mirror of
https://github.com/vale981/arb
synced 2025-03-05 17:31:38 -05:00
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/*
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Copyright (C) 2021 Fredrik Johansson
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This file is part of Arb.
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Arb is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "double_interval.h"
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void
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arf_min2(arf_t res, const arf_t x, const arf_t y)
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{
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if (arf_is_nan(x))
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arf_set(res, y);
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else if (arf_is_nan(y))
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arf_set(res, x);
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else
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arf_min(res, x, y);
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}
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void
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arf_max2(arf_t res, const arf_t x, const arf_t y)
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{
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if (arf_is_nan(x))
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arf_set(res, y);
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else if (arf_is_nan(y))
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arf_set(res, x);
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else
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arf_max(res, x, y);
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}
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int main()
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{
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slong iter;
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flint_rand_t state;
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flint_printf("fast_mul....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 1000000 * arb_test_multiplier(); iter++)
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{
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di_t x, y, z;
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arf_t a, b, c, d, ra, rb, rc, rd, va, vb, za, zb;
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arf_init(a); arf_init(b); arf_init(c); arf_init(d);
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arf_init(ra); arf_init(rb); arf_init(rc); arf_init(rd);
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arf_init(va); arf_init(vb);
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arf_init(za);
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arf_init(zb);
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if (iter == 0)
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{
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x.a = 3.5835915908219665e+103;
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x.b = 4.0874812242073031e+295;
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y.a = -8.3711609938763647e+298;
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y.b = -3.414037107833399e+243;
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}
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else
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{
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x = di_randtest(state);
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y = di_randtest(state);
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}
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z = di_fast_mul(x, y);
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DI_CHECK(z)
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arf_set_d(a, x.a);
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arf_set_d(b, x.b);
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arf_set_d(c, y.a);
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arf_set_d(d, y.b);
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arf_mul(ra, a, c, ARF_PREC_EXACT, ARF_RND_DOWN);
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arf_mul(rb, a, d, ARF_PREC_EXACT, ARF_RND_DOWN);
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arf_mul(rc, b, c, ARF_PREC_EXACT, ARF_RND_DOWN);
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arf_mul(rd, b, d, ARF_PREC_EXACT, ARF_RND_DOWN);
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arf_min2(va, ra, rb);
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arf_min2(va, va, rc);
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arf_min2(va, va, rd);
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arf_max2(vb, ra, rb);
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arf_max2(vb, vb, rc);
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arf_max2(vb, vb, rd);
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arf_set_d(za, z.a);
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arf_set_d(zb, z.b);
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if (arf_cmp(va, za) < 0 || arf_cmp(vb, zb) > 0)
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{
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flint_printf("FAIL\n");
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flint_printf("x = "); di_print(x); printf("\n");
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flint_printf("y = "); di_print(y); printf("\n");
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flint_printf("z = "); di_print(z); printf("\n");
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flint_printf("a = "); arf_printd(a, 20); printf("\n");
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flint_printf("b = "); arf_printd(b, 20); printf("\n");
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flint_printf("c = "); arf_printd(c, 20); printf("\n");
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flint_printf("d = "); arf_printd(d, 20); printf("\n");
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flint_printf("ra = "); arf_printd(ra, 20); printf("\n");
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flint_printf("rb = "); arf_printd(rb, 20); printf("\n");
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flint_printf("rc = "); arf_printd(rc, 20); printf("\n");
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flint_printf("rd = "); arf_printd(rd, 20); printf("\n");
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flint_printf("va = "); arf_printd(va, 20); printf("\n");
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flint_printf("vb = "); arf_printd(vb, 20); printf("\n");
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flint_printf("za = "); arf_printd(za, 20); printf("\n");
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flint_printf("zb = "); arf_printd(zb, 20); printf("\n");
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flint_abort();
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}
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arf_clear(a); arf_clear(b); arf_clear(c); arf_clear(d);
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arf_clear(ra); arf_clear(rb); arf_clear(rc); arf_clear(rd);
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arf_clear(va); arf_clear(vb);
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arf_clear(za);
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arf_clear(zb);
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}
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flint_randclear(state);
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flint_cleanup();
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flint_printf("PASS\n");
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return EXIT_SUCCESS;
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}
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