82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*=============================================================================
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This file is part of FLINT.
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FLINT 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 of the License, or
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(at your option) any later version.
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FLINT 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 FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2009 William Hart
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******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <gmp.h>
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#include "flint.h"
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#include "ulong_extras.h"
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int main(void)
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{
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int i, j, result;
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FLINT_TEST_INIT(state);
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flint_printf("umul_ppmm....");
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fflush(stdout);
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for (i = 0; i < 1000000; i++)
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{
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mp_limb_t ph1, pl1, ph2, pl2, pl2old, m1, m2, bit;
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m1 = n_randtest(state);
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m2 = n_randtest(state);
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umul_ppmm(ph1, pl1, m1, m2);
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pl2old = UWORD(0);
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pl2 = UWORD(0);
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ph2 = UWORD(0);
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bit = UWORD(1);
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for (j = 0; j < FLINT_BITS; j++)
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{
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if (m2 & bit)
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{
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pl2 += (m1 << j);
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ph2 += (pl2 < pl2old);
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ph2 += r_shift(m1, FLINT_BITS - j);
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pl2old = pl2;
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}
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bit <<= 1;
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}
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result = ((ph2 == ph1) && (pl2 == pl1));
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if (!result)
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{
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flint_printf("FAIL:\n");
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flint_printf("m1 = %wu, m2 = %wu\n", m1, m2);
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flint_printf("ph2 = %wu, ph1 = %wu, pl2 = %wu, pl1 = %wu\n", ph2, ph1, pl2, pl1);
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abort();
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}
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}
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FLINT_TEST_CLEANUP(state);
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flint_printf("PASS\n");
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return 0;
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}
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