From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Sat, 18 Nov 2023 06:11:09 -0600 Subject: Initial commit. --- gmp-6.3.0/tests/mpz/t-sizeinbase.c | 89 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 gmp-6.3.0/tests/mpz/t-sizeinbase.c (limited to 'gmp-6.3.0/tests/mpz/t-sizeinbase.c') diff --git a/gmp-6.3.0/tests/mpz/t-sizeinbase.c b/gmp-6.3.0/tests/mpz/t-sizeinbase.c new file mode 100644 index 0000000..936f2bd --- /dev/null +++ b/gmp-6.3.0/tests/mpz/t-sizeinbase.c @@ -0,0 +1,89 @@ +/* Test mpz_sizeinbase. + +Copyright 2001, 2002 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 +#include +#include "gmp-impl.h" +#include "tests.h" + + +#if 0 + /* Disabled due to the bogosity of trying to fake an _mp_d pointer to + below an object. Has been seen to fail on a hppa system and on ia64. */ + + +/* Create a fake mpz consisting of just a single 1 bit, with totbits being + the total number of bits, inclusive of that 1 bit. */ +void +mpz_fake_bits (mpz_ptr z, unsigned long totbits) +{ + static mp_limb_t n; + unsigned long zero_bits, zero_limbs; + + zero_bits = totbits - 1; + zero_limbs = zero_bits / GMP_NUMB_BITS; + zero_bits %= GMP_NUMB_BITS; + + SIZ(z) = zero_limbs + 1; + PTR(z) = (&n) - (SIZ(z) - 1); + n = CNST_LIMB(1) << zero_bits; + + ASSERT_ALWAYS (mpz_sizeinbase (z, 2) == totbits); +} + + +/* This was seen to fail on a GNU/Linux powerpc32 with gcc 2.95.2, + apparently due to a doubtful value of mp_bases[10].chars_per_bit_exactly + (0X1.34413509F79FDP-2 whereas 0X1.34413509F79FFP-2 is believed correct). + Presumably this is a glibc problem when gcc converts the decimal string + in mp_bases.c, or maybe it's only a function of the rounding mode during + compilation. */ +void +check_sample (void) +{ + unsigned long totbits = 198096465; + int base = 10; + size_t want = 59632979; + size_t got; + mpz_t z; + + mpz_fake_bits (z, totbits); + got = mpz_sizeinbase (z, base); + if (got != want) + { + printf ("mpz_sizeinbase\n"); + printf (" base %d\n", base); + printf (" totbits %lu\n", totbits); + printf (" got %u\n", got); + printf (" want %u\n", want); + abort (); + } +} +#endif + +int +main (void) +{ + tests_start (); + + /* check_sample (); */ + + tests_end (); + exit (0); +} -- cgit v1.2.3