cousteaulecommandant

// Colemak symbols for xkb on X.Org Server 7.x
// 2006-01-01 Shai Coleman, http://colemak.com/ . Public domain.
// 2017-12-09 Modified to support Level5 switch

partial default alphanumeric_keys modifier_keys
xkb_symbols "basic" {
    name[Group1]= "Colemak";

    // Alphanumeric section
    key.type[Group1] = "EIGHT_LEVEL"; // allows using Level5 switch

cousteaulecommandant

#define OPTION 1  // 1, 2, 3, 4, 5
typedef long res_t;  // long, float

#if   OPTION == 1
  // use Arduino.h's `round`
#elif OPTION == 2
  // use template function returning long
  template<typename T> long Round(T x) { return x>=0 ? x+0.5 : x-0.5; }
  #undef round
  #define round(x) Round(x)

cousteaulecommandant

/*
 * Struct to handle bits in registers
 */
typedef struct {
	uint8_t b0:1;
	uint8_t b1:1;
	uint8_t b2:1;
	uint8_t b3:1;
	uint8_t b4:1;
	uint8_t b5:1;

cousteaulecommandant

struct MyPrintable : Printable {
  const char *p;
  MyPrintable(const char *p) : p(p) {}
  size_t printTo(Print &P) const {int i; for (i=0; p[i]; i++) P.write(p[i]); return i;}
};

void setup() {
  #define FSH F("Flash string")
  String S("String");
  char arr[] = "char array";