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1 | // Copyright (c) 1998-1999 Matra Datavision |
2 | // Copyright (c) 1999-2012 OPEN CASCADE SAS |
3 | // |
4 | // The content of this file is subject to the Open CASCADE Technology Public |
5 | // License Version 6.5 (the "License"). You may not use the content of this file |
6 | // except in compliance with the License. Please obtain a copy of the License |
7 | // at http://www.opencascade.org and read it completely before using this file. |
8 | // |
9 | // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its |
10 | // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. |
11 | // |
12 | // The Original Code and all software distributed under the License is |
13 | // distributed on an "AS IS" basis, without warranty of any kind, and the |
14 | // Initial Developer hereby disclaims all such warranties, including without |
15 | // limitation, any warranties of merchantability, fitness for a particular |
16 | // purpose or non-infringement. Please see the License for the specific terms |
17 | // and conditions governing the rights and limitations under the License. |
18 | |
7fd59977 |
19 | |
20 | #include <OSD.ixx> |
21 | |
22 | #include <stdio.h> |
23 | #include <math.h> |
24 | #if HAVE_IEEEFP_H |
25 | # include <ieeefp.h> |
26 | #endif |
27 | #if !defined(HAVE_FINITE) && defined(isfinite) |
28 | # define finite isfinite |
29 | #endif |
30 | |
31 | static Standard_Integer DecimalPoint = 0 ; |
32 | |
33 | static void GetDecimalPoint() { |
34 | float F1 = (float ) 1.1 ; |
35 | char str[5] ; |
36 | |
37 | sprintf(str,"%.1f",F1) ; |
38 | // printf("%s\n",str) ; |
39 | DecimalPoint = str[1] ; |
40 | } |
41 | |
42 | // Convert Real to CString in format e with 16 significant digits. |
43 | // The decimal point character is always a period. |
44 | // The conversion is independant from current locale database |
45 | |
46 | Standard_Boolean OSD::RealToCString(const Standard_Real aReal, |
47 | Standard_PCharacter& aString) |
48 | { |
49 | char *p, *q ; |
50 | |
51 | // Get the local decimal point character |
52 | |
53 | if (!DecimalPoint) |
54 | GetDecimalPoint() ; |
55 | |
56 | // Substitute it |
57 | |
58 | // if (sprintf(aString,"%.15le",aReal) <= 0) |
59 | if (sprintf(aString,"%.17e",aReal) <= 0) //BUC60808 |
60 | return Standard_False ; |
61 | |
62 | if ((p = strchr(aString,DecimalPoint))) |
63 | *p = '.' ; |
64 | |
65 | // Suppress "e+00" and unsignificant 0's |
66 | |
67 | if ((p = strchr(aString,'e'))) { |
68 | if (!strcmp(p,"e+00")) |
69 | *p = 0 ; |
70 | for (q = p-1 ; *q == '0' ; q--) ; |
71 | if (q != p-1) { |
72 | if (*q != '.') q++ ; |
73 | while (*p) |
74 | *q++ = *p++ ; |
75 | *q = 0 ; |
76 | } |
77 | } |
78 | return Standard_True ; |
79 | } |
80 | |
81 | // Make the RealToCString reciprocal conversion. |
82 | |
83 | Standard_Boolean OSD::CStringToReal(const Standard_CString aString, |
84 | Standard_Real& aReal) |
85 | { |
86 | const char *p; |
87 | char *endptr ; |
88 | |
89 | |
90 | // Get the local decimal point character |
91 | |
92 | if (!DecimalPoint) |
93 | GetDecimalPoint() ; |
94 | |
95 | const char *str = aString; |
96 | char buff[1024]; |
97 | //if((p = strchr(aString,'.'))) |
98 | if(DecimalPoint != '.' && (p = strchr(aString,'.'))&& ((p-aString) < 1000) ) |
