aa9bc17601
BMakefiles and other bits will follow. Requested by: Andrey Chernov Made world by: Chuck Robey
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/* mpf_sqrt_ui -- Compute the square root of an unsigned integer.
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Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include "gmp.h"
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#include "gmp-impl.h"
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void
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#if __STDC__
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mpf_sqrt_ui (mpf_ptr r, unsigned long int u)
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#else
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mpf_sqrt_ui (r, u)
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mpf_ptr r;
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unsigned long int u;
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#endif
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{
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mp_size_t rsize;
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mp_ptr tp;
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mp_size_t prec;
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TMP_DECL (marker);
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if (u == 0)
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{
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r->_mp_size = 0;
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r->_mp_exp = 0;
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return;
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}
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TMP_MARK (marker);
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prec = r->_mp_prec;
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rsize = 2 * prec + 1;
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tp = (mp_ptr) TMP_ALLOC (rsize * BYTES_PER_MP_LIMB);
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MPN_ZERO (tp, rsize - 1);
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tp[rsize - 1] = u;
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mpn_sqrtrem (r->_mp_d, NULL, tp, rsize);
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r->_mp_size = prec + 1;
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r->_mp_exp = 1;
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TMP_FREE (marker);
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}
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