| … | |
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| 465 | |
465 | |
| 466 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
466 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
| 467 | ecb_inline unsigned char |
467 | ecb_inline unsigned char |
| 468 | ecb_byteorder_helper (void) |
468 | ecb_byteorder_helper (void) |
| 469 | { |
469 | { |
| 470 | const uint32_t u = 0x11223344; |
470 | /* the union code still generates code under pressure in gcc, */ |
| 471 | return *(unsigned char *)&u; |
471 | /* but less than using pointers, and always seem to */ |
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472 | /* successfully return a constant. */ |
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473 | /* the reason why we have this horrible preprocessor mess */ |
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474 | /* is to avoid it in all cases, at leats on common architectures */ |
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475 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
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476 | return 0x44; |
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477 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
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478 | return 0x44; |
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479 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
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480 | retrurn 0x11; |
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481 | #else |
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482 | union |
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483 | { |
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484 | uint32_t i; |
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485 | uint8_t c; |
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486 | } u = { 0x11223344 }; |
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487 | return u.c; |
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488 | #endif |
| 472 | } |
489 | } |
| 473 | |
490 | |
| 474 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
491 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
| 475 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
492 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
| 476 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
493 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
