added general extensions of Q

qext.h

@@ -0,0 +1,37 @@
+#ifndef QEXT_H
+#define QEXT_H
+
+#include <gmp.h>
+
+#define QEXT_RANK 4
+
+struct qext_number_internal {
+	int rk;
+	mpq_t *a;
+};
+
+typedef struct qext_number_internal qext_number[1];
+
+void qext_init(qext_number x);
+void qext_clear(qext_number x);
+void qext_set(qext_number x, qext_number y);
+void qext_set_int(qext_number x, int y);
+void qext_add(qext_number result, qext_number x, qext_number y);
+void qext_sub(qext_number result, qext_number x, qext_number y);
+void qext_mul(qext_number out, qext_number x, qext_number y);
+void qext_div(qext_number out, qext_number x, qext_number y);
+int qext_cmp(qext_number x, qext_number y);
+void qext_print(qext_number x);
+void qext_sprint(qext_number x);
+
+static void qext_set_zero(qext_number x)
+{
+	qext_set_int(x, 0);
+}
+
+static void qext_set_one(qext_number x)
+{
+	qext_set_int(x, 1);
+}
+
+#endif