| /* _mpq_cmp_si -- compare mpq and long/ulong fraction. |
| |
| Copyright 2001 Free Software Foundation, Inc. |
| |
| This file is part of the GNU MP Library. |
| |
| The GNU MP Library is free software; you can redistribute it and/or modify |
| it under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or (at your |
| option) any later version. |
| |
| The GNU MP Library is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ |
| |
| #include "gmp.h" |
| #include "gmp-impl.h" |
| |
| |
| /* Something like mpq_cmpabs_ui would be more useful for the neg/neg case, |
| and perhaps a version accepting a parameter to reverse the test, to make |
| it a tail call here. */ |
| |
| int |
| _mpq_cmp_si (mpq_srcptr q, long n, unsigned long d) |
| { |
| /* need canonical sign to get right result */ |
| ASSERT (q->_mp_den._mp_size > 0); |
| |
| if (q->_mp_num._mp_size >= 0) |
| { |
| if (n >= 0) |
| return _mpq_cmp_ui (q, n, d); /* >=0 cmp >=0 */ |
| else |
| return 1; /* >=0 cmp <0 */ |
| } |
| else |
| { |
| if (n >= 0) |
| return -1; /* <0 cmp >=0 */ |
| else |
| { |
| mpq_t qabs; |
| qabs->_mp_num._mp_size = ABS (q->_mp_num._mp_size); |
| qabs->_mp_num._mp_d = q->_mp_num._mp_d; |
| qabs->_mp_den._mp_size = q->_mp_den._mp_size; |
| qabs->_mp_den._mp_d = q->_mp_den._mp_d; |
| |
| return - _mpq_cmp_ui (qabs, -n, d); /* <0 cmp <0 */ |
| } |
| } |
| } |