1 files changed, 129 insertions, 0 deletions
diff --git a/contrib/libgmp/mpn/tests/divrem.c b/contrib/libgmp/mpn/tests/divrem.c
new file mode 100644
index 0000000..6eafc99
--- /dev/null
+++ b/contrib/libgmp/mpn/tests/divrem.c
@@ -0,0 +1,129 @@
+#include <stdio.h>
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "longlong.h"
+
+#ifndef USG
+#include <sys/time.h>
+#include <sys/resource.h>
+
+unsigned long
+cputime ()
+{
+    struct rusage rus;
+
+    getrusage (0, &rus);
+    return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
+}
+#else
+#include <time.h>
+
+#ifndef CLOCKS_PER_SEC
+#define CLOCKS_PER_SEC 1000000
+#endif
+
+#if CLOCKS_PER_SEC >= 10000
+#define CLOCK_TO_MILLISEC(cl) ((cl) / (CLOCKS_PER_SEC / 1000))
+#else
+#define CLOCK_TO_MILLISEC(cl) ((cl) * 1000 / CLOCKS_PER_SEC)
+#endif
+
+unsigned long
+cputime ()
+{
+  return CLOCK_TO_MILLISEC (clock ());
+}
+#endif
+
+#define M * 1000000
+
+#ifndef CLOCK
+#if defined (__m88k__)
+#define CLOCK 20 M
+#elif defined (__i386__)
+#define CLOCK (16.666667 M)
+#elif defined (__m68k__)
+#define CLOCK (20 M)
+#elif defined (_IBMR2)
+#define CLOCK (25 M)
+#elif defined (__sparc__)
+#define CLOCK (20 M)
+#elif defined (__sun__)
+#define CLOCK (20 M)
+#elif defined (__mips)
+#define CLOCK (40 M)
+#elif defined (__hppa__)
+#define CLOCK (50 M)
+#elif defined (__alpha)
+#define CLOCK (133 M)
+#else
+#error "Don't know CLOCK of your machine"
+#endif
+#endif
+
+#ifndef OPS
+#define OPS 20000000
+#endif
+#ifndef SIZE
+#define SIZE 100
+#endif
+#ifndef TIMES
+#define TIMES OPS/SIZE
+#else
+#undef OPS
+#define OPS (SIZE*TIMES)
+#endif
+
+main ()
+{
+  mp_limb_t nptr[2 * SIZE];
+  mp_limb_t dptr[SIZE];
+  mp_limb_t qptr[2 * SIZE];
+  mp_limb_t pptr[2 * SIZE];
+  mp_limb_t rptr[2 * SIZE];
+  mp_size_t nsize, dsize, qsize, rsize, psize;
+  int test;
+  mp_limb_t qlimb;
+
+  for (test = 0; ; test++)
+    {
+#ifdef RANDOM
+      nsize = random () % (2 * SIZE) + 1;
+      dsize = random () % nsize + 1;
+#else
+      nsize = 2 * SIZE;
+      dsize = SIZE;
+#endif
+
+      mpn_random2 (nptr, nsize);
+      mpn_random2 (dptr, dsize);
+      dptr[dsize - 1] |= (mp_limb_t) 1 << (BITS_PER_MP_LIMB - 1);
+
+      MPN_COPY (rptr, nptr, nsize);
+      qlimb = mpn_divrem (qptr, (mp_size_t) 0, rptr, nsize, dptr, dsize);
+      rsize = dsize;
+      qsize = nsize - dsize;
+      qptr[qsize] = qlimb;
+      qsize += qlimb;
+      if (qsize == 0 || qsize > 2 * SIZE)
+	{
+	  continue;		/* bogus */
+	}
+      else
+	{
+	  mp_limb_t cy;
+	  if (qsize > dsize)
+	    mpn_mul (pptr, qptr, qsize, dptr, dsize);
+	  else
+	    mpn_mul (pptr, dptr, dsize, qptr, qsize);
+	  psize = qsize + dsize;
+	  psize -= pptr[psize - 1] == 0;
+	  cy = mpn_add (pptr, pptr, psize, rptr, rsize);
+	  pptr[psize] = cy;
+	  psize += cy;
+	}
+
+      if (nsize != psize || mpn_cmp (nptr, pptr, nsize) != 0)
+	abort ();
+    }
+}