Add libmp.

1 files changed, 35 insertions, 0 deletions

diff --git a/src/libmp/port/mptoui.c b/src/libmp/port/mptoui.c
new file mode 100644
index 00000000..9d80c1df
--- /dev/null
+++ b/src/libmp/port/mptoui.c
@@ -0,0 +1,35 @@
+#include "os.h"
+#include <mp.h>
+#include "dat.h"
+
+/*
+ *  this code assumes that mpdigit is at least as
+ *  big as an int.
+ */
+
+mpint*
+uitomp(uint i, mpint *b)
+{
+	if(b == nil)
+		b = mpnew(0);
+	mpassign(mpzero, b);
+	if(i != 0)
+		b->top = 1;
+	*b->p = i;
+	return b;
+}
+
+uint
+mptoui(mpint *b)
+{
+	uint x;
+
+	x = *b->p;
+	if(b->sign < 0){
+		x = 0;
+	} else {
+		if(b->top > 1 || x > MAXUINT)
+			x =  MAXUINT;
+	}
+	return x;
+}