X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb-python/blobdiff_plain/0040152918b6695e73807fd479024db8a27a83fb..9f49c854939cf36901a4a31e43abdb4ea440060f:/mp.c

diff --git a/mp.c b/mp.c
index 705a65e..038324a 100644
--- a/mp.c
+++ b/mp.c
@@ -927,6 +927,16 @@ end:
   return (z);
 }
 
+static PyObject *meth__MP_factorial(PyObject *me, PyObject *arg)
+{
+  unsigned long i;
+  mp *x;
+  if (!PyArg_ParseTuple(arg, "OO&:factorial", &me, convulong, &i))
+    return (0);
+  x = mp_factorial(i);
+  return mp_pywrap(x);
+}
+
 #define LOADOP(pre, py, name)						\
   static PyObject *meth__##py##_##name(PyObject *me, PyObject *arg)	\
   {									\
@@ -2446,6 +2456,8 @@ fromstring(STR, radix = 0) -> (X, REST)\n\
 Parse STR as a binary polynomial, according to radix.  If radix is zero,\n\
 read a prefix from STR to decide radix: allow `0' for octal, `0x' for hex\n\
 or `R_' for other radix R.")
+  METH	(_MP_factorial,		"\
+factorial(I) -> I!: compute factorial")
   METH	(_MP_loadl,		"\
 loadl(STR) -> X: read little-endian bytes")
   METH	(_MP_loadb,		"\