/src/gmp-6.2.1/mpz/aors.h
Line | Count | Source |
1 | | /* mpz_add, mpz_sub -- add or subtract integers. |
2 | | |
3 | | Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2011, 2012 Free Software |
4 | | Foundation, Inc. |
5 | | |
6 | | This file is part of the GNU MP Library. |
7 | | |
8 | | The GNU MP Library is free software; you can redistribute it and/or modify |
9 | | it under the terms of either: |
10 | | |
11 | | * the GNU Lesser General Public License as published by the Free |
12 | | Software Foundation; either version 3 of the License, or (at your |
13 | | option) any later version. |
14 | | |
15 | | or |
16 | | |
17 | | * the GNU General Public License as published by the Free Software |
18 | | Foundation; either version 2 of the License, or (at your option) any |
19 | | later version. |
20 | | |
21 | | or both in parallel, as here. |
22 | | |
23 | | The GNU MP Library is distributed in the hope that it will be useful, but |
24 | | WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
25 | | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
26 | | for more details. |
27 | | |
28 | | You should have received copies of the GNU General Public License and the |
29 | | GNU Lesser General Public License along with the GNU MP Library. If not, |
30 | | see https://www.gnu.org/licenses/. */ |
31 | | |
32 | | #include "gmp-impl.h" |
33 | | |
34 | | |
35 | | #ifdef OPERATION_add |
36 | | #define FUNCTION mpz_add |
37 | | #define VARIATION |
38 | | #endif |
39 | | #ifdef OPERATION_sub |
40 | | #define FUNCTION mpz_sub |
41 | 711k | #define VARIATION - |
42 | | #endif |
43 | | |
44 | | #ifndef FUNCTION |
45 | | Error, need OPERATION_add or OPERATION_sub |
46 | | #endif |
47 | | |
48 | | |
49 | | void |
50 | | FUNCTION (mpz_ptr w, mpz_srcptr u, mpz_srcptr v) |
51 | 713k | { |
52 | 713k | mp_srcptr up, vp; |
53 | 713k | mp_ptr wp; |
54 | 713k | mp_size_t usize, vsize, wsize; |
55 | 713k | mp_size_t abs_usize; |
56 | 713k | mp_size_t abs_vsize; |
57 | | |
58 | 713k | usize = SIZ(u); |
59 | 713k | vsize = VARIATION SIZ(v); |
60 | 713k | abs_usize = ABS (usize); |
61 | 713k | abs_vsize = ABS (vsize); |
62 | | |
63 | 713k | if (abs_usize < abs_vsize) |
64 | 39.7k | { |
65 | | /* Swap U and V. */ |
66 | 39.7k | MPZ_SRCPTR_SWAP (u, v); |
67 | 39.7k | MP_SIZE_T_SWAP (usize, vsize); |
68 | 39.7k | MP_SIZE_T_SWAP (abs_usize, abs_vsize); |
69 | 39.7k | } |
70 | | |
71 | | /* True: ABS_USIZE >= ABS_VSIZE. */ |
72 | | |
73 | | /* If not space for w (and possible carry), increase space. */ |
74 | 713k | wsize = abs_usize + 1; |
75 | 713k | wp = MPZ_REALLOC (w, wsize); |
76 | | |
77 | | /* These must be after realloc (u or v may be the same as w). */ |
78 | 713k | up = PTR(u); |
79 | 713k | vp = PTR(v); |
80 | | |
81 | 713k | if ((usize ^ vsize) < 0) |
82 | 532k | { |
83 | | /* U and V have different sign. Need to compare them to determine |
84 | | which operand to subtract from which. */ |
85 | | |
86 | | /* This test is right since ABS_USIZE >= ABS_VSIZE. */ |
