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author | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:36:36 +0200 |
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committer | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:42:26 +0200 |
commit | a89a14ef5da44684a16b204e7a70460cc8c4922a (patch) | |
tree | b23b4c6b155977909ef508fdae2f48d33d802813 /vendor/gmp-6.3.0/tests/mpf/t-muldiv.c | |
parent | 1db63fcedab0b288820d66e100b1877b1a5a8851 (diff) |
Basic constant folding implementation
Diffstat (limited to 'vendor/gmp-6.3.0/tests/mpf/t-muldiv.c')
-rw-r--r-- | vendor/gmp-6.3.0/tests/mpf/t-muldiv.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/tests/mpf/t-muldiv.c b/vendor/gmp-6.3.0/tests/mpf/t-muldiv.c new file mode 100644 index 0000000..86dca57 --- /dev/null +++ b/vendor/gmp-6.3.0/tests/mpf/t-muldiv.c @@ -0,0 +1,158 @@ +/* Test mpf_mul, mpf_div, mpf_ui_div, and mpf_div_ui. + +Copyright 1996, 2000, 2001, 2003 Free Software Foundation, Inc. + +This file is part of the GNU MP Library test suite. + +The GNU MP Library test suite is free software; you can redistribute it +and/or modify it under the terms of the GNU 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 test suite 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 General +Public License for more details. + +You should have received a copy of the GNU General Public License along with +the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */ + +#include <stdio.h> +#include <stdlib.h> + +#include "gmp-impl.h" +#include "tests.h" + +#ifndef SIZE +#define SIZE 16 +#endif + +int +main (int argc, char **argv) +{ + mp_size_t size; + mp_exp_t exp; + int reps = 10000; + int i; + mpf_t u, v, w, x; + mp_size_t bprec = SIZE * GMP_LIMB_BITS; + mpf_t rerr, limit_rerr; + unsigned long ulimb, vlimb; + int single_flag; + + tests_start (); + + if (argc > 1) + { + reps = strtol (argv[1], 0, 0); + if (argc > 2) + bprec = strtol (argv[2], 0, 0); + } + + mpf_set_default_prec (bprec); + + mpf_init (rerr); + mpf_init (limit_rerr); + + mpf_init (u); + mpf_init (v); + mpf_init (w); + mpf_init (x); + + for (i = 0; i < reps; i++) + { + mp_size_t res_prec; + + res_prec = urandom () % bprec + 1; + mpf_set_prec (w, res_prec); + mpf_set_prec (x, res_prec); + + mpf_set_ui (limit_rerr, 1); + mpf_div_2exp (limit_rerr, limit_rerr, res_prec - 1); + + single_flag = 0; + + if ((urandom () & 1) != 0) + { + size = urandom () % (2 * SIZE) - SIZE; + exp = urandom () % SIZE; + mpf_random2 (u, size, exp); + } + else + { + ulimb = urandom (); + mpf_set_ui (u, ulimb); + single_flag = 1; + } + + if ((urandom () & 1) != 0) + { + size = urandom () % (2 * SIZE) - SIZE; + exp = urandom () % SIZE; + mpf_random2 (v, size, exp); + } + else + { + vlimb = urandom (); + mpf_set_ui (v, vlimb); + single_flag = 2; + } + + if (mpf_sgn (v) == 0) + continue; + + mpf_div (w, u, v); + mpf_mul (x, w, v); + mpf_reldiff (rerr, u, x); + if (mpf_cmp (rerr, limit_rerr) > 0) + { + printf ("ERROR in mpf_mul or mpf_div after %d tests\n", i); + printf (" u = "); mpf_dump (u); + printf (" v = "); mpf_dump (v); + printf (" x = "); mpf_dump (x); + printf (" w = "); mpf_dump (w); + abort (); + } + + if (single_flag == 2) + { + mpf_div_ui (x, u, vlimb); + mpf_reldiff (rerr, w, x); + if (mpf_cmp (rerr, limit_rerr) > 0) + { + printf ("ERROR in mpf_div or mpf_div_ui after %d tests\n", i); + printf (" u = "); mpf_dump (u); + printf (" v = "); mpf_dump (v); + printf (" x = "); mpf_dump (x); + printf (" w = "); mpf_dump (w); + abort (); + } + } + + if (single_flag == 1) + { + mpf_ui_div (x, ulimb, v); + mpf_reldiff (rerr, w, x); + if (mpf_cmp (rerr, limit_rerr) > 0) + { + printf ("ERROR in mpf_div or mpf_ui_div after %d tests\n", i); + printf (" u = "); mpf_dump (u); + printf (" v = "); mpf_dump (v); + printf (" x = "); mpf_dump (x); + printf (" w = "); mpf_dump (w); + abort (); + } + } + } + + mpf_clear (rerr); + mpf_clear (limit_rerr); + + mpf_clear (u); + mpf_clear (v); + mpf_clear (w); + mpf_clear (x); + + tests_end (); + exit (0); +} |