author | tron |
Fri, 29 Jul 2005 18:22:04 +0000 | |
changeset 2230 | e461b07aead7 |
parent 2186 | db48cf29b983 |
child 2713 | 9c42385e4f41 |
permissions | -rw-r--r-- |
2186 | 1 |
/* $Id$ */ |
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#include <stdio.h> |
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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. |
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int main (int argc, char *argv[]) { |
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unsigned char EndianTest[2] = { 1, 0 }; |
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int force_BE = 0, force_LE = 0; |
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if (argc > 1 && strcmp(argv[1], "BE") == 0) |
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force_BE = 1; |
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if (argc > 1 && strcmp(argv[1], "LE") == 0) |
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force_LE = 1; |
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printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n"); |
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if ( (*(short *) EndianTest == 1 && force_BE != 1) || force_LE == 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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printf("#endif\n"); |
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return 0; |
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} |