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

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Revision 1804 - (hide annotations)
Wed Sep 24 07:52:19 2008 UTC (11 years, 1 month 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 ksteube 1312
2 jgs 150 /* $Id$ */
3    
4 ksteube 1312 /*******************************************************
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 dhawcroft 631
16 jgs 150 #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 phornby 1628 /* 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 woo409 779 #if ( defined __INTEL_COMPILER )
36 woo409 757 #include <mathimf.h>
37     #else
38     #include <math.h>
39     #endif
40 jgs 150
41 gross 1565 #if (defined __OPENMP)
42     #include <omp.h>
43     #endif
44    
45 jgs 150 #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 gross 1716 #define INDEX_T_MIN -INT_MAX
65 jgs 150 #define EPSILON DBL_EPSILON
66 gross 1370 #define LARGE_POSITIVE_FLOAT DBL_MAX
67 gross 1804 #define SMALL_NEGATIVE_FLOAT -DBL_MAX
68 jgs 150
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 ksteube 1312 #define MAX3(_arg1_,_arg2_,_arg3_) MAX(_arg1_,MAX(_arg2_,_arg3_))
86 jgs 150 #define MIN(_arg1_,_arg2_) ((_arg1_)>(_arg2_) ? (_arg2_) : (_arg1_))
87 ksteube 1312 #define MIN3(_arg1_,_arg2_,_arg3_) MIN(_arg1_,MIN(_arg2_,_arg3_))
88 jgs 150 #define ABS(_arg_) MAX((_arg_),-(_arg_))
89 gross 1361 #define SIGN(_arg_) ((_arg_)>0 ? 1 : ((_arg_)<0 ? -1 : 0 ))
90 gross 1562 #define SWAP(_a0_,_a1_,_type_) { \
91     _type_ s; \
92     s=(_a0_); \
93     _a0_= (_a1_); \
94     _a1_=s; \
95     }
96 jgs 150 /**************************************************************/
97     /* memory allocation: */
98 phornby 1628 /* 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 jgs 150
103 phornby 1628 #if defined(_WIN32) /* Use python for memory management on windows. */
104 ksteube 1312
105 phornby 1628 #include <python.h>
106 ksteube 1312
107 phornby 1628 #define PASO_MALLOC PyMem_Malloc
108     #define PASO_FREE PyMem_Free
109     #define PASO_REALLOC PyMem_Realloc
110 bcumming 730
111 jgs 150 #else
112 phornby 1628
113 ksteube 1662 #include <stdlib.h>
114 phornby 1628
115     #define PASO_MALLOC malloc
116     #define PASO_FREE free
117     #define PASO_REALLOC realloc
118    
119 jgs 150 #endif
120    
121 gross 1407
122 phornby 1628 /* 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 jgs 150 #endif /* #ifndef INC_PASO_COMMON */

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