47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* mpq_set_den(dest,den) -- Set the denominator of DEST from DEN.
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If DEN < 0 change the sign of the numerator of DEST.
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Copyright (C) 1991 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 General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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The GNU MP Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the GNU MP Library; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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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#ifdef __STDC__
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mpq_set_den (MP_RAT *dest, const MP_INT *den)
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#else
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mpq_set_den (dest, den)
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MP_RAT *dest;
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const MP_INT *den;
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#endif
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{
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mp_size size = den->size;
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mp_size abs_size = ABS (size);
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if (dest->den.alloc < abs_size)
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_mpz_realloc (&(dest->den), abs_size);
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MPN_COPY (dest->den.d, den->d, abs_size);
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dest->den.size = abs_size;
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/* The denominator is always positive; move the sign to the numerator. */
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if (size < 0)
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dest->num.size = -dest->num.size;
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}
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