SW006014 Microchip Technology, SW006014 Datasheet - Page 144

• 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 140
difftime
Description:
Include:
Prototype:
Arguments:
Return Value:
Remarks:
Example:
gmtime
Description:
Include:
Prototype:
Argument:
Return Value:
Remarks:
Find the difference between two times.
<time.h>
double difftime(time_t t1, time_t t0);
t1
t0
Returns the number of seconds between t1 and t0.
By default, the 16-bit compiler returns the time as instruction cycles so
difftime returns the number of ticks between t1 and t0.
#include <time.h>
#include <stdio.h> /* for printf
volatile int i;
int main(void)
{
}
Output:
start = 0
stop = 317
Elapsed time = 317
Converts calendar time to time structure expressed as Universal Time
Coordinated (UTC) also known as Greenwich Mean Time (GMT).
<time.h>
struct tm *gmtime(const time_t *tod);
tod
Returns the address of the time structure.
This function breaks down the tod value into the time structure of type
tm. By default, the 16-bit compiler returns the time as instruction
cycles. With this default gmtime and localtime will be equivalent
except gmtime will return tm_isdst (Daylight Savings Time flag) as
zero to indicate that Daylight Savings Time is not in effect.
clock_t start, stop;
double elapsed;
start = clock();
for (i = 0; i < 10; i++)
stop = clock();
printf("start = %ld\n", start);
printf("stop = %ld\n", stop);
elapsed = difftime(stop, start);
printf("Elapsed time = %.0f\n", elapsed);
ending time
beginning time
pointer to stored time
/* for clock, difftime */
© 2008 Microchip Technology Inc.
*/