#include <stdint.h>
#include <stdlib.h>
#include <string.h>

extern uint8_t uadd2(uint8_t a, uint8_t b) {
  return a+b;
}

extern uint8_t uadd3(uint8_t a, uint8_t b, uint8_t c) {
  return a+b+c;
}

extern uint8_t uadd4(uint8_t a, uint8_t b, uint8_t c, uint8_t d) {
  return a+b+c+d;
}

extern int8_t iadd2(int8_t a, int8_t b) {
  return a+b;
}

extern int8_t iadd3(int8_t a, int8_t b, int8_t c) {
  return a+b+c;
}

extern int8_t iadd4(int8_t a, int8_t b, int8_t c, int8_t d) {
  return a+b+c+d;
}

extern char* bytes(size_t i) {
  char *out = malloc(i);
  for (int j = 0; j < i; j++) {
    out[j] = j%256;
  }
  return out;
}

extern void write(char *out, size_t i) {
  for (int j = 0; j < i; j++) {
    out[j] = j%256;
  }
}

extern char* uc(char *lc) {
  size_t len = strlen(lc);
  char *out = malloc(len);
  for (int i = 0; i < len; i++) {
    unsigned char c = lc[i];
    out[i] = c >= 97 && c <= 122 ? c - 32 : c;
  }
  return out;
}