--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bn_mp_sqr.c	Mon May 31 18:25:22 2004 +0000
@@ -0,0 +1,41 @@
+/* LibTomMath, multiple-precision integer library -- Tom St Denis
+ *
+ * LibTomMath is a library that provides multiple-precision
+ * integer arithmetic as well as number theoretic functionality.
+ *
+ * The library was designed directly after the MPI library by
+ * Michael Fromberger but has been written from scratch with
+ * additional optimizations in place.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, [email protected], http://math.libtomcrypt.org
+ */
+#include <tommath.h>
+
+/* computes b = a*a */
+int
+mp_sqr (mp_int * a, mp_int * b)
+{
+  int     res;
+
+  /* use Toom-Cook? */
+  if (a->used >= TOOM_SQR_CUTOFF) {
+    res = mp_toom_sqr(a, b);
+  /* Karatsuba? */
+  } else if (a->used >= KARATSUBA_SQR_CUTOFF) {
+    res = mp_karatsuba_sqr (a, b);
+  } else {
+    /* can we use the fast comba multiplier? */
+    if ((a->used * 2 + 1) < MP_WARRAY && 
+         a->used < 
+         (1 << (sizeof(mp_word) * CHAR_BIT - 2*DIGIT_BIT - 1))) {
+      res = fast_s_mp_sqr (a, b);
+    } else {
+      res = s_mp_sqr (a, b);
+    }
+  }
+  b->sign = MP_ZPOS;
+  return res;
+}