src/include/stdlib.h

   1 #ifndef STDLIB_H
   2 #define STDLIB_H
   3
   4 #include <stdint.h>
   5 #include <assert.h>
   6
   7 /*****************************************************************************
   8  *
   9  * Numeric parsing
  10  *
  11  ****************************************************************************
  12  */
  13
  14 extern unsigned long strtoul ( const char *p, char **endp, int base );
  15
  16 /*****************************************************************************
  17  *
  18  * Memory allocation
  19  *
  20  ****************************************************************************
  21  */
  22
  23 extern void * __malloc malloc ( size_t size );
  24 extern void * realloc ( void *old_ptr, size_t new_size );
  25 extern void free ( void *ptr );
  26 extern void * __malloc zalloc ( size_t len );
  27
  28 /**
  29  * Allocate cleared memory
  30  *
  31  * @v nmemb             Number of members
  32  * @v size              Size of each member
  33  * @ret ptr             Allocated memory
  34  *
  35  * Allocate memory as per malloc(), and zero it.
  36  *
  37  * This is implemented as a static inline, with the body of the
  38  * function in zalloc(), since in most cases @c nmemb will be 1 and
  39  * doing the multiply is just wasteful.
  40  */
  41 static inline void * __malloc calloc ( size_t nmemb, size_t size ) {
  42         return zalloc ( nmemb * size );
  43 }
  44
  45 /*****************************************************************************
  46  *
  47  * Random number generation
  48  *
  49  ****************************************************************************
  50  */
  51
  52 extern long int random ( void );
  53 extern void srandom ( unsigned int seed );
  54
  55 static inline int rand ( void ) {
  56         return random();
  57 }
  58
  59 static inline void srand ( unsigned int seed ) {
  60         srandom ( seed );
  61 }
  62
  63 /*****************************************************************************
  64  *
  65  * Miscellaneous
  66  *
  67  ****************************************************************************
  68  */
  69
  70 extern int system ( const char *command );
  71 extern __asmcall int main ( void );
  72
  73 #endif /* STDLIB_H */