initial import of the C runtime

src/runtime/c/gu/hash.c

@@ -0,0 +1,77 @@
+#include <gu/hash.h>
+
+GuHash
+gu_hash_bytes(GuHash h, const uint8_t* buf, size_t len)
+{
+	for (size_t n = 0; n < len; n++) {
+		h = gu_hash_byte(h, buf[n]);
+	}
+	return h;
+}
+
+static bool
+gu_int_eq_fn(GuEquality* self, const void* p1, const void* p2)
+{
+	(void) self;
+	const int* ip1 = p1;
+	const int* ip2 = p2;
+	return *ip1 == *ip2;
+}
+
+static GuHash
+gu_int_hash_fn(GuHasher* self, const void* p)
+{
+	(void) self;
+	return (GuHash) *(const int*) p;
+}
+
+GuHasher gu_int_hasher[1] = {
+	{
+		{ gu_int_eq_fn },
+		gu_int_hash_fn
+	}
+};
+
+static bool
+gu_addr_eq_fn(GuEquality* self, const void* p1, const void* p2)
+{
+	(void) self;
+	return (p1 == p2);
+}
+
+static GuHash
+gu_addr_hash_fn(GuHasher* self, const void* p)
+{
+	(void) self;
+	return (GuHash) (uintptr_t) p;
+}
+
+GuHasher gu_addr_hasher[1] = {
+	{
+		{ gu_addr_eq_fn },
+		gu_addr_hash_fn
+	}
+};
+
+static bool
+gu_word_eq_fn(GuEquality* self, const void* p1, const void* p2)
+{
+	(void) self;
+	const GuWord* wp1 = p1;
+	const GuWord* wp2 = p2;
+	return (*wp1 == *wp2);
+}
+
+static GuHash
+gu_word_hash_fn(GuHasher* self, const void* p)
+{
+	(void) self;
+	return (GuHash) (uintptr_t) p;
+}
+
+GuHasher gu_word_hasher[1] = {
+	{
+		{ gu_word_eq_fn },
+		gu_word_hash_fn
+	}
+};