Add zand, zor, zxor, znot, zbtest, zsplit, and the newly introduced ztrunc

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/zsplit.c b/src/zsplit.c
new file mode 100644
index 0000000..40b3e54
--- /dev/null
+++ b/src/zsplit.c
@@ -0,0 +1,31 @@
+/* See LICENSE file for copyright and license details. */
+#include "internals"
+
+
+void
+zsplit(z_t high, z_t low, z_t a, size_t delim)
+{
+	size_t chars;
+
+	if (zzero(a)) {
+		SET_SIGNUM(high, 0);
+		SET_SIGNUM(low, 0);
+		return;
+	}
+
+	chars = delim >> LB_BITS_PER_CHAR;
+
+	if (high == a) {
+		if (a->used < chars)
+			SET_SIGNUM(low, 0);
+		else
+			ztrunc(low, a, delim);
+		zrsh(high, a, delim);
+	} else {
+		zrsh(high, a, delim);
+		if (a->used < chars)
+			SET_SIGNUM(low, 0);
+		else
+			ztrunc(low, a, delim);
+	}
+}