1 files changed, 24 insertions, 0 deletions
diff --git a/src/zsetu.c b/src/zsetu.c
new file mode 100644
index 0000000..78b78bb
--- /dev/null
+++ b/src/zsetu.c
@@ -0,0 +1,24 @@
+/* See LICENSE file for copyright and license details. */
+#include "internals"
+
+#define CHARS_PER_TYPE(t)  (sizeof(t) / (BITS_PER_CHAR >> 3))
+
+
+void
+zsetu(z_t a, unsigned long long int b)
+{
+	if (!b) {
+		SET_SIGNUM(a, 0);
+		return;
+	}
+	if (a->alloced < CHARS_PER_TYPE(b)) {
+		a->alloced = CHARS_PER_TYPE(b);
+		a->chars = realloc(a->chars, CHARS_PER_TYPE(b) * sizeof(*(a->chars)))
+	}
+	SET_SIGNUM(a, 1);
+	a->used = 0;
+	while (b) {
+		a->chars[a->used++] = (uint32_t)b;
+		b >>= BITS_PER_CHAR;
+	}
+}