having problem with delay_ms and delay_us

void main()
{
int i;
ANSEL;                                    // Configure AN pins as digital I/O
ANSELH;
PORTD;
TRISD;
RD2;
while(1)
{
//Move Anti Clockwise direction
for(i=1;i<=500; i++)
{
PORTD=(1<<RD2); //output_high(PIN_D2);
delay_us(1000); //want servo to move to 0 degrees.
PORTD=(0<<RD2);  //output_low(PIN_D2);
delay_ms(20);

}
//Move Clockwise Direction
for(i=1;i<=500; i++)
{
PORTD=(1<<RD2); //output_high(PIN_D2);
delay_us(2000); //want servo to move to 180 degrees.
PORTD=(0<<RD2);  //output_low(PIN_D2);
delay_ms(20);

}
}
}

#ifndef __DELAY_H

	#define FOSC		80000000LL		// clock-frequecy in Hz with suffix LL (64-bit-long), eg. 32000000LL for 32MHz
	#define FCY      	(FOSC/2)		// MCU is running at FCY MIPS

	#define delay_us(x)	__delay32(((x*FCY)/1000000L))	// delays x us
	#define delay_ms(x)	__delay32(((x*FCY)/1000L))		// delays x ms

	#define __DELAY_H	1
	#include <libpic30.h>

#endif