39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* double mpf_get_d (mpf_t src) -- return SRC truncated to a double.
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Copyright 1996, 2001, 2002, 2003, 2004 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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double
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mpf_get_d (mpf_srcptr src)
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{
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mp_size_t size, abs_size;
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long exp;
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size = SIZ (src);
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if (UNLIKELY (size == 0))
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return 0.0;
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abs_size = ABS (size);
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exp = (EXP (src) - abs_size) * GMP_NUMB_BITS;
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return mpn_get_d (PTR (src), abs_size, size, exp);
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}
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