view toys/lsb/seq.c @ 694:786841fdb1e0

Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. The actual code should be the same afterward, this is just cosmetic refactoring.
author Rob Landley <>
date Tue, 13 Nov 2012 17:14:08 -0600
parents 6df4ccc0acbe
children 3e81cd0bad4b
line wrap: on
line source

/* seq.c - Count from first to last, by increment.
 * Copyright 2006 Rob Landley <>


config SEQ
  bool "seq"
  depends on TOYBOX_FLOAT
  default y
    usage: seq [first] [increment] last

    Count from first to last, by increment. Omitted arguments default
    to 1. Two arguments are used as first and last. Arguments can be
    negative or floating point.

#include "toys.h"

void seq_main(void)
  double first, increment, last, dd;

  // Parse command line arguments, with appropriate defaults.
  // Note that any non-numeric arguments are treated as zero.
  first = increment = 1;
  switch (toys.optc) {
    case 3:
      increment = atof(toys.optargs[1]);
    case 2:
      first = atof(*toys.optargs);
      last = atof(toys.optargs[toys.optc-1]);

  // Yes, we're looping on a double.  Yes rounding errors can accumulate if
  // you use a non-integer increment.  Deal with it.
  for (dd=first; (increment>0 && dd<=last) || (increment<0 && dd>=last);
    printf("%g\n", dd);