40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/* mpz_init2 -- initialize mpz, with requested size in bits.
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Copyright 2001, 2002 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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 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 Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser 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., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, 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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mpz_init2 (mpz_ptr x, unsigned long bits)
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{
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mp_size_t limbs;
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limbs = (bits + GMP_NUMB_BITS-1) / GMP_NUMB_BITS;
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limbs = MAX (limbs, 1);
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SIZ(x) = 0;
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ALLOC(x) = limbs;
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PTR(x) = __GMP_ALLOCATE_FUNC_LIMBS (limbs);
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#ifdef __CHECKER__
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/* let the low limb look initialized, for the benefit of mpz_get_ui etc */
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PTR(x)[0] = 0;
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#endif
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}
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