remove empty dir

[ghc-hetmet.git] / ghc / rts / gmp / mpz / tdiv_q_ui.c

diff --git a/ghc/rts/gmp/mpz/tdiv_q_ui.c b/ghc/rts/gmp/mpz/tdiv_q_ui.c
index 9048e0a..a2e3462 100644 (file)
--- a/ghc/rts/gmp/mpz/tdiv_q_ui.c
+++ b/ghc/rts/gmp/mpz/tdiv_q_ui.c
@@ -1,21 +1,21 @@
 /* mpz_tdiv_q_ui(quot, dividend, divisor_limb)
    -- Divide DIVIDEND by DIVISOR_LIMB and store the result in QUOT.
 
-Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
+Copyright (C) 1991, 1993, 1994, 1996, 1998 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 Library General Public License as published by
-the Free Software Foundation; either version 2 of the License, or (at your
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Library General Public
+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 Library General Public License
+You should have received a copy of the GNU Lesser General Public License
 along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 MA 02111-1307, USA. */
@@ -23,7 +23,7 @@ MA 02111-1307, USA. */
 #include "gmp.h"
 #include "gmp-impl.h"
 
-void
+unsigned long int
 #if __STDC__
 mpz_tdiv_q_ui (mpz_ptr quot, mpz_srcptr dividend, unsigned long int divisor)
 #else
@@ -36,16 +36,14 @@ mpz_tdiv_q_ui (quot, dividend, divisor)
   mp_size_t dividend_size;
   mp_size_t size;
   mp_ptr quot_ptr;
+  mp_limb_t remainder_limb;
+
+  if (divisor == 0)
+    DIVIDE_BY_ZERO;
 
   dividend_size = dividend->_mp_size;
   size = ABS (dividend_size);
 
-  if (size == 0)
-    {
-      quot->_mp_size = 0;
-      return;
-    }
-
   /* No need for temporary allocation and copying if QUOT == DIVIDEND as
      the divisor is just one limb, and thus no intermediate remainders
      need to be stored.  */
@@ -55,9 +53,12 @@ mpz_tdiv_q_ui (quot, dividend, divisor)
 
   quot_ptr = quot->_mp_d;
 
-  mpn_divmod_1 (quot_ptr, dividend->_mp_d, size, (mp_limb_t) divisor);
+  remainder_limb
+    = mpn_divmod_1 (quot_ptr, dividend->_mp_d, size, (mp_limb_t) divisor);
 
   /* The quotient is SIZE limbs, but the most significant might be zero. */
-  size -= quot_ptr[size - 1] == 0;
+  size -= size != 0 && quot_ptr[size - 1] == 0;
   quot->_mp_size = dividend_size >= 0 ? size : -size;
+
+  return remainder_limb;
 }