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	Update watch(1) to handle more accurate intervals - ubase - suckless linux base…
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	---
	commit 703e18185c38b869d8f001241aa6b33c832ff5dc
	parent 4cb108f557d6c34f22166430f853e64335e94461
	Author: sin <[email protected]>
	Date: Sun, 30 Nov 2014 14:03:25 +0000

	Update watch(1) to handle more accurate intervals

	Diffstat:
	M watch.c \| 14 ++++++++++----

	1 file changed, 10 insertions(+), 4 deletions(-)
	---
	diff --git a/watch.c b/watch.c
	@@ -1,4 +1,5 @@
	/* See LICENSE file for copyright and license details. */
	+#include <errno.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <unistd.h>
	@@ -15,14 +16,19 @@ int
	main(int argc, char *argv[])
	{
	char cmd[BUFSIZ];
	- int i, interval = 2;
	+ char *end;
	+ useconds_t interval = 2 * 1E6;
	+ float period;
	+ int i;

	ARGBEGIN {
	case 't':
	break;
	case 'n':
	- /* Only whole seconds for now */
	- interval = estrtol(EARGF(usage()), 10);
	+ period = strtof(EARGF(usage()), &end);
	+ if (*end != '\0' \|\| errno != 0)
	+ eprintf("invalid interval\n");
	+ interval = period * 1E6;
	break;
	default:
	usage();
	@@ -44,7 +50,7 @@ main(int argc, char *argv[])
	printf("\x1b[2J\x1b[H"); /* clear */
	fflush(NULL);
	system(cmd);
	- sleep(interval);
	+ usleep(interval);
	}
	return 0;
	}