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Member "eas3pkg/eas3pkg/eas3iomod/conv.c" of archive eas3pkg_v1.6.3.tar.gz:
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1 /*-------------------------------------------------------------------------------------------------------*/
2 /* EAS3 License */
3 /* */
4 /* Copyright (c) 2006 Institut fuer Aerodynamik und Gasdynamik, Universitaet Stuttgart */
5 /* */
6 /* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and */
7 /* associated documentation files (the "Software"), to deal in the Software without restriction, */
8 /* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, */
9 /* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, */
10 /* subject to the following conditions: */
11 /* */
12 /* The above copyright notice and this permission notice shall be included in all copies or substantial */
13 /* portions of the Software. */
14 /* */
15 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT */
16 /* LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
17 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
18 /* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION */
19 /* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
20 /*-------------------------------------------------------------------------------------------------------*/
21 /* EAS3 eas3iomod
22
23 conv.c
24
25 Byteweise Konvertierungsroutinen zwischen
26 BIG ENDIAN (BE) auf NEC SX-4/SX5-5,Cray T3E,SGI, Hitachi SR8K und
27 LITTLE ENDIAN (LE) auf Intel IA-64/IA-32 basierten Systemen
28
29 Kai Augustin (augustin@iag.uni-stuttgart.de)
30 Juni 2001 */
31
32
33 #if defined(_LITTLEENDIAN)
34
35 #include <stdlib.h>
36 #include "eas3ioc.h"
37 #include "conv.h"
38
39
40 /* 32-bit Konvertierung */
41 INTRET conv32(size_t numelem, U_CHAR *in_arr, U_CHAR *out_arr)
42 {
43 /* 4 Byte types */
44 register U_INT32 l4 ;
45 U_INT32 *inarray4, *outarray4 ;
46 /* 4 Byte helpers for byteorder */
47 register U_INT32 b0,b1,b2,b3 ;
48
49 LONGLONGRET i,ilen ;
50
51 #ifdef DEBUG_C_IO
52 printf("Calling conv32...\n") ;
53 #endif
54
55 inarray4 = (U_INT32*)in_arr ;
56 outarray4 = (U_INT32*)out_arr ;
57
58 ilen=(LONGLONGRET)numelem ;
59 for (i=0;i<ilen;i++)
60 {
61 l4 = inarray4[i] ;
62 #ifdef DEBUG_C_IO
63 printf(" Vor Conversion: %8.8X\n ",l4) ;
64 #endif
65 b0 = (l4 & 0x000000ff) << 24 ;
66 b1 = (l4 & 0x0000ff00) << 8 ;
67 b2 = (l4 & 0x00ff0000) >> 8 ;
68 b3 = (l4 & 0xff000000) >> 24 ;
69 l4 = 0 ;
70 l4 = b0|b1|b2|b3 ;
71 #ifdef DEBUG_C_IO
72 printf(" Nach Conversion: %8.8x\n",l4) ;
73 #endif
74 outarray4[i] = l4 ;
75 }
76 return(0) ;
77 }
78
79 /* 64-bit Konvertierung */
80 INTRET conv64(size_t numelem, U_CHAR *in_arr, U_CHAR *out_arr)
81 {
82
83 /* 8 Byte types */
84 register U_INT64 l8 ;
85 U_INT64 *inarray8, *outarray8 ;
86 /* 4 Byte helpers for byteorder */
87 register U_INT64 b0,b1,b2,b3,b4,b5,b6,b7 ;
88
89 LONGLONGRET i,ilen ;
90
91 #ifdef DEBUG_C_IO
92 printf("Calling conv64...\n") ;
93 #endif
94
95 inarray8 = (U_INT64*)in_arr ;
96 outarray8 = (U_INT64*)out_arr ;
97
98 ilen=(LONGLONGRET)numelem ;
99 for (i=0;i<ilen;i++)
100 {
101 l8=inarray8[i] ;
102 #ifdef DEBUG_C_IO
103 printf(" Vor Conversion: %16.16llX\n ",l8) ;
104 #endif
105 b0 = (l8 & 0x00000000000000ff) << 56 ;
106 b1 = (l8 & 0x000000000000ff00) << 40 ;
107 b2 = (l8 & 0x0000000000ff0000) << 24 ;
108 b3 = (l8 & 0x00000000ff000000) << 8 ;
109 b4 = (l8 & 0x000000ff00000000) >> 8 ;
110 b5 = (l8 & 0x0000ff0000000000) >> 24 ;
111 b6 = (l8 & 0x00ff000000000000) >> 40 ;
112 b7 = (l8 & 0xff00000000000000) >> 56 ;
113 l8=0 ;
114 l8 = b0|b1|b2|b3|b4|b5|b6|b7 ;
115 #ifdef DEBUG_C_IO
116 printf(" Nach Conversion: %16.16llX\n ",l8) ;
117 #endif
118 outarray8[i] = l8 ;
119 }
120 return(0) ;
121 }
122
123 #endif