indicate that the line is not a comment line,
  and 1 to indicate that it is a comment.  By default, blank lines
  and lines beginning with "#" are taken as comments and skipped.

  The returned VALUE_ARRAY is [] if no PREFIX lines were found,
  and an array of type double and length equal to the total number
  of numbers Ni:

    prefix N1 N2 N3 N4
    prefix N5 N6
    prefix ... Nn

SEE ALSO: prefix_find, prefix_write, prefix_comment, strtok

prefix_write

DOCUMENT prefix_read, f, prefix, value_array
  writes lines of text file F which begin with the prefix PREFIX:
  
    prefix N1 N2 N3 N4 N5
    prefix N6 N7 N8 N9 N10
    prefix N11 N12

  The format is %14.6e by default, but you can adjust the ".6" by
  specifying an NDIGITS keyword (6 is the default).

  Yorick will put as many numbers as fit within 79 characters by
  default, and each successive line begins with PREFIX.  You can
  change this default line width by specifying a WIDTH keyword
  (default 79).

SEE ALSO: prefix_find, prefix_read