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1 | #include |
1 | #include |
2 | int fseek(FILE* file,long offset,int origin) |
2 | int fseek(FILE* file,long offset,int origin) |
3 | { |
3 | { |
4 | fpos_t pos; |
4 | fpos_t pos; |
- | 5 | if(!file) |
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- | 6 | { |
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- | 7 | errno = E_INVALIDPTR; |
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- | 8 | return errno; |
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- | 9 | } |
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- | 10 | ||
5 | if (origin==SEEK_CUR) |
11 | if (origin==SEEK_CUR) |
6 | offset+=file->filepos; |
12 | offset+=file->filepos; |
7 | else if (origin==SEEK_END) |
13 | else if (origin==SEEK_END) |
8 | offset+=file->filesize; |
14 | offset+=file->filesize; |
9 | else if (origin!=SEEK_SET) |
15 | else if (origin!=SEEK_SET) |