Index: gcc/gmp/mpn/generic/sb_bdiv_q.c |
diff --git a/gcc/gmp/mpn/generic/sb_bdiv_q.c b/gcc/gmp/mpn/generic/sb_bdiv_q.c |
deleted file mode 100644 |
index 474c804d48a38ad5786a03bff2dbf9bfe4f1644a..0000000000000000000000000000000000000000 |
--- a/gcc/gmp/mpn/generic/sb_bdiv_q.c |
+++ /dev/null |
@@ -1,91 +0,0 @@ |
-/* mpn_sb_bdiv_q -- schoolbook Hensel division with precomputed inverse, |
- returning quotient only. |
- |
- Contributed to the GNU project by Niels Möller. |
- |
- THE FUNCTIONS IN THIS FILE ARE INTERNAL FUNCTIONS WITH MUTABLE INTERFACES. |
- IT IS ONLY SAFE TO REACH THEM THROUGH DOCUMENTED INTERFACES. IN FACT, IT IS |
- ALMOST GUARANTEED THAT THEY'LL CHANGE OR DISAPPEAR IN A FUTURE GMP RELEASE. |
- |
-Copyright 2005, 2006 Free Software Foundation, Inc. |
- |
-This file is part of the GNU MP Library. |
- |
-The GNU MP Library is free software; you can redistribute it and/or modify |
-it under the terms of the GNU Lesser General Public License as published by |
-the Free Software Foundation; either version 3 of the License, or (at your |
-option) any later version. |
- |
-The GNU MP Library is distributed in the hope that it will be useful, but |
-WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
-or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
-License for more details. |
- |
-You should have received a copy of the GNU Lesser General Public License |
-along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ |
- |
-#include "gmp.h" |
-#include "gmp-impl.h" |
- |
- |
-/* Computes Q = N / D mod B^nn, destroys N. |
- Clobbers N. |
- |
- D must be odd. dinv is (-D)^-1 mod B. |
- |
- |
- The straightforward way to compute Q is to cancel one limb at a time, using |
- |
- qp[i] = D^{-1} * np[i] (mod B) |
- N -= B^i * qp[i] * D |
- |
- But we prefer addition to subtraction, since mpn_addmul_1 is often faster |
- than mpn_submul_1. Q = - N / D can be computed by iterating |
- |
- qp[i] = (-D)^{-1} * np[i] (mod B) |
- N += B^i * qp[i] * D |
- |
- And then we flip the sign, -Q = (not Q) + 1. |
-*/ |
- |
-void |
-mpn_sb_bdiv_q (mp_ptr qp, |
- mp_ptr np, mp_size_t nn, |
- mp_srcptr dp, mp_size_t dn, |
- mp_limb_t dinv) |
-{ |
- mp_size_t i; |
- mp_limb_t qh; |
- |
- ASSERT (nn > 0); |
- ASSERT (dn > 0); |
- ASSERT (nn >= dn); |
- ASSERT (dp[0] & 1); |
- |
- for (i = 0; i < nn - dn; i++) |
- { |
- mp_limb_t cy; |
- mp_limb_t q; |
- |
- q = dinv * np[i]; |
- qp[i] = ~q; |
- cy = mpn_addmul_1 (np + i, dp, dn, q); |
- mpn_add_1 (np + i + dn, np + i + dn, nn - i - dn, cy); |
- ASSERT (np[i] == 0); |
- } |
- |
- for (; i < nn - 1; i++) |
- { |
- mp_limb_t q; |
- |
- q = dinv * np[i]; |
- qp[i] = ~q; |
- mpn_addmul_1 (np + i, dp, nn - i, q); |
- |
- ASSERT (np[i] == 0); |
- } |
- |
- /* Final limb */ |
- qp[nn - 1] = ~(dinv * np[nn - 1]); |
- qh = mpn_add_1 (qp, qp, nn, 1); /* FIXME: can we get carry? */ |
-} |