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48 lines
1004 B
C
48 lines
1004 B
C
/* vi: set sw=4 ts=4: */
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/*
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* seq implementation for busybox
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*
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* Copyright (C) 2004, Glenn McGrath
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*
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* Licensed under the GPL v2, see the file LICENSE in this tarball.
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*/
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#include "libbb.h"
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/* This is a NOFORK applet. Be very careful! */
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int seq_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int seq_main(int argc, char **argv)
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{
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double last, increment, i;
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enum { OPT_w = 1 };
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unsigned opt = getopt32(argv, "+w");
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unsigned width = 0;
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argc -= optind;
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argv += optind;
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i = increment = 1;
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switch (argc) {
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case 3:
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increment = atof(argv[1]);
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case 2:
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i = atof(*argv);
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case 1:
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last = atof(argv[argc-1]);
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break;
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default:
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bb_show_usage();
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}
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if (opt & OPT_w) /* Pad to length of start or last */
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width = MAX(strlen(*argv), strlen(argv[argc-1]));
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/* You should note that this is pos-5.0.91 semantics, -- FK. */
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while ((increment > 0 && i <= last) || (increment < 0 && i >= last)) {
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printf("%0*g\n", width, i);
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i += increment;
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}
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return fflush(stdout);
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}
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