| 1 | /*
|
|---|
| 2 | * Copyright (c) 2011 Petr Koupy
|
|---|
| 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 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup softint
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /**
|
|---|
| 33 | * @file Signed and unsigned comparisons.
|
|---|
| 34 | */
|
|---|
| 35 |
|
|---|
| 36 | #include <alias.h>
|
|---|
| 37 | #include <comparison.h>
|
|---|
| 38 | #include <lltype.h>
|
|---|
| 39 |
|
|---|
| 40 | #define LESSER 0;
|
|---|
| 41 | #define EQUAL 1;
|
|---|
| 42 | #define GREATER 2;
|
|---|
| 43 |
|
|---|
| 44 | int __cmpti2 (long long a, long long b)
|
|---|
| 45 | {
|
|---|
| 46 | union lltype lla;
|
|---|
| 47 | union lltype llb;
|
|---|
| 48 |
|
|---|
| 49 | lla.s_whole = a;
|
|---|
| 50 | llb.s_whole = b;
|
|---|
| 51 |
|
|---|
| 52 | if (lla.s_half[HI] < llb.s_half[HI]) {
|
|---|
| 53 | return LESSER;
|
|---|
| 54 | } else if (lla.s_half[HI] > llb.s_half[HI]) {
|
|---|
| 55 | return GREATER;
|
|---|
| 56 | } else {
|
|---|
| 57 | if (lla.u_half[LO] < llb.u_half[LO]) {
|
|---|
| 58 | return LESSER;
|
|---|
| 59 | } else if (lla.u_half[LO] > llb.u_half[LO]) {
|
|---|
| 60 | return GREATER;
|
|---|
| 61 | } else {
|
|---|
| 62 | return EQUAL;
|
|---|
| 63 | }
|
|---|
| 64 | }
|
|---|
| 65 | }
|
|---|
| 66 |
|
|---|
| 67 | int __ucmpti2 (unsigned long long a, unsigned long long b)
|
|---|
| 68 | {
|
|---|
| 69 | union lltype lla;
|
|---|
| 70 | union lltype llb;
|
|---|
| 71 |
|
|---|
| 72 | lla.u_whole = a;
|
|---|
| 73 | llb.u_whole = b;
|
|---|
| 74 |
|
|---|
| 75 | if (lla.u_half[HI] < llb.u_half[HI]) {
|
|---|
| 76 | return LESSER;
|
|---|
| 77 | } else if (lla.u_half[HI] > llb.u_half[HI]) {
|
|---|
| 78 | return GREATER;
|
|---|
| 79 | } else {
|
|---|
| 80 | if (lla.u_half[LO] < llb.u_half[LO]) {
|
|---|
| 81 | return LESSER;
|
|---|
| 82 | } else if (lla.u_half[LO] > llb.u_half[LO]) {
|
|---|
| 83 | return GREATER;
|
|---|
| 84 | } else {
|
|---|
| 85 | return EQUAL;
|
|---|
| 86 | }
|
|---|
| 87 | }
|
|---|
| 88 | }
|
|---|
| 89 |
|
|---|
| 90 | #if LONG_MAX == LLONG_MAX
|
|---|
| 91 | int ALIAS(__cmp, i2);
|
|---|
| 92 | int ALIAS(__ucmp, i2);
|
|---|
| 93 | #else
|
|---|
| 94 |
|
|---|
| 95 | int __cmpdi2(long a, long b)
|
|---|
| 96 | {
|
|---|
| 97 | if ((int)a < (int)b) {
|
|---|
| 98 | return LESSER;
|
|---|
| 99 | } else if ((int)a > (int)b) {
|
|---|
| 100 | return GREATER;
|
|---|
| 101 | } else {
|
|---|
| 102 | return EQUAL;
|
|---|
| 103 | }
|
|---|
| 104 | }
|
|---|
| 105 |
|
|---|
| 106 | int __ucmpdi2(unsigned long a, unsigned long b)
|
|---|
| 107 | {
|
|---|
| 108 | if ((int)a < (int)b) {
|
|---|
| 109 | return LESSER;
|
|---|
| 110 | } else if ((int)a > (int)b) {
|
|---|
| 111 | return GREATER;
|
|---|
| 112 | } else {
|
|---|
| 113 | return EQUAL;
|
|---|
| 114 | }
|
|---|
| 115 | }
|
|---|
| 116 |
|
|---|
| 117 | #endif
|
|---|
| 118 |
|
|---|
| 119 | /** @}
|
|---|
| 120 | */
|
|---|
