/[escript]/trunk/esysUtils/src/maths.h
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Contents of /trunk/esysUtils/src/maths.h

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Revision 1804 - (show annotations)
Wed Sep 24 07:52:19 2008 UTC (10 years, 11 months ago) by gross
Original Path: trunk/paso/src/Common.h
File MIME type: text/plain
File size: 7424 byte(s)
a robister version of the upwinding scheme
1
2 /* $Id$ */
3
4 /*******************************************************
5 *
6 * Copyright 2003-2007 by ACceSS MNRF
7 * Copyright 2007 by University of Queensland
8 *
9 * http://esscc.uq.edu.au
10 * Primary Business: Queensland, Australia
11 * Licensed under the Open Software License version 3.0
12 * http://www.opensource.org/licenses/osl-3.0.php
13 *
14 *******************************************************/
15
16 #ifndef INC_PASO_COMMON
17 #define INC_PASO_COMMON
18
19 /**************************************************************/
20
21 /* Finley finite element solver: common include file */
22
23 /**************************************************************/
24
25 /* Copyrights by ACcESS Australia, 2003 */
26 /* Version: $Id$ */
27
28 /**************************************************************/
29
30 /* some system values */
31 /* FIXME: This is not satisfactory. */
32 /* _ECC, __INTEL_COMPILER, and other */
33 /* intel compiler pre-defines need to be handled */
34 /* (__ICL, __ICC come to mind) */
35 #if ( defined __INTEL_COMPILER )
36 #include <mathimf.h>
37 #else
38 #include <math.h>
39 #endif
40
41 #if (defined __OPENMP)
42 #include <omp.h>
43 #endif
44
45 #include <float.h>
46 #include <stdio.h>
47 #include <limits.h>
48 #include <stdlib.h>
49 #include <string.h>
50
51 #define LenString_MAX FILENAME_MAX*2
52 #define LenErrorMsg_MAX LenString_MAX
53
54 /* on some arcitectures it could be a good idea to use long rather than int */
55 /* this has not really been tested */
56
57 typedef int dim_t;
58 typedef int index_t;
59 typedef int bool_t;
60 typedef int type_t;
61 typedef int err_t;
62
63 #define INDEX_T_MAX INT_MAX
64 #define INDEX_T_MIN -INT_MAX
65 #define EPSILON DBL_EPSILON
66 #define LARGE_POSITIVE_FLOAT DBL_MAX
67 #define SMALL_NEGATIVE_FLOAT -DBL_MAX
68
69 /**************************************************************/
70
71 /* some useful functions: */
72
73 #define FALSE 0
74 #define TRUE 1
75 #define UNKNOWN -1
76 #define DBLE(_x_) (double)(_x_)
77 #define INDEX1(_X1_) (_X1_)
78 #define INDEX2(_X1_,_X2_,_N1_) ((_X1_)+(_N1_)*(_X2_))
79 #define INDEX3(_X1_,_X2_,_X3_,_N1_,_N2_) ((_X1_)+(_N1_)*INDEX2(_X2_,_X3_,_N2_))
80 #define INDEX4(_X1_,_X2_,_X3_,_X4_,_N1_,_N2_,_N3_) ((_X1_)+(_N1_)*INDEX3(_X2_,_X3_,_X4_,_N2_,_N3_))
81 #define INDEX5(_X1_,_X2_,_X3_,_X4_,_X5_,_N1_,_N2_,_N3_,_N4_) ((_X1_)+(_N1_)*INDEX4(_X2_,_X3_,_X4_,_X5_,_N2_,_N3_,_N4_))
82 #define INDEX6(_X1_,_X2_,_X3_,_X4_,_X5_,_X6_,_N1_,_N2_,_N3_,_N4_,_N5_) ((_X1_)+(_N1_)*INDEX5(_X2_,_X3_,_X4_,_X5_,_X6_,_N2_,_N3_,_N4_,_N5_))
83
84 #define MAX(_arg1_,_arg2_) ((_arg1_)>(_arg2_) ? (_arg1_) : (_arg2_))
85 #define MAX3(_arg1_,_arg2_,_arg3_) MAX(_arg1_,MAX(_arg2_,_arg3_))
86 #define MIN(_arg1_,_arg2_) ((_arg1_)>(_arg2_) ? (_arg2_) : (_arg1_))
87 #define MIN3(_arg1_,_arg2_,_arg3_) MIN(_arg1_,MIN(_arg2_,_arg3_))
88 #define ABS(_arg_) MAX((_arg_),-(_arg_))
89 #define SIGN(_arg_) ((_arg_)>0 ? 1 : ((_arg_)<0 ? -1 : 0 ))
90 #define SWAP(_a0_,_a1_,_type_) { \
