116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
#ifndef STDLIB_H
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#define STDLIB_H
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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#include <assert.h>
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#include <ctype.h>
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/*****************************************************************************
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*
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* Numeric parsing
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*
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****************************************************************************
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*/
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static inline int strtoul_base ( const char **pp, int base )
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{
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const char *p = *pp;
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while ( isspace ( *p ) )
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p++;
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if ( base == 0 ) {
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base = 10;
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if ( *p == '0' ) {
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p++;
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base = 8;
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if ( ( *p | 0x20 ) == 'x' ) {
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p++;
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base = 16;
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}
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}
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}
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*pp = p;
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return base;
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}
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static inline unsigned int strtoul_charval ( unsigned int charval )
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{
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if ( charval >= 'a' ) {
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charval = ( charval - 'a' + 10 );
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} else if ( charval >= 'A' ) {
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charval = ( charval - 'A' + 10 );
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} else if ( charval <= '9' ) {
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charval = ( charval - '0' );
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}
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return charval;
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}
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extern unsigned long strtoul ( const char *p, char **endp, int base );
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extern unsigned long long strtoull ( const char *p, char **endp, int base );
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/*****************************************************************************
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*
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* Memory allocation
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*
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****************************************************************************
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*/
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extern void * __malloc malloc ( size_t size );
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extern void * realloc ( void *old_ptr, size_t new_size );
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extern void free ( void *ptr );
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extern void * __malloc zalloc ( size_t len );
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/**
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* Allocate cleared memory
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*
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* @v nmemb Number of members
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* @v size Size of each member
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* @ret ptr Allocated memory
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*
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* Allocate memory as per malloc(), and zero it.
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*
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* This is implemented as a static inline, with the body of the
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* function in zalloc(), since in most cases @c nmemb will be 1 and
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* doing the multiply is just wasteful.
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*/
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static inline void * __malloc calloc ( size_t nmemb, size_t size ) {
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return zalloc ( nmemb * size );
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}
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/*****************************************************************************
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*
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* Random number generation
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*
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****************************************************************************
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*/
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extern long int random ( void );
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extern void srandom ( unsigned int seed );
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static inline int rand ( void ) {
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return random();
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}
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static inline void srand ( unsigned int seed ) {
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srandom ( seed );
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}
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/*****************************************************************************
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*
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* Miscellaneous
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*
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****************************************************************************
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*/
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extern int system ( const char *command );
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extern __asmcall int main ( void );
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#endif /* STDLIB_H */
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