Remove ucore_ prefix from headers and source files

src/heapsort.c

@@ -0,0 +1,41 @@
+#include <string.h>
+#include "ucore/heapsort.h"
+
+static void
+uc_sift(unsigned char *base, size_t start, size_t count, size_t width,
+     uc_hs_cmp cmp)
+{
+	size_t root = start, child;
+
+	while ((root * 2 + 1) < count) {
+		child = root * 2 + 1;
+		if (child < (count - 1)
+		    && cmp(&base[child * width], &base[(child + 1) * width]) < 0)
+			child++;
+
+		if (cmp(&base[root * width], &base[child * width]) < 0) {
+			memcpy(base + root * width, base + child * width, width);
+			root = child;
+		} else
+			return;
+	}
+}
+
+void
+uc_heapsort(void *base_, size_t count, size_t width,
+	 uc_hs_cmp cmp)
+{
+	int start = count / 2 - 1, end = count - 1;
+	unsigned char *base = base_;
+
+	while (start >= 0) {
+		uc_sift(base, start, count, width, cmp);
+		start--;
+	}
+
+	while (end > 0) {
+		memcpy(base + end * width, base, width);
+		uc_sift(base, 0, end, width, cmp);
+		end--;
+	}
+}