author | convert-repo |
Mon, 07 Apr 2008 16:21:55 +0000 | |
changeset 10076 | dfd70e42c4ae |
parent 7817 | f24498d934ac |
child 10998 | 04f58fa3dbb0 |
child 11044 | 097ea3e7ec56 |
permissions | -rw-r--r-- |
2186 | 1 |
/* $Id$ */ |
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/** @file endian_check.cpp |
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* This pretty simple file checks if the system is LITTLE_ENDIAN or BIG_ENDIAN |
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* it does that by putting a 1 and a 0 in an array, and read it out as one |
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* number. If it is 1, it is LITTLE_ENDIAN, if it is 256, it is BIG_ENDIAN |
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* |
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* After that it outputs the contents of an include files (endian.h) |
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* that says or TTD_LITTLE_ENDIAN, or TTD_BIG_ENDIAN. Makefile takes |
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* care of the real writing to the file. */ |
7baba06b4b85
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|
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dd017fa3bad8
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#include <stdio.h> |
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#include <string.h> |
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|
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/** |
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* Main call of the endian_check program |
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* @param argc argument count |
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(svn r9568) -Documentation: doxygen and comment changes: Root of src is finally done. Now, time to start clearing as much as possible
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* @param argv arguments themselves |
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* @return exit code |
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*/ |
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int main (int argc, char *argv[]) |
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{ |
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unsigned char endian_test[2] = { 1, 0 }; |
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int force_BE = 0, force_LE = 0, force_PREPROCESSOR = 0; |
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|
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if (argc > 1 && strcmp(argv[1], "BE") == 0) force_BE = 1; |
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if (argc > 1 && strcmp(argv[1], "LE") == 0) force_LE = 1; |
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if (argc > 1 && strcmp(argv[1], "PREPROCESSOR") == 0) force_PREPROCESSOR = 1; |
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|
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printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n"); |
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|
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if (force_LE == 1) { |
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printf("#define TTD_LITTLE_ENDIAN\n"); |
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} else if (force_BE == 1) { |
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printf("#define TTD_BIG_ENDIAN\n"); |
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} else if (force_PREPROCESSOR == 1) { |
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/* Support for universal binaries on OSX |
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* Universal binaries supports both PPC and x86 |
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* If a compiler for OSX gets this setting, it will always pick the correct endian and no test is needed |
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*/ |
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printf("#ifdef __BIG_ENDIAN__\n"); |
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printf("#define TTD_BIG_ENDIAN\n"); |
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printf("#else\n"); |
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printf("#define TTD_LITTLE_ENDIAN\n"); |
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printf("#endif\n"); |
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} else if (*(short*)endian_test == 1 ) { |
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printf("#define TTD_LITTLE_ENDIAN\n"); |
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} else { |
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printf("#define TTD_BIG_ENDIAN\n"); |
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} |
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printf("#endif\n"); |
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dd017fa3bad8
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|
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return 0; |
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} |