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| Rev | Author | Line No. | Line |
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| 261 | giacomo | 1 | #include "endn.h" |
| 2 | |||
| 3 | /****************************************************************************** |
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| 4 | FUNCTION: SwapEndian |
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| 5 | PURPOSE: Swap the byte order of a structure |
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| 6 | EXAMPLE: float F=123.456;; SWAP_FLOAT(F); |
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| 7 | ******************************************************************************/ |
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| 8 | |||
| 9 | void *SwapEndian(void* Addr, const int Nb) { |
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| 10 | static char Swapped[16]; |
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| 11 | switch (Nb) { |
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| 12 | case 2: Swapped[0]=*((char*)Addr+1); |
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| 13 | Swapped[1]=*((char*)Addr ); |
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| 14 | break; |
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| 15 | case 4: Swapped[0]=*((char*)Addr+3); |
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| 16 | Swapped[1]=*((char*)Addr+2); |
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| 17 | Swapped[2]=*((char*)Addr+1); |
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| 18 | Swapped[3]=*((char*)Addr ); |
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| 19 | break; |
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| 20 | case 8: Swapped[0]=*((char*)Addr+7); |
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| 21 | Swapped[1]=*((char*)Addr+6); |
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| 22 | Swapped[2]=*((char*)Addr+5); |
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| 23 | Swapped[3]=*((char*)Addr+4); |
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| 24 | Swapped[4]=*((char*)Addr+3); |
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| 25 | Swapped[5]=*((char*)Addr+2); |
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| 26 | Swapped[6]=*((char*)Addr+1); |
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| 27 | Swapped[7]=*((char*)Addr ); |
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| 28 | break; |
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| 29 | case 16:Swapped[0]=*((char*)Addr+15); |
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| 30 | Swapped[1]=*((char*)Addr+14); |
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| 31 | Swapped[2]=*((char*)Addr+13); |
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| 32 | Swapped[3]=*((char*)Addr+12); |
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| 33 | Swapped[4]=*((char*)Addr+11); |
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| 34 | Swapped[5]=*((char*)Addr+10); |
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| 35 | Swapped[6]=*((char*)Addr+9); |
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| 36 | Swapped[7]=*((char*)Addr+8); |
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| 37 | Swapped[8]=*((char*)Addr+7); |
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| 38 | Swapped[9]=*((char*)Addr+6); |
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| 39 | Swapped[10]=*((char*)Addr+5); |
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| 40 | Swapped[11]=*((char*)Addr+4); |
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| 41 | Swapped[12]=*((char*)Addr+3); |
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| 42 | Swapped[13]=*((char*)Addr+2); |
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| 43 | Swapped[14]=*((char*)Addr+1); |
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| 44 | Swapped[15]=*((char*)Addr ); |
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| 45 | break; |
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| 46 | } |
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| 47 | return (void*)Swapped; |
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| 48 | } |
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| 49 |