version 1.1, 2000/01/10 15:35:27 |
version 1.1.1.3, 2003/08/25 16:06:34 |
|
|
/* mpz_sqrtrem(root,rem,x) -- Set ROOT to floor(sqrt(X)) and REM |
/* mpz_sqrtrem(root,rem,x) -- Set ROOT to floor(sqrt(X)) and REM |
to the remainder, i.e. X - ROOT**2. |
to the remainder, i.e. X - ROOT**2. |
|
|
Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc. |
Copyright 1991, 1993, 1994, 1996, 2000, 2001 Free Software Foundation, Inc. |
|
|
This file is part of the GNU MP Library. |
This file is part of the GNU MP Library. |
|
|
The GNU MP Library is free software; you can redistribute it and/or modify |
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 |
it under the terms of the GNU Lesser General Public License as published by |
the Free Software Foundation; either version 2 of the License, or (at your |
the Free Software Foundation; either version 2.1 of the License, or (at your |
option) any later version. |
option) any later version. |
|
|
The GNU MP Library is distributed in the hope that it will be useful, but |
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 |
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. |
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 |
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, |
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
MA 02111-1307, USA. */ |
MA 02111-1307, USA. */ |
|
|
|
#include <stdio.h> /* for NULL */ |
#include "gmp.h" |
#include "gmp.h" |
#include "gmp-impl.h" |
#include "gmp-impl.h" |
|
#ifdef BERKELEY_MP |
|
#include "mp.h" |
|
#endif |
|
|
#ifndef BERKELEY_MP |
|
void |
void |
#if __STDC__ |
#ifndef BERKELEY_MP |
mpz_sqrtrem (mpz_ptr root, mpz_ptr rem, mpz_srcptr op) |
mpz_sqrtrem (mpz_ptr root, mpz_ptr rem, mpz_srcptr op) |
#else |
|
mpz_sqrtrem (root, rem, op) |
|
mpz_ptr root; |
|
mpz_ptr rem; |
|
mpz_srcptr op; |
|
#endif |
|
#else /* BERKELEY_MP */ |
#else /* BERKELEY_MP */ |
void |
|
#if __STDC__ |
|
msqrt (mpz_srcptr op, mpz_ptr root, mpz_ptr rem) |
msqrt (mpz_srcptr op, mpz_ptr root, mpz_ptr rem) |
#else |
|
msqrt (op, root, rem) |
|
mpz_srcptr op; |
|
mpz_ptr root; |
|
mpz_ptr rem; |
|
#endif |
|
#endif /* BERKELEY_MP */ |
#endif /* BERKELEY_MP */ |
{ |
{ |
mp_size_t op_size, root_size, rem_size; |
mp_size_t op_size, root_size, rem_size; |
Line 53 msqrt (op, root, rem) |
|
Line 42 msqrt (op, root, rem) |
|
|
|
TMP_MARK (marker); |
TMP_MARK (marker); |
op_size = op->_mp_size; |
op_size = op->_mp_size; |
if (op_size < 0) |
if (op_size <= 0) |
op_size = 1 / (op_size > 0); /* Divide by zero for negative OP. */ |
{ |
|
if (op_size < 0) |
|
SQRT_OF_NEGATIVE; |
|
SIZ(root) = 0; |
|
SIZ(rem) = 0; |
|
return; |
|
} |
|
|
if (rem->_mp_alloc < op_size) |
if (rem->_mp_alloc < op_size) |
_mpz_realloc (rem, op_size); |
_mpz_realloc (rem, op_size); |
Line 73 msqrt (op, root, rem) |
|
Line 68 msqrt (op, root, rem) |
|
free_me_size = root->_mp_alloc; |
free_me_size = root->_mp_alloc; |
} |
} |
else |
else |
(*_mp_free_func) (root_ptr, root->_mp_alloc * BYTES_PER_MP_LIMB); |
(*__gmp_free_func) (root_ptr, root->_mp_alloc * BYTES_PER_MP_LIMB); |
|
|
root->_mp_alloc = root_size; |
root->_mp_alloc = root_size; |
root_ptr = (mp_ptr) (*_mp_allocate_func) (root_size * BYTES_PER_MP_LIMB); |
root_ptr = (mp_ptr) (*__gmp_allocate_func) (root_size * BYTES_PER_MP_LIMB); |
root->_mp_d = root_ptr; |
root->_mp_d = root_ptr; |
} |
} |
else |
else |
Line 102 msqrt (op, root, rem) |
|
Line 97 msqrt (op, root, rem) |
|
rem->_mp_size = rem_size; |
rem->_mp_size = rem_size; |
|
|
if (free_me != NULL) |
if (free_me != NULL) |
(*_mp_free_func) (free_me, free_me_size * BYTES_PER_MP_LIMB); |
(*__gmp_free_func) (free_me, free_me_size * BYTES_PER_MP_LIMB); |
TMP_FREE (marker); |
TMP_FREE (marker); |
} |
} |