day2: part1

named inline literals

Fortune for day2's current commit: Future small blessing − 末小吉

day2/include/result.h

@@ -9,10 +9,12 @@ extern "C" {
 
 typedef int64_t result_t;
 
+#define SUM_FIELDS 3
+
 struct psum {
 	union {
 		struct { result_t forward, up, down; };
-		result_t _fields[3];
+		result_t _fields[SUM_FIELDS];
 	};
 };
 

day2/src/p1.c

@@ -32,26 +32,17 @@ static const unsigned char DIGITS[255] = {
 	['0' ... '9'] = 1,
 };
 
-inline static void _fresolv(result_t f[restrict 3], off_t field, result_t v)
+inline static void _fresolv(result_t f[restrict SUM_FIELDS], off_t field, result_t v)
 {
-	f[field & 3] += v;
+	f[field & SUM_FIELDS] += v;
 }
 
-inline static void fresolv(result_t f[restrict 3], const struct proc* restrict p, result_t v)
+inline static void fresolv(result_t f[restrict SUM_FIELDS], const struct proc* restrict p, result_t v)
 {
 	_fresolv(f, p->field, v);
 	//f[p->field] += v;
 }
 
-inline static void mresolv(struct psum* restrict add, const struct proc* p, result_t v)
-{
-	_fresolv((result_t* restrict)add, p->field, v);
-	//_fresolv((result_t(*)[3])add, p->field, v);
-	//*(((result_t*restrict)add)+p->field) += v;
-}
-
-
-
 inline static __attribute__((const, always_inline, artificial, gnu_inline)) bool is_digit(char c)
 {
 	return !!c[DIGITS];