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b58ddff026
* merged mpfr 3.0.0 and gmp 5.0.1 in buildtools trunk git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@37378 a95241bf-73f2-0310-859d-f6bbb57e9c96
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* _mpq_cmp_si -- compare mpq and long/ulong fraction.
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Copyright 2001 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 3 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. If not, see http://www.gnu.org/licenses/. */
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#include "gmp.h"
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#include "gmp-impl.h"
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/* Something like mpq_cmpabs_ui would be more useful for the neg/neg case,
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and perhaps a version accepting a parameter to reverse the test, to make
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it a tail call here. */
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int
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_mpq_cmp_si (mpq_srcptr q, long n, unsigned long d)
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{
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/* need canonical sign to get right result */
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ASSERT (q->_mp_den._mp_size > 0);
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if (q->_mp_num._mp_size >= 0)
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{
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if (n >= 0)
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return _mpq_cmp_ui (q, n, d); /* >=0 cmp >=0 */
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else
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return 1; /* >=0 cmp <0 */
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}
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else
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{
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if (n >= 0)
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return -1; /* <0 cmp >=0 */
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else
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{
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mpq_t qabs;
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qabs->_mp_num._mp_size = ABS (q->_mp_num._mp_size);
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qabs->_mp_num._mp_d = q->_mp_num._mp_d;
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qabs->_mp_den._mp_size = q->_mp_den._mp_size;
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qabs->_mp_den._mp_d = q->_mp_den._mp_d;
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return - _mpq_cmp_ui (qabs, -n, d); /* <0 cmp <0 */
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}
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}
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}
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