#include "standard_include.h"

bool cast_string_to_double (string &b, double &h) {
// set h= the number written in b[]; 
// return false if there is an error

	h=0;
	if(b.size()==0)
		return false;
	
	int sign=1;

	 if (b[0]=='-') {
		
		b[0]='0';
		sign=-1;
	 
	 }
	
	int digits_before=0;
	for(uint i=0; i<b.size(); i++)
		if(b[i]!='.')
			digits_before++;
		else
			break;
	
	int j=0;
	
	while (j!=digits_before) {
	
		int number=(int(b[j])-48);
		h+=number*pow(10, digits_before-j-1);
		
		
		if (number<0 || number>9)
			return false;
		
		j++;
	}

	j = digits_before+1;
	
	while (j < (int) b.size()) {
		
		int number=(int(b[j])-48);
		h+=number*pow(10, digits_before-j);
		
		if (number<0 || number>9)
			return false;
		
		j++;
	}

		
	h=sign*h;
	
	
	return true;
	
}


int cast_int(double u) {

	int a=int(u);
	if (u - a > 0.5)
		a++;
	
	return a;
		
}


int cast_string_to_char(string &file_name, char *b) {

	for(uint i=0; i<file_name.size(); i++)
		b[i]=file_name[i];
	b[file_name.size()]='\0';	

	return 0;

}
