Import sources from 2011-03-30 iso image

1 files changed, 33 insertions, 0 deletions

diff --git a/sys/src/libmp/port/mptoui.c b/sys/src/libmp/port/mptoui.c
new file mode 100755
index 000000000..41c0b0b67
--- /dev/null
+++ b/sys/src/libmp/port/mptoui.c
@@ -0,0 +1,33 @@
+#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 || (sizeof(mpdigit) > sizeof(uint) && x > MAXUINT))
+		x =  MAXUINT;
+	return x;
+}