99 | { |
100 | strncpy(buff, aString, 1000); |
101 | buff[p-aString] = DecimalPoint ; |
102 | str = buff; |
103 | } |
104 | aReal = strtod(str,&endptr) ; |
105 | if (*endptr) |
106 | return Standard_False ; |
107 | return Standard_True; |
108 | } |
109 | |
110 | //======================================================================= |
111 | //function : OSDSecSleep |
112 | //purpose : Cause the process to sleep during a amount of seconds |
113 | //======================================================================= |
114 | |
115 | #ifdef WNT |
116 | # include <Windows.h> |
117 | #if !defined(__CYGWIN32__) && !defined(__MINGW32__) |
118 | # include <Mapiwin.h> |
119 | #endif |
120 | # define _DEXPLEN 11 |
121 | # define _IEEE 1 |
122 | # define DMAXEXP ((1 << _DEXPLEN - 1) - 1 + _IEEE) |
123 | # define finite _finite |
124 | # define SLEEP(NSEC) Sleep(1000*(NSEC)) |
125 | #else |
126 | # define SLEEP(NSEC) sleep(NSEC) |
127 | #endif |
128 | |
129 | #ifdef HAVE_VALUES_H |
130 | //# include <values.h> |
131 | #endif |
132 | |
133 | #ifdef HAVE_UNISTD_H |
134 | # include <unistd.h> |
135 | #endif |
136 | |
137 | void OSD::SecSleep(const Standard_Integer aDelay) |
138 | { |
139 | SLEEP(aDelay); |
140 | } |
141 | |
142 | //======================================================================= |
143 | //function : MilliSecSleep |
144 | //purpose : Cause the process to sleep during a amount of milliseconds |
145 | //======================================================================= |
146 | |
147 | #ifdef WNT |
148 | |
149 | void OSD::MilliSecSleep(const Standard_Integer aDelay) |
150 | { |
151 | Sleep(aDelay) ; |
152 | } |
153 | |
154 | #else |
155 | |
156 | #ifdef HAVE_SYS_TIME_H |
157 | # include <sys/time.h> |
158 | #endif |
159 | |
160 | void OSD::MilliSecSleep(const Standard_Integer aDelay) |
161 | { |
162 | int fdn ; |
163 | struct timeval timeout ; |
164 | |
165 | timeout.tv_sec = aDelay / 1000 ; |
166 | timeout.tv_usec = (aDelay % 1000) * 1000 ; |
167 | |
168 | fdn = select(0,NULL,NULL,NULL,&timeout) ; |
169 | } |
170 | |
171 | #endif |
172 | |
173 | //======================================================================= |
174 | //function : IsDivisible |
175 | //purpose : |
176 | //======================================================================= |
177 | |
178 | Standard_Boolean OSD::IsDivisible(const Standard_Real theDividend,const Standard_Real theDivisor) |
179 | { |
180 | if ( theDivisor == 0. || ! finite(theDividend) ) return Standard_False; |
181 | // |
182 | // you may divide by infinity |
183 | // |
184 | if (! finite(theDivisor)) return Standard_True; |
185 | #ifdef DEB |
186 | // Standard_Integer aExp1, aExp2; |
187 | // Standard_Real aMant1 = frexp(theDividend, &aExp1); |
188 | // Standard_Real aMant2 = frexp(theDivisor, &aExp2); |
189 | #endif |
190 | // Code de :KL:dev:ref : |
191 | // return ((aExp1-aExp2 < DMAXEXP) || // exponent of the result |
192 | // (aExp1-aExp2 == DMAXEXP && aMant1 < aMant2)) ; |
193 | |
194 | // Code de :KAS:C30 : |
195 | return Standard_True; |
196 | |
197 | |
198 | // this is unacceptable return for Linux because of (temporary?) undefined aExp1 and aExp2. |
199 | // Testing both over and underflow should be (:KL:dev ) : |
200 | |
