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Avoid scm_i_mkbig outside numbers.c.

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* libguile/random.c (scm_c_random_bignum):
* libguile/socket.c (scm_from_ipv6): Avoid scm_i_mkbig.
* libguile/numbers.h:
* libguile/numbers.c (scm_i_mkbig): Remove.
This commit is contained in:
Andy Wingo 2022-01-07 11:45:38 +01:00
parent 0c502a4d3c
commit bdddef3cfd
4 changed files with 21 additions and 22 deletions
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22
libguile/random.c
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@ -1,4 +1,4 @@
/* Copyright 1999-2001,2003,2005-2006,2009-2010,2012-2014,2017-2019
/* Copyright 1999-2001,2003,2005-2006,2009-2010,2012-2014,2017-2019,2022
Free Software Foundation, Inc.
This file is part of Guile.
@ -311,8 +311,11 @@ scm_c_random64 (scm_t_rstate *state, uint64_t m)
SCM
scm_c_random_bignum (scm_t_rstate *state, SCM m)
{
SCM result = scm_i_mkbig ();
const size_t m_bits = mpz_sizeinbase (SCM_I_BIG_MPZ (m), 2);
mpz_t result, zm;
mpz_init (result);
mpz_init (zm);
scm_to_mpz (m, zm);
const size_t m_bits = mpz_sizeinbase (zm, 2);
/* how many bits would only partially fill the last uint32_t? */
const size_t end_bits = m_bits % (sizeof (uint32_t) * SCM_CHAR_BIT);
uint32_t *random_chunks = NULL;
@ -321,7 +324,7 @@ scm_c_random_bignum (scm_t_rstate *state, SCM m)
const uint32_t num_chunks = num_full_chunks + ((end_bits) ? 1 : 0);
/* we know the result will be this big */
mpz_realloc2 (SCM_I_BIG_MPZ (result), m_bits);
mpz_realloc2 (result, m_bits);
random_chunks =
(uint32_t *) scm_gc_calloc (num_chunks * sizeof (uint32_t),
@ -332,7 +335,7 @@ scm_c_random_bignum (scm_t_rstate *state, SCM m)
uint32_t *current_chunk = random_chunks + (num_chunks - 1);
uint32_t chunks_left = num_chunks;
mpz_set_ui (SCM_I_BIG_MPZ (result), 0);
mpz_set_ui (result, 0);
if (end_bits)
{
@ -352,7 +355,7 @@ scm_c_random_bignum (scm_t_rstate *state, SCM m)
*current_chunk-- = state->rng->random_bits (state);
chunks_left--;
}
mpz_import (SCM_I_BIG_MPZ (result),
mpz_import (result,
num_chunks,
-1,
sizeof (uint32_t),
@ -361,11 +364,14 @@ scm_c_random_bignum (scm_t_rstate *state, SCM m)
random_chunks);
/* if result >= m, regenerate it (it is important to regenerate
all bits in order not to get a distorted distribution) */
} while (mpz_cmp (SCM_I_BIG_MPZ (result), SCM_I_BIG_MPZ (m)) >= 0);
} while (mpz_cmp (result, zm) >= 0);
scm_gc_free (random_chunks,
num_chunks * sizeof (uint32_t),
"random bignum chunks");
return scm_i_normbig (result);
mpz_clear (zm);
SCM ret = scm_from_mpz (result);
mpz_clear (result);
return ret;
}
/*