From b3f61791f1e9095ce8ae9c6d6415b4ee94e2f7eb Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Sun, 21 Mar 2004 14:06:38 +0000
Subject: Add libmp.

---
 src/libmp/port/mpmod.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 src/libmp/port/mpmod.c

(limited to 'src/libmp/port/mpmod.c')

diff --git a/src/libmp/port/mpmod.c b/src/libmp/port/mpmod.c
new file mode 100644
index 00000000..91bebfa2
--- /dev/null
+++ b/src/libmp/port/mpmod.c
@@ -0,0 +1,15 @@
+#include "os.h"
+#include <mp.h>
+#include "dat.h"
+
+// remainder = b mod m
+//
+// knuth, vol 2, pp 398-400
+
+void
+mpmod(mpint *b, mpint *m, mpint *remainder)
+{
+	mpdiv(b, m, nil, remainder);
+	if(remainder->sign < 0)
+		mpadd(m, remainder, remainder);
+}
-- 
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