Zilog Z8F0130 - Manual (Page 464)

Appendix B. C Standard Library UM013037-1212
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User Manual
space has been deallocated by a call to free or realloc , the behavior is undefined. If
freed space is referenced, the behavior is undefined.
Synopsis
#include

void free(void *ptr);
Example
char *buf;

buf=(char*) calloc(40, sizeof(char));

free(buf);
frexp
Breaks a floating-point number into a normalized fraction and an integral power of 2. It
stores the integer in the
int object pointed to by exp .
Synopsis
#include *

double frexp(double value, int *exp);
Returns
The value x, such that x is a double with magnitude in the interval [1/2, 1] or zero, and
value equals x times 2 raised to the power *exp. If value is zero, both parts of the result are
zero.
Example
double y, x=16.4;

int n;

y=frexp(x,&n);
getchar
Waits for the next character to appear at the serial port and return its value.
Synopsis
#include

int getchar(void);