| convtbl.c (164669) | convtbl.c (164671) |
|---|---|
| 1/* 2 * Copyright (c) 2003, Trent Nelson, <trent@arpa.com>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * | 1/* 2 * Copyright (c) 2003, Trent Nelson, <trent@arpa.com>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * |
| 28 * $FreeBSD: head/usr.bin/systat/convtbl.c 164669 2006-11-27 15:11:30Z yar $ | 28 * $FreeBSD: head/usr.bin/systat/convtbl.c 164671 2006-11-27 15:26:26Z yar $ |
| 29 */ 30 31#include <sys/types.h> 32#include <unistd.h> 33#include "convtbl.h" 34 35struct convtbl convtbl[] = { 36 /* mul, scale, str */ --- 8 unchanged lines hidden (view full) --- 45 [SC_GIGABIT] = { BIT, GIGA, "Gb" }, 46 47 [SC_AUTO] = { 0, 0, "" } 48}; 49 50 51static 52struct convtbl * | 29 */ 30 31#include <sys/types.h> 32#include <unistd.h> 33#include "convtbl.h" 34 35struct convtbl convtbl[] = { 36 /* mul, scale, str */ --- 8 unchanged lines hidden (view full) --- 45 [SC_GIGABIT] = { BIT, GIGA, "Gb" }, 46 47 [SC_AUTO] = { 0, 0, "" } 48}; 49 50 51static 52struct convtbl * |
| 53get_tbl_ptr(const u_long size, const u_int scale) | 53get_tbl_ptr(const uintmax_t size, const int scale) |
| 54{ | 54{ |
| 55 u_long tmp; 56 u_int idx; | 55 uintmax_t tmp; 56 int idx; |
| 57 58 /* If our index is out of range, default to auto-scaling. */ 59 idx = scale < SC_AUTO ? scale : SC_AUTO; 60 61 if (idx == SC_AUTO) 62 /* 63 * Simple but elegant algorithm. Count how many times 64 * we can shift our size value right by a factor of ten, 65 * incrementing an index each time. We then use the 66 * index as the array index into the conversion table. 67 */ 68 for (tmp = size, idx = SC_KILOBYTE; 69 tmp >= MEGA && idx < SC_GIGABYTE; 70 tmp >>= 10, idx++); 71 72 return (&convtbl[idx]); 73} 74 75double | 57 58 /* If our index is out of range, default to auto-scaling. */ 59 idx = scale < SC_AUTO ? scale : SC_AUTO; 60 61 if (idx == SC_AUTO) 62 /* 63 * Simple but elegant algorithm. Count how many times 64 * we can shift our size value right by a factor of ten, 65 * incrementing an index each time. We then use the 66 * index as the array index into the conversion table. 67 */ 68 for (tmp = size, idx = SC_KILOBYTE; 69 tmp >= MEGA && idx < SC_GIGABYTE; 70 tmp >>= 10, idx++); 71 72 return (&convtbl[idx]); 73} 74 75double |
| 76convert(const u_long size, const u_int scale) | 76convert(const uintmax_t size, const int scale) |
| 77{ 78 struct convtbl *tp; 79 80 tp = get_tbl_ptr(size, scale); 81 return ((double)size * tp->mul / tp->scale); 82 83} 84 85const char * | 77{ 78 struct convtbl *tp; 79 80 tp = get_tbl_ptr(size, scale); 81 return ((double)size * tp->mul / tp->scale); 82 83} 84 85const char * |
| 86get_string(const u_long size, const u_int scale) | 86get_string(const uintmax_t size, const int scale) |
| 87{ 88 struct convtbl *tp; 89 90 tp = get_tbl_ptr(size, scale); 91 return (tp->str); 92} | 87{ 88 struct convtbl *tp; 89 90 tp = get_tbl_ptr(size, scale); 91 return (tp->str); 92} |