91 _type_ s; \
92 s=(_a0_); \
93 _a0_= (_a1_); \
94 _a1_=s; \
95 }
96 /**************************************************************/
97 /* memory allocation: */
98 /* Wise to not use PASO_MALLOC/FREE/REALLOC and */
99 /* PASO_THREAD... directly. These are only for tailoring */
100 /* the main macros that follow */
101 /**************************************************************/
102
103 #if defined(_WIN32) /* Use python for memory management on windows. */
104
105 #include <python.h>
106
107 #define PASO_MALLOC PyMem_Malloc
108 #define PASO_FREE PyMem_Free
109 #define PASO_REALLOC PyMem_Realloc
110
111 #else
112
113 #include <stdlib.h>
114
115 #define PASO_MALLOC malloc
116 #define PASO_FREE free
117 #define PASO_REALLOC realloc
118
119 #endif
120
121
122 /* FIXME: This is not satisfactory. */
123 /* _ECC, __INTEL_COMPILER, and other */
124 /* intel compiler pre-defines need to be handled */
125 /* (__ICL, __ICC come to mind) */
126 /* Also, _WIN32 may take this branch one day... */
127 /* SO KEEP ALL THREAD_MEMALLOC/FREEs CONFINED TO THE PASO LIBRARY. */
128
129 #if defined(__ECC) && defined(_OPENMP) /* ECC version of intel compiler with openmp. */
130 #include <omp.h>
131 #define PASO_THREAD_MALLOC kmp_malloc
132 #define PASO_THREAD_FREE kmp_free
133 #else
134 #define PASO_THREAD_MALLOC PASO_MALLOC
135 #define PASO_THREAD_FREE PASO_FREE
136 #endif
137
138 /******************The main macros ************************************/
139
140 #define MEMALLOC(_LENGTH_,_TYPE_) \
141 (_TYPE_*) PASO_MALLOC(((size_t)(_LENGTH_))*sizeof(_TYPE_))
142
143 /* do {} while(0) - an old trick for bracketing a macro that */
144 /* makes sure a semi-colon does no harm. */
145
146 #define MEMFREE(_PTR_) \
147 do \
148 { \
149 if ((void *)(_PTR_) != NULL ) { PASO_FREE(_PTR_); (_PTR_) = NULL; } \
150 } while(0)
151
152 #define MEMREALLOC(_POINTER_,_LENGTH_,_TYPE_) \
153 do \
154 { \
155 if( (_POINTER_)!=NULL ) \
156 { \
157 _POINTER_ = (_TYPE_*)PASO_REALLOC((void*)(_POINTER_), \
158 ((size_t)(_LENGTH_))*sizeof(_TYPE_) ); \
159 } \
160 else \
161 { \
162 _POINTER_ = (_TYPE_*)PASO_MALLOC( ((size_t)(_LENGTH_))*sizeof(_TYPE_) ); \
163 } \
164 } while(0)
165
166 #define TMPMEMALLOC MEMALLOC
167 #define TMPMEMFREE MEMFREE
168
169 #define THREAD_MEMALLOC(_LENGTH_,_TYPE_) \
170 (_TYPE_*) PASO_THREAD_MALLOC/**/(((size_t)(_LENGTH_))*sizeof(_TYPE_))
171
172 #define THREAD_MEMFREE(_PTR_) \
173 do \
174 { \
175 if ((void *)(_PTR_) != NULL ) { PASO_THREAD_FREE(_PTR_); (_PTR_) = NULL; } \
176 } while(0)
177
178
179 /*
180 This was useful for seeing what memory is being allocated if you get an "Out of memory" error
181 if used again, bracket with do {} while(0)
182 #define TMPMEMALLOC(_LENGTH_,_TYPE_) (printf("TMPMEMALLOC at %s %d #bytes=%d*%d=%d\n", __FILE__, __LINE__, _LENGTH_, sizeof(_TYPE_), ((size_t)(_LENGTH_) * sizeof(_TYPE_))) , (_TYPE_*) malloc(((size_t)(_LENGTH_))*sizeof(_TYPE_)))
183
184 This was useful for seeing where memory is being freed if you get an "glibc detected...free" error
185 if used again, bracket with do {} while(0)
186 #define TMPMEMFREE(_PTR_) if ((void *)(_PTR_) != NULL ) { printf("TMPMEMFREE AAA %s %d\n", __FILE__, __LINE__); free(_PTR_); (_PTR_) = NULL; printf("TMPMEMFREE BBB %s %d\n", __FILE__, __LINE__); }
187 */
188
189 #endif /* #ifndef INC_PASO_COMMON */

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