33 lines
694 B
C
33 lines
694 B
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* This file is part of ToaruOS and is released under the terms
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* of the NCSA / University of Illinois License - see LICENSE.md
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* Copyright (C) 2013 K. Lange
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*
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* sleep - Do nothing, efficiently.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <syscall.h>
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#include <string.h>
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int main(int argc, char ** argv) {
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int ret = 0;
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if (argc < 2) {
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fprintf(stderr, "%s: missing operand\n", argv[0]);
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return 1;
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}
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char * arg = strdup(argv[1]);
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float time = atof(arg);
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unsigned int seconds = (unsigned int)time;
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unsigned int subsecs = (unsigned int)((time - (float)seconds) * 100);
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ret = syscall_sleep(seconds, subsecs);
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return ret;
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}
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