endian_check.cpp
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00002
00012 #include <stdio.h>
00013 #include <string.h>
00014
00021 int main (int argc, char *argv[])
00022 {
00023 unsigned char endian_test[2] = { 1, 0 };
00024 int force_BE = 0, force_LE = 0, force_PREPROCESSOR = 0;
00025
00026 if (argc > 1 && strcmp(argv[1], "BE") == 0) force_BE = 1;
00027 if (argc > 1 && strcmp(argv[1], "LE") == 0) force_LE = 1;
00028 if (argc > 1 && strcmp(argv[1], "PREPROCESSOR") == 0) force_PREPROCESSOR = 1;
00029
00030 printf("#ifndef ENDIAN_H\n#define ENDIAN_H\n");
00031
00032 if (force_LE == 1) {
00033 printf("#define TTD_LITTLE_ENDIAN\n");
00034 } else if (force_BE == 1) {
00035 printf("#define TTD_BIG_ENDIAN\n");
00036 } else if (force_PREPROCESSOR == 1) {
00037
00038
00039
00040
00041 printf("#ifdef __BIG_ENDIAN__\n");
00042 printf("#define TTD_BIG_ENDIAN\n");
00043 printf("#else\n");
00044 printf("#define TTD_LITTLE_ENDIAN\n");
00045 printf("#endif\n");
00046 } else if (*(short*)endian_test == 1 ) {
00047 printf("#define TTD_LITTLE_ENDIAN\n");
00048 } else {
00049 printf("#define TTD_BIG_ENDIAN\n");
00050 }
00051 printf("#endif\n");
00052
00053 return 0;
00054 }