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4c74403188
Change-Id: Iae65e95cfa0d92091b8b0a424ae36d88efa76aa9 Reviewed-on: https://review.haiku-os.org/c/buildtools/+/3020 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/* mpq_set_si(dest,ulong_num,ulong_den) -- Set DEST to the rational number
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ULONG_NUM/ULONG_DEN.
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Copyright 1991, 1994, 1995, 2001, 2003, 2018 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 either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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or
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* the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any
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later version.
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or both in parallel, as here.
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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 General Public License
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for more details.
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You should have received copies of the GNU General Public License and the
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GNU Lesser General Public License along with the GNU MP Library. If not,
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see https://www.gnu.org/licenses/. */
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#include "gmp-impl.h"
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void
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mpq_set_si (mpq_t dest, signed long int num, unsigned long int den)
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{
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if (GMP_NUMB_BITS < BITS_PER_ULONG)
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{
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if (num == 0) /* Canonicalize 0/d to 0/1. */
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den = 1;
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mpz_set_si (mpq_numref (dest), num);
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mpz_set_ui (mpq_denref (dest), den);
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return;
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}
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if (num == 0)
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{
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/* Canonicalize 0/d to 0/1. */
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den = 1;
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SIZ(NUM(dest)) = 0;
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}
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else
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{
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MPZ_NEWALLOC (NUM(dest), 1)[0] = ABS_CAST (unsigned long, num);
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SIZ(NUM(dest)) = num > 0 ? 1 : -1;
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}
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MPZ_NEWALLOC (DEN(dest), 1)[0] = den;
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SIZ(DEN(dest)) = (den != 0);
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}
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