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Diffstat (limited to 'gmp-6.3.0/tests/mpf/t-get_si.c')
| -rw-r--r-- | gmp-6.3.0/tests/mpf/t-get_si.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/gmp-6.3.0/tests/mpf/t-get_si.c b/gmp-6.3.0/tests/mpf/t-get_si.c new file mode 100644 index 0000000..5510b04 --- /dev/null +++ b/gmp-6.3.0/tests/mpf/t-get_si.c @@ -0,0 +1,222 @@ +/* Exercise mpz_get_si. + +Copyright 2000, 2001 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" + + +void +check_data (void) +{ + static const struct { + int base; + const char *f; + long want; + } data[] = { + { 10, "0", 0L }, + { 10, "1", 1L }, + { 10, "-1", -1L }, + { 10, "2", 2L }, + { 10, "-2", -2L }, + { 10, "12345", 12345L }, + { 10, "-12345", -12345L }, + + /* fraction bits ignored */ + { 10, "0.5", 0L }, + { 10, "-0.5", 0L }, + { 10, "1.1", 1L }, + { 10, "-1.1", -1L }, + { 10, "1.9", 1L }, + { 10, "-1.9", -1L }, + { 16, "1.000000000000000000000000000000000000000000000000001", 1L }, + { 16, "-1.000000000000000000000000000000000000000000000000001", -1L }, + + /* low bits extracted (this is undocumented) */ + { 16, "1000000000000000000000000000000000000000000000000001", 1L }, + { 16, "-1000000000000000000000000000000000000000000000000001", -1L }, + }; + + int i; + mpf_t f; + long got; + + mpf_init2 (f, 2000L); + for (i = 0; i < numberof (data); i++) + { + mpf_set_str_or_abort (f, data[i].f, data[i].base); + + got = mpf_get_si (f); + if (got != data[i].want) + { + printf ("mpf_get_si wrong at data[%d]\n", i); + printf (" f \"%s\"\n", data[i].f); + printf (" dec "); mpf_out_str (stdout, 10, 0, f); printf ("\n"); + printf (" hex "); mpf_out_str (stdout, 16, 0, f); printf ("\n"); + printf (" size %ld\n", (long) SIZ(f)); + printf (" exp %ld\n", (long) EXP(f)); + printf (" got %ld (0x%lX)\n", got, got); + printf (" want %ld (0x%lX)\n", data[i].want, data[i].want); + abort(); + } + } + mpf_clear (f); +} + + +void +check_max (void) +{ + mpf_t f; + long want; + long got; + + mpf_init2 (f, 200L); + +#define CHECK_MAX(name) \ + if (got != want) \ + { \ + printf ("mpf_get_si wrong on %s\n", name); \ + printf (" f "); \ + mpf_out_str (stdout, 10, 0, f); printf (", hex "); \ + mpf_out_str (stdout, 16, 0, f); printf ("\n"); \ + printf (" got %ld, hex %lX\n", got, got); \ + printf (" want %ld, hex %lX\n", want, want); \ + abort(); \ + } + + want = LONG_MAX; + mpf_set_si (f, want); + got = mpf_get_si (f); + CHECK_MAX ("LONG_MAX"); + + want = LONG_MIN; + mpf_set_si (f, want); + got = mpf_get_si (f); + CHECK_MAX ("LONG_MIN"); + + mpf_clear (f); +} + + +void +check_limbdata (void) +{ +#define M GMP_NUMB_MAX + + static const struct { + mp_exp_t exp; + mp_size_t size; + mp_limb_t d[10]; + unsigned long want; + + } data[] = { + + /* in the comments here, a "_" indicates a digit (ie. limb) position not + included in the d data, and therefore zero */ + + { 0, 0, { 0 }, 0L }, /* 0 */ + + { 1, 1, { 1 }, 1L }, /* 1 */ + { 1, -1, { 1 }, -1UL }, /* -1 */ + + { 0, 1, { 1 }, 0L }, /* .1 */ + { 0, -1, { 1 }, 0L }, /* -.1 */ + + { -1, 1, { 1 }, 0L }, /* ._1 */ + { -1, -1, { 1 }, 0L }, /* -._1 */ + + { -999, 1, { 1 }, 0L }, /* .___1 small */ + { MP_EXP_T_MIN, 1, { 1 }, 0L }, /* .____1 very small */ + + { 999, 1, { 1 }, 0L }, /* 1____. big */ + { MP_EXP_T_MAX, 1, { 1 }, 0L }, /* 1_____. very big */ + + { 1, 2, { 999, 2 }, 2L }, /* 2.9 */ + { 5, 8, { 7, 8, 9, 3, 0, 0, 0, 1 }, 3L }, /* 10003.987 */ + + { 2, 2, { M, M }, LONG_MAX }, /* FF. */ + { 2, 2, { M, M, M }, LONG_MAX }, /* FF.F */ + { 3, 3, { M, M, M }, LONG_MAX }, /* FFF. */ + +#if GMP_NUMB_BITS >= BITS_PER_ULONG + /* normal case, numb bigger than long */ + { 2, 1, { 1 }, 0L }, /* 1_. */ + { 2, 2, { 0, 1 }, 0L }, /* 10. */ + { 2, 2, { 999, 1 }, 999L }, /* 19. */ + { 3, 2, { 999, 1 }, 0L }, /* 19_. */ + +#else + /* nails case, numb smaller than long */ + { 2, 1, { 1 }, 1L << GMP_NUMB_BITS }, /* 1_. */ + { 3, 1, { 1 }, 0L }, /* 1__. */ + + { 2, 2, { 99, 1 }, 99L + (1L << GMP_NUMB_BITS) }, /* 19. */ + { 3, 2, { 1, 99 }, 1L << GMP_NUMB_BITS }, /* 91_. */ + { 3, 3, { 0, 1, 99 }, 1L << GMP_NUMB_BITS }, /* 910. */ + +#endif + }; + + mpf_t f; + unsigned long got; + int i; + mp_limb_t buf[20 + numberof(data[i].d)]; + + for (i = 0; i < numberof (data); i++) + { + refmpn_fill (buf, 10, CNST_LIMB(0xDEADBEEF)); + refmpn_copy (buf+10, data[i].d, ABS(data[i].size)); + refmpn_fill (buf+10+ABS(data[i].size), 10, CNST_LIMB(0xDEADBEEF)); + + PTR(f) = buf+10; + EXP(f) = data[i].exp; + SIZ(f) = data[i].size; + PREC(f) = numberof (data[i].d); + MPF_CHECK_FORMAT (f); + + got = mpf_get_si (f); + if (got != data[i].want) + { + printf ("mpf_get_si wrong at limb data[%d]\n", i); + mpf_trace (" f", f); + mpn_trace (" d", data[i].d, data[i].size); + printf (" size %ld\n", (long) data[i].size); + printf (" exp %ld\n", (long) data[i].exp); + printf (" got %lu (0x%lX)\n", got, got); + printf (" want %lu (0x%lX)\n", data[i].want, data[i].want); + abort(); + } + } +} + + +int +main (void) +{ + tests_start (); + + check_data (); + check_max (); + check_limbdata (); + + tests_end (); + exit (0); +} |