SW006013 Microchip Technology, SW006013 Datasheet - Page 102
SW006013
Manufacturer Part Number
SW006013
Description
MPLAB C Compiler For DsPIC DSCs
Manufacturer
Microchip Technology
Series
DsPIC30F/33Fr
Type
MPLAB® C Compilerr
Datasheet
1.SW006014.pdf
(246 pages)
Specifications of SW006013
Supported Families
DsPIC30F, DsPIC33F
Core Architecture
DsPIC
Kit Contents
Software And Docs
Mcu Supported Families
DsPIC30F And DsPIC33F
Tool Function
Compiler
Tool Type
Compiler
Processor Series
dsPIC
Lead Free Status / RoHS Status
na
For Use With/related Products
dSPIC DSCs
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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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.
*/
*/
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