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/* mpn_add_1 --
Copyright (C) 1993, 1994 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
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
License for more details.
You should have received a copy of the GNU Library General Public License
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define __mpn_add_1 __noname
#include "gmp.h"
#undef __mpn_add_1
#include "gmp-impl.h"
mp_limb
__mpn_add_1 (res_ptr, s1_ptr, s1_size, s2_limb)
register mp_ptr res_ptr;
register mp_srcptr s1_ptr;
register mp_size_t s1_size;
register mp_limb s2_limb;
{
register mp_limb x;
x = *s1_ptr++;
s2_limb = x + s2_limb;
*res_ptr++ = s2_limb;
if (s2_limb < x)
{
while (--s1_size != 0)
{
x = *s1_ptr++ + 1;
*res_ptr++ = x;
if (x != 0)
goto fin;
}
return 1;
}
fin:
if (res_ptr != s1_ptr)
{
mp_size_t i;
for (i = 0; i < s1_size - 1; i++)
res_ptr[i] = s1_ptr[i];
}
return 0;
}
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