Add libmp.

1 files changed, 28 insertions, 0 deletions

diff --git a/src/libmp/port/mpcmp.c b/src/libmp/port/mpcmp.c
new file mode 100644
index 00000000..a2e3cf72
--- /dev/null
+++ b/src/libmp/port/mpcmp.c
@@ -0,0 +1,28 @@
+#include "os.h"
+#include <mp.h>
+#include "dat.h"
+
+// return neg, 0, pos as abs(b1)-abs(b2) is neg, 0, pos
+int
+mpmagcmp(mpint *b1, mpint *b2)
+{
+	int i;
+
+	i = b1->top - b2->top;
+	if(i)
+		return i;
+
+	return mpveccmp(b1->p, b1->top, b2->p, b2->top);
+}
+
+// return neg, 0, pos as b1-b2 is neg, 0, pos
+int
+mpcmp(mpint *b1, mpint *b2)
+{
+	if(b1->sign != b2->sign)
+		return b1->sign - b2->sign;
+	if(b1->sign < 0)
+		return mpmagcmp(b2, b1);
+	else
+		return mpmagcmp(b1, b2);
+}