#include "utils.h"

void memcpy(u8 *dst, u8 *src, u32 size){
  for(u32 i=0;i<size;i++){
	((u8*)(dst))[i]=((u8*)(src))[i];
  }
}

void memset(u8 *start, u8 value, u32 size){
  for(u32 i=0;i<size;i++){
	((u8*)(start))[i]=value;
  }
}

int modulo(int dividend, int divisor){
  while((dividend-divisor)>0){dividend-=divisor;}
  return dividend;
}

int strlen(char * cp)
{
  int len=0;
  while( cp[len++]) ;
  return len - 1 ; //because it counted the zero which we don't want.
}

int wordlen(char *s)
{
  int len=0;
  while( *s!='\n' && *s!='\0' && *s!=' '){ s++; }
  return len - 1 ; //because it counted the zero which we don't want.
}

u8 strcmp(char *str1, char*str2){
  while( *str1!='\0' && *str2!='\0'){
	if(*str1!=*str2)
	  return 1;
	str1++;
	str2++;
  }
  return *str1 == *str2; // Ensure both final char are \0
}

u8 strncmp(char *str1, char *str2, int n){
  for(int i=0;i<n;i++){
	if(str1[i] == '\0' || str2[i] == '\0')
	  break;
	if(str1[i] != str2[i])
	  return 1;
  }

  return *str1 != *str2;
}