Add fallback functions for mpn_copyd, mpn_copyi and mpn_zero.

1 files changed, 26 insertions, 0 deletions

diff --git a/gmp-glue.c b/gmp-glue.c
index b468699b..a2633a50 100644
--- a/gmp-glue.c
+++ b/gmp-glue.c
@@ -106,6 +106,32 @@ mpz_roinit_n (mpz_ptr x, const mp_limb_t *xp, mp_size_t xs)
 }
 #endif /* !GMP_HAVE_mpz_limbs_read */
 
+#if !GMP_HAVE_mpn_copyd
+void
+mpn_copyd (mp_ptr dst, mp_srcptr src, mp_size_t n)
+{
+  mp_size_t i;
+  for (i = n - 1; i >= 0; i--)
+    dst[i] = src[i];
+}
+
+void
+mpn_copyi (mp_ptr dst, mp_srcptr src, mp_size_t n)
+{
+  mp_size_t i;
+  for (i = 0; i < n; i++)
+    dst[i] = src[i];
+}
+
+void
+mpn_zero (mp_ptr ptr, mp_size_t n)
+{
+  mp_size_t i;
+  for (i = 0; i < n; i++)
+    ptr[i] = 0;
+}
+#endif /* !GMP_HAVE_mpn_copyd */
+
 /* Additional convenience functions. */
 
 int