201 | // return ((aExp1-aExp2 < DMAXEXP) && (aExp1-aExp2 > DMINEXP) || |
202 | // (aExp1-aExp2 == DMAXEXP && aMant1 < aMant2) || |
203 | // (aExp1-aExp2 == DMINEXP && aMant1 > aMant2)) ; |
204 | } |
205 | |
206 | //======================================================================= |
207 | //function : GetExponent |
208 | //purpose : |
209 | //======================================================================= |
210 | |
211 | //Standard_Integer OSD::GetExponent(const Standard_Real aReal) |
212 | Standard_Integer OSD::GetExponent(const Standard_Real ) |
213 | { |
214 | // Code de :KAS:C30 : |
215 | |
216 | cout << "Function OSD::GetExponent() not yet implemented." << endl; |
217 | return 0 ; |
218 | |
219 | // Code de :KL:dev:ref : |
220 | |
221 | // Standard_Integer Exp ; |
222 | |
223 | //// Standard_Real Mant = frexp(aReal, &Exp) ; |
224 | // frexp(aReal, &Exp) ; |
225 | // return Exp ; |
226 | } |
227 | |
228 | //======================================================================= |
229 | //function : GetMantissa |
230 | //purpose : |
231 | //======================================================================= |
232 | |
233 | //Standard_Real OSD::GetMantissa(const Standard_Real aReal) |
234 | Standard_Real OSD::GetMantissa(const Standard_Real ) |
235 | { |
236 | // Code de :KAS:C30 : |
237 | cout << "Function OSD::GetMantissa() not yet implemented." << endl; |
238 | return 0 ; |
239 | |
240 | // Code de :KL:dev:ref : |
241 | |
242 | // Standard_Integer Exp ; |
243 | // return frexp(aReal, &Exp) ; |
244 | } |
245 | |
246 | //======================================================================= |
247 | // Code de :KAS:C30 : |
248 | //======================================================================= |
249 | Standard_Integer OSD::AvailableMemory() |
250 | { |
251 | cout << "Function OSD::AvailableMemory() not yet implemented." << endl; |
252 | return 0 ; |
253 | } |
254 | |
255 | // Code de :KL:dev:ref ??????????????? : |
256 | #if 0 |
257 | //======================================================================= |
258 | //function : AvailableMemory |
259 | //purpose : |
260 | //======================================================================= |
261 | #include <stdlib.h> |
262 | #include <stdio.h> |
263 | #include <malloc.h> |
264 | |
265 | # if defined(SUN) || defined(__sun) || defined(SOLARIS) |
266 | # define SIZE_MAX 0x7fffffff |
267 | # elif defined(__osf__) || defined(DECOSF1) |
268 | # define SIZE_MAX 0x10000000000 |
269 | # elif defined(WNT) |
270 | # define SIZE_MAX 0x7ffdefff |
271 | # else |
272 | # define SIZE_MAX 0xffffffff |
273 | # endif |
274 | |
275 | Standard_Integer OSD::AvailableMemory() |
276 | { |
277 | size_t min = 1024 ; |
278 | size_t max = SIZE_MAX ; |
279 | size_t middle = SIZE_MAX ; |
280 | void * addr ; |
281 | int nballoc = 0 ; |
282 | int nbfree = 0 ; |
283 | |
284 | while (min + 1024 < max) { |
285 | if ((addr = malloc (middle))== (void *)-1) { |
286 | perror("OSD::AvailableMemory()_malloc error :") ; |
287 | return 0 ; |
288 | } |
289 | nballoc++ ; |
290 | if (addr == 0) |
291 | max = middle ; |
292 | else { |
293 | free(addr) ; |
294 | nbfree++ ; |
295 | min = middle ; |
296 | } |
297 | middle = min + ((max - min ) >> 6) * 63 ; |
298 | } |
299 | return min >> 10 ; |
300 | } |
301 | |
302 | #endif |