#include "utils.h"

int IntDivf(float x, float y) {
	if (y==0) return 0;
	if ((x/y-(int) (x/y))>0)
		return (int) (x/y+1);
	else
		return (int) x/y;
}

int IntDiv(int x, int y) {
	if (x%y==0) return x/y;
	else return (x/y+1);
}



void BytetoBits(char *input, char *output, int l) {
	int posbit, poscar;
	char c;
	int i;

	for (i=0;i<l;i++) {

		poscar=i/8;
		posbit=i-8*poscar;

		if (input[i]==1) {
			c=0x01;
			c<<=7-posbit;
			output[poscar]=output[poscar] | c;
		}
		else {
			c=(char) 254;
			c<<=(7-posbit);
			output[poscar]=output[poscar] & c;
		}
	}
}

void BitstoByte(char *input, char *output, int l) {
	int posbit, poscar;
	char c;
	int i;

	for (i=0;i<l;i++) {
		poscar=i/8;
		posbit=i-8*poscar;

		c=0x01;
		c<<=(7-posbit);

		if ((c & input[poscar])==0)
			output[i]=0;
		else
			output[i]=1;
	}
}