Diff of /trunk/mkinitrd-magellan/busybox/libbb/human_readable.c

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	revision 815 by niro, Sat Sep 1 22:45:15 2007 UTC	revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
#	Line 26	Line 26
26	*      and "#if 0"'d below.	*      and "#if 0"'d below.
27	*/	*/
28
	#include <stdio.h>
29	#include "libbb.h"	#include "libbb.h"
30
31	const char *make_human_readable_str(unsigned long long size,	const char* FAST_FUNC make_human_readable_str(unsigned long long size,
32	unsigned long block_size, unsigned long display_unit)	unsigned long block_size, unsigned long display_unit)
33	{	{
34	/* The code will adjust for additional (appended) units. */	/* The code will adjust for additional (appended) units */
35	static const char zero_and_units[] = { '0', 0, 'k', 'M', 'G', 'T' };	static const char unit_chars[] ALIGN1 = {
36	static const char fmt[] = "%llu";	'\0', 'K', 'M', 'G', 'T', 'P', 'E'
37	static const char fmt_tenths[] = "%llu.%d%c";	};
38		static const char fmt[] ALIGN1 = "%llu";
39		static const char fmt_tenths[] ALIGN1 = "%llu.%d%c";
40
41	static char str[21]; /* Sufficient for 64 bit unsigned integers. */	static char str[21] ALIGN1;  /* Sufficient for 64 bit unsigned integers */
42
43	unsigned long long val;	unsigned long long val;
44	int frac;	int frac;
45	const char *u;	const char *u;
46	const char *f;	const char *f;
47		smallint no_tenths;
48
49	u = zero_and_units;	if (size == 0)
50	f = fmt;	return "0";
	frac = 0;
51
52	val = size * block_size;	/* If block_size is 0 then do not print tenths */
53	if (val == 0) {	no_tenths = 0;
54	return u;	if (block_size == 0) {
55		no_tenths = 1;
56		block_size = 1;
57	}	}
58
59		u = unit_chars;
60		val = size * block_size;
61		f = fmt;
62		frac = 0;
63
64	if (display_unit) {	if (display_unit) {
65	val += display_unit/2; /* Deal with rounding. */	val += display_unit/2; /* Deal with rounding */
66	val /= display_unit; /* Don't combine with the line above!!! */	val /= display_unit; /* Don't combine with the line above!!! */
67		/* will just print it as ulonglong (below) */
68	} else {	} else {
	++u;
69	while ((val >= 1024)	while ((val >= 1024)
70	&& (u < zero_and_units + sizeof(zero_and_units) - 1)	&& (u < unit_chars + sizeof(unit_chars) - 1)
71	) {	) {
72	f = fmt_tenths;	f = fmt_tenths;
73	++u;	u++;
74	frac = (((int)(val % 1024)) * 10 + 1024/2) / 1024;	frac = (((int)(val % 1024)) * 10 + 1024/2) / 1024;
75	val /= 1024;	val /= 1024;
76	}	}
#	Line 70  const char *make_human_readable_str(unsi	Line 78  const char *make_human_readable_str(unsi
78	++val;	++val;
79	frac = 0;	frac = 0;
80	}	}
81	#if 0	#if 1
82	/* Sample code to omit decimal point and tenths digit. */	/* Sample code to omit decimal point and tenths digit. */
83	if ( /* no_tenths */ 1 ) {	if (no_tenths) {
84	if ( frac >= 5 ) {	if (frac >= 5) {
85	++val;	++val;
86	}	}
87	f = "%llu%*c" /* fmt_no_tenths */ ;	f = "%llu%*c" /* fmt_no_tenths */;
88	frac = 1;	frac = 1;
89	}	}
90	#endif	#endif

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