Calloc, Ceil, ceilf, Calloc ceil, ceilf – Zilog ZUSBOPTS User Manual
Page 441: Synopsis, Returns, Example
UM017105-0511
Standard Functions
Zilog Developer Studio II – ZNEO™
User Manual
413
calloc
Allocates space for an array of nmemb objects, each of whose size is
size
. The space is
initialized to all bits zero.
Synopsis
#include
void *calloc(size_t nmemb, size_t size);
Returns
A pointer to the start (lowest byte address) of the allocated space. If the space cannot be
allocated, or if nmemb or
size
is zero, the
calloc
function returns a null pointer.
Example
char *buf;
buf = (char*)calloc(40, sizeof(char));
if (buf != NULL)
/*success*/
else
/*fail*/
ceil, ceilf
Computes the smallest integer not less than x.
Synopsis
#include
double ceil(double x);
float ceilf(float x);
Returns
The smallest integer not less than x, expressed as a
double
for
ceil
and expressed as a
float
for
ceilf
.
Example
double y=1.45;
double x;
x=ceil(y);