GNU Octave  4.2.1
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
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lo-macros.h
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1 /*
2 
3 Copyright (C) 2010-2017 VZLU Prague
4 
5 This file is part of Octave.
6 
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
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17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, see
19 <http://www.gnu.org/licenses/>.
20 
21 */
22 
23 #if ! defined (octave_lo_macros_h)
24 #define octave_lo_macros_h 1
25 
26 #include "octave-config.h"
27 
28 // Core macros. Iteration is supported up to count 10.
29 
30 #define OCT_ITERATE_PARAM_MACRO0(MACRO, PARAM)
31 #define OCT_ITERATE_PARAM_MACRO1(MACRO, PARAM) \
32  MACRO(0, PARAM)
33 #define OCT_ITERATE_PARAM_MACRO2(MACRO, PARAM) \
34  MACRO(0, PARAM) MACRO(1, PARAM)
35 #define OCT_ITERATE_PARAM_MACRO3(MACRO, PARAM) \
36  MACRO(0, PARAM) MACRO(1, PARAM) MACRO(2, PARAM)
37 #define OCT_ITERATE_PARAM_MACRO4(MACRO, PARAM) \
38  MACRO(0, PARAM) MACRO(1, PARAM) MACRO(2, PARAM) MACRO(3, PARAM)
39 #define OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) \
40  MACRO(0, PARAM) MACRO(1, PARAM) MACRO(2, PARAM) MACRO(3, PARAM) MACRO(4, PARAM)
41 #define OCT_ITERATE_PARAM_MACRO6(MACRO, PARAM) \
42  OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) MACRO(5, PARAM)
43 #define OCT_ITERATE_PARAM_MACRO7(MACRO, PARAM) \
44  OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) MACRO(5, PARAM) MACRO(6, PARAM)
45 #define OCT_ITERATE_PARAM_MACRO8(MACRO, PARAM) \
46  OCT_ITERATE_PARAM_MACRO5(MACRO, PARAM) MACRO(5, PARAM) MACRO(6, PARAM) MACRO(7, PARAM)
47 #define OCT_ITERATE_PARAM_MACRO9(MACRO, PARAM) \
48  OCT_ITERATE_PARAM_MACRO8(MACRO, PARAM) MACRO(8, PARAM)
49 #define OCT_ITERATE_PARAM_MACRO10(MACRO, PARAM) \
50  OCT_ITERATE_PARAM_MACRO8(MACRO, PARAM) MACRO(8, PARAM) MACRO(9, PARAM)
51 
52 // expands to MACRO(0, PARAM) MACRO(1, PARAM) ... MACRO(NUM-1, PARAM)
53 #define OCT_ITERATE_PARAM_MACRO(MACRO, PARAM, NUM) \
54  OCT_ITERATE_PARAM_MACRO##NUM(MACRO,PARAM)
55 
56 #define OCT_IF_PARAM0(MACRO, PARAM)
57 #define OCT_IF_PARAM1(MACRO, PARAM) MACRO(PARAM)
58 #define OCT_IF_PARAM2(MACRO, PARAM) MACRO(PARAM)
59 #define OCT_IF_PARAM3(MACRO, PARAM) MACRO(PARAM)
60 #define OCT_IF_PARAM4(MACRO, PARAM) MACRO(PARAM)
61 #define OCT_IF_PARAM5(MACRO, PARAM) MACRO(PARAM)
62 #define OCT_IF_PARAM6(MACRO, PARAM) MACRO(PARAM)
63 #define OCT_IF_PARAM7(MACRO, PARAM) MACRO(PARAM)
64 #define OCT_IF_PARAM8(MACRO, PARAM) MACRO(PARAM)
65 #define OCT_IF_PARAM9(MACRO, PARAM) MACRO(PARAM)
66 
67 // expands to MACRO(PARAM) if NUM > 0
68 #define OCT_IF_PARAM(NUM, MACRO, PARAM) OCT_IF_PARAM##NUM(MACRO, PARAM)
69 
70 // concatenation and reverse concat
71 #define OCT_CONCAT2(ARG1, ARG2) ARG1 ## ARG2
72 #define OCT_CONCAT2_REVERSE(ARG1, ARG2) ARG2 ## ARG1
73 
74 #define OCT_IF_HELPER(X) X
75 
76 // expands to X if NUM > 0
77 #define OCT_IF(NUM, X) OCT_IF_PARAM(NUM, OCT_IF_HELPER, X)
78 
79 #define OCT_ITERATE_MACRO_HELPER(NUM, MACRO) MACRO(NUM)
80 
81 // expands to MACRO(0) ... MACRO(NUM-1)
82 #define OCT_ITERATE_MACRO(MACRO, NUM) OCT_ITERATE_PARAM_MACRO(OCT_ITERATE_MACRO_HELPER, MACRO, NUM)
83 
84 #define OCT_MAKE_LIST_HELPER1(ARG) ARG,
85 
86 // expands to MACRO(0), MACRO(1), ..., MACRO(NUM-1)
87 #define OCT_MAKE_LIST_HELPER(NUM, MACRO) OCT_IF_PARAM(NUM,OCT_MAKE_LIST_HELPER1,) MACRO(NUM)
88 
89 #define OCT_MAKE_LIST(MACRO, NUM) OCT_ITERATE_PARAM_MACRO(OCT_MAKE_LIST_HELPER, MACRO, NUM)
90 
91 #define OCT_MAKE_DECL_LIST_HELPER(NUM, PREFIX) \
92  OCT_IF_PARAM(NUM,OCT_MAKE_LIST_HELPER1,) OCT_CONCAT2(PREFIX, NUM)
93 
94 // expands to TYPE PREFIX0, TYPE PREFIX1, ..., TYPE PREFIX ## (NUM-1)
95 #define OCT_MAKE_DECL_LIST(TYPE, PREFIX, NUM) \
96  OCT_ITERATE_PARAM_MACRO(OCT_MAKE_DECL_LIST_HELPER, TYPE PREFIX, NUM)
97 
98 // expands to PREFIX0, PREFIX1, ..., PREFIX ## (NUM-1)
99 #define OCT_MAKE_ARG_LIST(PREFIX, NUM) \
100  OCT_ITERATE_PARAM_MACRO(OCT_MAKE_DECL_LIST_HELPER, PREFIX, NUM)
101 
102 #endif