Rev 261 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 1063 | tullio | 1 | |
| 2 | /* |
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| 3 | * This program is free software; you can redistribute it and/or modify |
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| 4 | * it under the terms of the GNU General Public License as published by |
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| 5 | * the Free Software Foundation; either version 2 of the License, or |
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| 6 | * (at your option) any later version. |
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| 7 | * |
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| 8 | * This program is distributed in the hope that it will be useful, |
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| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 11 | * GNU General Public License for more details. |
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| 12 | * |
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| 13 | * You should have received a copy of the GNU General Public License |
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| 14 | * along with this program; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 16 | * |
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| 17 | */ |
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| 18 | |||
| 261 | giacomo | 19 | #include "endn.h" |
| 20 | |||
| 21 | /****************************************************************************** |
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| 22 | FUNCTION: SwapEndian |
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| 23 | PURPOSE: Swap the byte order of a structure |
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| 24 | EXAMPLE: float F=123.456;; SWAP_FLOAT(F); |
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| 25 | ******************************************************************************/ |
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| 26 | |||
| 27 | void *SwapEndian(void* Addr, const int Nb) { |
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| 28 | static char Swapped[16]; |
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| 29 | switch (Nb) { |
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| 30 | case 2: Swapped[0]=*((char*)Addr+1); |
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| 31 | Swapped[1]=*((char*)Addr ); |
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| 32 | break; |
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| 33 | case 4: Swapped[0]=*((char*)Addr+3); |
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| 34 | Swapped[1]=*((char*)Addr+2); |
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| 35 | Swapped[2]=*((char*)Addr+1); |
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| 36 | Swapped[3]=*((char*)Addr ); |
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| 37 | break; |
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| 38 | case 8: Swapped[0]=*((char*)Addr+7); |
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| 39 | Swapped[1]=*((char*)Addr+6); |
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| 40 | Swapped[2]=*((char*)Addr+5); |
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| 41 | Swapped[3]=*((char*)Addr+4); |
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| 42 | Swapped[4]=*((char*)Addr+3); |
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| 43 | Swapped[5]=*((char*)Addr+2); |
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| 44 | Swapped[6]=*((char*)Addr+1); |
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| 45 | Swapped[7]=*((char*)Addr ); |
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| 46 | break; |
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| 47 | case 16:Swapped[0]=*((char*)Addr+15); |
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| 48 | Swapped[1]=*((char*)Addr+14); |
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| 49 | Swapped[2]=*((char*)Addr+13); |
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| 50 | Swapped[3]=*((char*)Addr+12); |
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| 51 | Swapped[4]=*((char*)Addr+11); |
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| 52 | Swapped[5]=*((char*)Addr+10); |
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| 53 | Swapped[6]=*((char*)Addr+9); |
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| 54 | Swapped[7]=*((char*)Addr+8); |
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| 55 | Swapped[8]=*((char*)Addr+7); |
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| 56 | Swapped[9]=*((char*)Addr+6); |
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| 57 | Swapped[10]=*((char*)Addr+5); |
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| 58 | Swapped[11]=*((char*)Addr+4); |
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| 59 | Swapped[12]=*((char*)Addr+3); |
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| 60 | Swapped[13]=*((char*)Addr+2); |
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| 61 | Swapped[14]=*((char*)Addr+1); |
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| 62 | Swapped[15]=*((char*)Addr ); |
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| 63 | break; |
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| 64 | } |
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| 65 | return (void*)Swapped; |
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| 66 | } |
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| 67 |