SW006014 Microchip Technology, SW006014 Datasheet - Page 102

• Manufacturer Part Number: SW006014
• Description: C COMPILER MPLAB FOR PIC24 MCU
• Manufacturer: Microchip Technology
• Type: MPLAB® C Compilerr
• Series: PIC24r

Specifications of SW006014

• Supported Families: PIC24
• Core Architecture: PIC
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC24
• Tool Function: Compiler
• Tool Type: Compiler
• Processor Series: PIC24
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC24
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

DS51456E-page 98
calloc
Description:
Include:
Prototype:
Arguments:
Return Value:
Remarks:
Example:
div
Description:
Include:
Prototype:
Arguments:
Return Value:
Remarks:
Allocates an array in memory and initializes the elements to 0.
<stdlib.h>
void *calloc(size_t nelem, size_t size);
nelem
size
Returns a pointer to the allocated space if successful; otherwise,
returns a null pointer.
Memory returned by calloc is aligned correctly for any size data ele-
ment and is initialized to zero.
/* This program allocates memory for the
/* array 'i' of long integers and initializes */
/* them to zero.
#include <stdio.h>
#include <stdlib.h> /* for calloc, free */
int main(void)
{
}
Output:
i[0] = 0
i[1] = 0
i[2] = 0
i[3] = 0
i[4] = 0
Calculates the quotient and remainder of two numbers
<stdlib.h>
div_t div(int numer, int denom);
numer
denom
Returns the quotient and the remainder.
The returned quotient will have the same sign as the numerator divided
by the denominator. The sign for the remainder will be such that the
quotient times the denominator plus the remainder will equal the
numerator (quot * denom + rem = numer). Division by zero will invoke
the math exception error, which by default, will cause a reset. Write a
math error handler to do something else.
int x;
long *i;
i = (long *)calloc(5, sizeof(long));
if (i != NULL)
{
}
else
for (x = 0; x < 5; x++)
free(i);
printf("Cannot allocate memory\n");
printf("i[%d] = %ld\n", x, i[x]);
number of elements
length of each element
numerator
denominator
/* for printf, NULL */
© 2008 Microchip Technology Inc.
*/
*/