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|  | 
| #define | MAX(a,  b) | 
|  | A macro that returns the maximum of a and b. 
 | 
|  | 
| typedef unsigned int | UINT32 | 
|  | A type definition for a . 
 | 
|  | 
| int | open (const char *, int) | 
|  | Opens a file descriptor. 
 | 
| int | close (int) | 
|  | Closes the file descriptor fd. 
 | 
| size_t | write (int, const char *, size_t) | 
|  | Writes count bytes from buf to the filedescriptor fd. 
 | 
| int | read (int, char *, size_t) | 
|  | Read bytes from a file descriptor. 
 | 
|  | 
| int | errno | 
|  | Contains the last error code. 
 | 
A Documented file. 
Details. 
◆ MAX
Value:
A macro that returns the maximum of a and b. 
Details. 
 
 
◆ UINT32
A type definition for a . 
Details. 
 
 
◆ close()
Closes the file descriptor fd. 
- Parameters
- 
  
    | fd | The descriptor to close. |  
 
 
 
◆ open()
      
        
          | int open | ( | const char * | pathname, | 
        
          |  |  | int | flags ) | 
      
 
Opens a file descriptor. 
- Parameters
- 
  
    | pathname | The name of the descriptor. |  | flags | Opening flags. |  
 
 
 
◆ read()
      
        
          | int read | ( | int | fd, | 
        
          |  |  | char * | buf, | 
        
          |  |  | size_t | count ) | 
      
 
Read bytes from a file descriptor. 
- Parameters
- 
  
    | fd | The descriptor to read from. |  | buf | The buffer to read into. |  | count | The number of bytes to read. |  
 
 
 
◆ write()
      
        
          | size_t write | ( | int | fd, | 
        
          |  |  | const char * | buf, | 
        
          |  |  | size_t | count ) | 
      
 
Writes count bytes from buf to the filedescriptor fd. 
- Parameters
- 
  
    | fd | The descriptor to write to. |  | buf | The data buffer to write. |  | count | The number of bytes to write. |  
 
 
 
◆ errno
Contains the last error code. 
- Warning
- Not thread safe!