Zilog EZ80F916 - Manual (Page 370)

UM014423-0607 C Standard Library
ZiLOG Developer Studio II
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Returns
A pointer to the start (lowest byte address) of the allocated space. If the space cannot be
allocated, or if
size
is zero, the malloc function returns a null pointer.
Example
char *buf;
buf=(char *) malloc(40*sizeof(char));
if(buf !=NULL)
/*success*/
else
/*fail*/
memchr
Locates the first occurrence of c (converted to an unsigned char ) in the initial n charac-
ters of the object pointed to by s.
Synopsis
#include
void *memchr(void *s, int c, size_t n);
Returns
A pointer to the located character or a null pointer if the character does not occur in the
object.
Example
char *p1;
char str[]="COMPASS";
c='p';
p1=memchr(str,c,sizeof(char));
memcmp
Compares the first n characters of the object pointed to by s2 to the object pointed to by s1.
Synopsis
#include
int memcmp(void *s1, void *s2, size_t n);
Returns
An integer greater than, equal to, or less than zero, according as the object pointed to by s1
is greater than, equal to, or less than the object pointed to by s2.