87 | 532k | if (abs_usize != abs_vsize) |
88 | 53.1k | { |
89 | 53.1k | mpn_sub (wp, up, abs_usize, vp, abs_vsize); |
90 | 53.1k | wsize = abs_usize; |
91 | 53.1k | MPN_NORMALIZE (wp, wsize); |
92 | 53.1k | if (usize < 0) |
93 | 28.9k | wsize = -wsize; |
94 | 53.1k | } |
95 | 479k | else if (mpn_cmp (up, vp, abs_usize) < 0) |
96 | 279k | { |
97 | 279k | mpn_sub_n (wp, vp, up, abs_usize); |
98 | 279k | wsize = abs_usize; |
99 | 279k | MPN_NORMALIZE (wp, wsize); |
100 | 279k | if (usize >= 0) |
101 | 204k | wsize = -wsize; |
102 | 279k | } |
103 | 200k | else |
104 | 200k | { |
105 | 200k | mpn_sub_n (wp, up, vp, abs_usize); |
106 | 200k | wsize = abs_usize; |
107 | 200k | MPN_NORMALIZE (wp, wsize); |
108 | 200k | if (usize < 0) |
109 | 59.7k | wsize = -wsize; |
110 | 200k | } |
111 | 532k | } |
112 | 181k | else |
113 | 181k | { |
114 | | /* U and V have same sign. Add them. */ |
115 | 181k | mp_limb_t cy_limb = mpn_add (wp, up, abs_usize, vp, abs_vsize); |
116 | 181k | wp[abs_usize] = cy_limb; |
117 | 181k | wsize = abs_usize + cy_limb; |
118 | 181k | if (usize < 0) |
119 | 95.9k | wsize = -wsize; |
120 | 181k | } |
121 | | |
122 | 713k | SIZ(w) = wsize; |
123 | 713k | } Line | Count | Source | 51 | 2.52k | { | 52 | 2.52k | mp_srcptr up, vp; | 53 | 2.52k | mp_ptr wp; | 54 | 2.52k | mp_size_t usize, vsize, wsize; | 55 | 2.52k | mp_size_t abs_usize; | 56 | 2.52k | mp_size_t abs_vsize; | 57 | | | 58 | 2.52k | usize = SIZ(u); | 59 | 2.52k | vsize = VARIATION SIZ(v); | 60 | 2.52k | abs_usize = ABS (usize); | 61 | 2.52k | abs_vsize = ABS (vsize); | 62 | | | 63 | 2.52k | if (abs_usize < abs_vsize) | 64 | 192 | { | 65 | | /* Swap U and V. */ | 66 | 192 | MPZ_SRCPTR_SWAP (u, v); | 67 | 192 | MP_SIZE_T_SWAP (usize, vsize); | 68 | 192 | MP_SIZE_T_SWAP (abs_usize, abs_vsize); | 69 | 192 | } | 70 | | | 71 | | /* True: ABS_USIZE >= ABS_VSIZE. */ | 72 | | | 73 | | /* If not space for w (and possible carry), increase space. */ | 74 | 2.52k | wsize = abs_usize + 1; | 75 | 2.52k | wp = MPZ_REALLOC (w, wsize); | 76 | | | 77 | | /* These must be after realloc (u or v may be the same as w). */ | 78 | 2.52k | up = PTR(u); | 79 | 2.52k | vp = PTR(v); | 80 | | | 81 | 2.52k | if ((usize ^ vsize) < 0) | 82 | 609 | { | 83 | | /* U and V have different sign. Need to compare them to determine | 84 | | which operand to subtract from which. */ | 85 | | | 86 | | /* This test is right since ABS_USIZE >= ABS_VSIZE. */ | 87 | 609 | if (abs_usize != abs_vsize) | 88 | 154 | { | 89 | 154 | mpn_sub (wp, up, abs_usize, vp, abs_vsize); | 90 | 154 | wsize = abs_usize; | 91 | 154 | MPN_NORMALIZE (wp, wsize); | 92 | 154 | if (usize < 0) | 93 | 49 | wsize = -wsize; | 94 | 154 | } | 95 | 455 | else if (mpn_cmp (up, vp, abs_usize) < 0) | 96 | 398 | { | 97 | 398 | mpn_sub_n (wp, vp, up, abs_usize); | 98 | 398 | wsize = abs_usize; | 99 | 398 | MPN_NORMALIZE (wp, wsize); | 100 | 398 | if (usize >= 0) | 101 | 72 | wsize = -wsize; | 102 | 398 | } | 103 | 57 | else | 104 | 57 | { | 105 | 57 | mpn_sub_n (wp, up, vp, abs_usize); | 106 | 57 | wsize = abs_usize; | 107 | 57 | MPN_NORMALIZE (wp, wsize); | 108 | 57 | if (usize < 0) | 109 | 38 | wsize = -wsize; | 110 | 57 | } | 111 | 609 | } | 112 | 1.92k | else | 113 | 1.92k | { | 114 | | /* U and V have same sign. Add them. */ | 115 | 1.92k | mp_limb_t cy_limb = mpn_add (wp, up, abs_usize, vp, abs_vsize); | 116 | 1.92k | wp[abs_usize] = cy_limb; | 117 | 1.92k | wsize = abs_usize + cy_limb; | 118 | 1.92k | if (usize < 0) | 119 | 112 | wsize = -wsize; | 120 | 1.92k | } | 121 | | | 122 | 2.52k | SIZ(w) = wsize; | 123 | 2.52k | } |
Line | Count | Source | 51 | 711k | { | 52 | 711k | mp_srcptr up, vp; | 53 | 711k | mp_ptr wp; | 54 | 711k | mp_size_t usize, vsize, wsize; | 55 | 711k | mp_size_t abs_usize; | 56 | 711k | mp_size_t abs_vsize; | 57 | | | 58 | 711k | usize = SIZ(u); | 59 | 711k | vsize = VARIATION SIZ(v); | 60 | 711k | abs_usize = ABS (usize); | 61 | 711k | abs_vsize = ABS (vsize); | 62 | | | 63 | 711k | if (abs_usize < abs_vsize) | 64 | 39.6k | { | 65 | | /* Swap U and V. */ | 66 | 39.6k | MPZ_SRCPTR_SWAP (u, v); | 67 | 39.6k | MP_SIZE_T_SWAP (usize, vsize); | 68 | 39.6k | MP_SIZE_T_SWAP (abs_usize, abs_vsize); | 69 | 39.6k | } | 70 | | | 71 | | /* True: ABS_USIZE >= ABS_VSIZE. */ | 72 | | | 73 | | /* If not space for w (and possible carry), increase space. */ | 74 | 711k | wsize = abs_usize + 1; | 75 | 711k | wp = MPZ_REALLOC (w, wsize); | 76 | | | 77 | | /* These must be after realloc (u or v may be the same as w). */ | 78 | 711k | up = PTR(u); | 79 | 711k | vp = PTR(v); | 80 | | | 81 | 711k | if ((usize ^ vsize) < 0) | 82 | 531k | { | 83 | | /* U and V have different sign. Need to compare them to determine | 84 | | which operand to subtract from which. */ | 85 | | | 86 | | /* This test is right since ABS_USIZE >= ABS_VSIZE. */ | 87 | 531k | if (abs_usize != abs_vsize) | 88 | 53.0k | { | 89 | 53.0k | mpn_sub (wp, up, abs_usize, vp, abs_vsize); | 90 | 53.0k | wsize = abs_usize; | 91 | 53.0k | MPN_NORMALIZE (wp, wsize); | 92 | 53.0k | if (usize < 0) | 93 | 28.8k | wsize = -wsize; | 94 | 53.0k | } | 95 | 478k | else if (mpn_cmp (up, vp, abs_usize) < 0) | 96 | 278k | { | 97 | 278k | mpn_sub_n (wp, vp, up, abs_usize); | 98 | 278k | wsize = abs_usize; | 99 | 278k | MPN_NORMALIZE (wp, wsize); | 100 | 278k | if (usize >= 0) | 101 | 204k | wsize = -wsize; | 102 | 278k | } | 103 | 200k | else | 104 | 200k | { | 105 | 200k | mpn_sub_n (wp, up, vp, abs_usize); | 106 | 200k | wsize = abs_usize; | 107 | 200k | MPN_NORMALIZE (wp, wsize); | 108 | 200k | if (usize < 0) | 109 | 59.7k | wsize = -wsize; | 110 | 200k | } | 111 | 531k | } | 112 | 179k | else | 113 | 179k | { | 114 | | /* U and V have same sign. Add them. */ | 115 | 179k | mp_limb_t cy_limb = mpn_add (wp, up, abs_usize, vp, abs_vsize); | 116 | 179k | wp[abs_usize] = cy_limb; | 117 | 179k | wsize = abs_usize + cy_limb; | 118 | 179k | if (usize < 0) | 119 | 95.8k | wsize = -wsize; | 120 | 179k | } | 121 | | | 122 | 711k | SIZ(w) = wsize; | 123 | 711k | } |
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