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(svn r13552) -Codechange: use TTD_ENDIAN comparations instead of tests if TTD_[BIG/LITTLE]_ENDIAN is defined

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smatz
2008-06-17 19:38:00 +00:00
parent dedb0033b3
commit 9da745b381
10 changed files with 74 additions and 36 deletions
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27
src/endian_check.cpp
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@@ -12,6 +12,21 @@
#include <stdio.h>
#include <string.h>
/** Supported endian types */
enum Endian {
ENDIAN_LITTLE, ///< little endian
ENDIAN_BIG ///< big endian
};
/**
* Shortcut to printf("#define TTD_*_ENDIAN 0/1")
* @param endian endian type to define
*/
static inline void printf_endian(Endian endian)
{
printf("#define TTD_ENDIAN %s\n", endian == ENDIAN_LITTLE ? "TTD_LITTLE_ENDIAN" : "TTD_BIG_ENDIAN");
}
/**
* Main call of the endian_check program
* @param argc argument count
@@ -30,23 +45,23 @@ int main (int argc, char *argv[])
printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n");
if (force_LE == 1) {
printf("#define TTD_LITTLE_ENDIAN\n");
printf_endian(ENDIAN_LITTLE);
} else if (force_BE == 1) {
printf("#define TTD_BIG_ENDIAN\n");
printf_endian(ENDIAN_BIG);
} else if (force_PREPROCESSOR == 1) {
/* Support for universal binaries on OSX
* Universal binaries supports both PPC and x86
* If a compiler for OSX gets this setting, it will always pick the correct endian and no test is needed
*/
printf("#ifdef __BIG_ENDIAN__\n");
printf("#define TTD_BIG_ENDIAN\n");
printf_endian(ENDIAN_BIG);
printf("#else\n");
printf("#define TTD_LITTLE_ENDIAN\n");
printf_endian(ENDIAN_LITTLE);
printf("#endif\n");
} else if (*(short*)endian_test == 1 ) {
printf("#define TTD_LITTLE_ENDIAN\n");
printf_endian(ENDIAN_LITTLE);
} else {
printf("#define TTD_BIG_ENDIAN\n");
printf_endian(ENDIAN_BIG);
}
printf("#endif\n");