64 lines
2.3 KiB
Plaintext
64 lines
2.3 KiB
Plaintext
/*=============================================================================
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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) 2010 Sebastian Pancratz
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******************************************************************************/
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*******************************************************************************
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Properties
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*******************************************************************************
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size_t z_sizeinbase(slong n, int b)
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Returns the number of digits in the base $b$ representation
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of the absolute value of the integer $n$.
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Assumes that $b \geq 2$.
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*******************************************************************************
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Random functions
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*******************************************************************************
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mp_limb_signed_t z_randtest(flint_rand_t state)
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Returns a pseudo random number with a random number of bits, from
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$0$ to \code{FLINT_BITS}. The probability of the special values $0$,
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$\pm 1$, \code{COEFF_MAX}, \code{COEFF_MIN}, \code{WORD_MAX} and
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\code{WORD_MIN} is increased.
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This random function is mainly used for testing purposes.
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mp_limb_signed_t z_randtest_not_zero(flint_rand_t state)
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As for \code{z_randtest(state)}, but does not return $0$.
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mp_limb_t z_randint(flint_rand_t state, mp_limb_t limit)
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Returns a pseudo random number of absolute value less than
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\code{limit}. If \code{limit} is zero or exceeds \code{WORD_MAX},
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it is interpreted as \code{WORD_MAX}.
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