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-rw-r--r--toys/seq.c48
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diff --git a/toys/seq.c b/toys/seq.c
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-/* vi: set sw=4 ts=4:
- *
- * seq.c - Count from first to last, by increment.
- *
- * Copyright 2006 Rob Landley <rob@landley.net>
- *
- * Not in SUSv3. (Don't ask me why not.)
-
-USE_SEQ(NEWTOY(seq, "<1>3?", TOYFLAG_USR|TOYFLAG_BIN))
-
-config SEQ
- bool "seq"
- depends on TOYBOX_FLOAT
- default y
- help
- 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);
- default:
- 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);
- dd+=increment)
- {
- printf("%g\n", dd);
- }
-}