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/*
* bmcmp.c
*
* This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
* project.
*
* Copyright (C) 1998-2024 OpenLink Software
*
* This project 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; only version 2 of the License, dated June 1991.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#define DC_INT(dc, sets, set) ((int64*)dc->dc_values)[sets[set]]
#define DC_ANY(dc, sets, set) ((db_buf_t*)dc->dc_values)[sets[set]]
caddr_t
bif_bm_cmp (caddr_t * qst, caddr_t * err_ret, state_slot_t ** args)
{
sqlr_new_error ("42000", "BMCMPV", "bm_cmp is only for vectored contexts");
return NULL;
}
double
bm_cmp (int64 x1, int64 y1, int64 x2, int64 y2, db_buf_t bm1, int l1, db_buf_t bm2, int l2)
{
int total_len = l1 + l2, min_len, inx, ones = 0;
min_len = MIN (l1, l2);
for (inx = 0; inx < min_len; inx++)
{
ones += byte_logcount[bm1[inx] & bm2[inx]];
}
return (double) ones / total_len;
}
int *
dc_sets (caddr_t * inst, state_slot_t * ssl, data_col_t ** dc_ret, dtp_t dtp, data_col_t * tmp_dc)
{
int *sets;
data_col_t *dc;
QNCAST (QI, qi, inst);
dc = *dc_ret = QST_BOX (data_col_t *, inst, ssl->ssl_index);
if (dtp != (*dc_ret)->dc_sqt.sqt_dtp && !(DV_ANY == dtp && (DCT_BOXES & dc->dc_type)))
sqlr_new_error ("42000", "BMCAR", "Wrong type argument %s, expected %s", dv_type_title (dc->dc_sqt.sqt_dtp),
dv_type_title (dtp));
sets = (int *) dc_alloc (tmp_dc, sizeof (int) * qi->qi_n_sets);
if (SSL_VEC == ssl->ssl_type)
int_asc_fill (sets, qi->qi_n_sets, 0);
else if (SSL_REF == ssl->ssl_type)
sslr_n_consec_ref (inst, (state_slot_ref_t *) ssl, sets, 0, qi->qi_n_sets);
else
sqlr_new_error ("42000", "BMCVC", "bm_cmp expects vector arguments");
return sets;
}
db_buf_t
dc_string (caddr_t * qst, data_col_t * dc, int *sets, int set, int *len_ret, caddr_t * to_free_ret)
{
*to_free_ret = NULL;
if ((DCT_BOXES & dc->dc_type))
{
caddr_t box = ((caddr_t *) dc->dc_values)[sets[set]];
dtp_t dtp = DV_TYPE_OF (box);
switch (dtp)
{
case DV_STRING:
*len_ret = box_length (box) - 1;
return (db_buf_t) box;
case DV_BIN:
*len_ret = box_length (box) - 1;
return (db_buf_t) box;
case DV_BLOB_HANDLE:
*to_free_ret = blob_to_string (((QI *) qst)->qi_trx, box);
*len_ret = box_length (*to_free_ret) - (DV_STRINGP (*to_free_ret) ? 1 : 0);
return (db_buf_t) * to_free_ret;
default:
sqlr_new_error ("42000", "", "expected string or binary arg, got %s", dv_type_title (dtp));
}
}
else if (DV_ANY == dc->dc_sqt.sqt_dtp)
{
db_buf_t dv = ((db_buf_t *) dc->dc_values)[sets[set]];
switch (*dv)
{
case DV_SHORT_STRING_SERIAL:
case DV_BIN:
*len_ret = dv[1];
return dv + 2;
case DV_STRING:
case DV_LONG_BIN:
*len_ret = LONG_REF_NA (dv + 1);
return dv + 5;
default:
sqlr_new_error ("42000", "", "Expected string or binary arg, got %s", dv_type_title (*dv));
}
}
else
sqlr_new_error ("42000", "", "Expected vector of boxes or anies, got %s", dv_type_title (dc->dc_sqt.sqt_dtp));
return NULL;
}
void
bif_bm_cmp_vec (caddr_t * qst, caddr_t * err_ret, state_slot_t ** args, state_slot_t * ret)
{
QNCAST (QI, qi, qst);
int first_set = 0, set, n_sets = qi->qi_n_sets;
data_col_t *x1_dc, *x2_dc, *y1_dc, *y2_dc, *bm1_dc, *bm2_dc;
int *x1_sets, *x2_sets, *y1_sets, *y2_sets, *bm1_sets, *bm2_sets;
data_col_t *ret_dc = QST_BOX (data_col_t *, qst, ret->ssl_index);
db_buf_t set_mask = qi->qi_set_mask;
if (BOX_ELEMENTS (args) < 6)
sqlr_new_error ("BMVAR", "BMVAR", "Too few arguments for bm_cmp");
x1_sets = dc_sets (qst, args[0], &x1_dc, DV_LONG_INT, ret_dc);
y1_sets = dc_sets (qst, args[1], &y1_dc, DV_LONG_INT, ret_dc);
x2_sets = dc_sets (qst, args[2], &x2_dc, DV_LONG_INT, ret_dc);
y2_sets = dc_sets (qst, args[3], &y2_dc, DV_LONG_INT, ret_dc);
bm1_sets = dc_sets (qst, args[4], &bm1_dc, DV_ANY, ret_dc);
bm2_sets = dc_sets (qst, args[5], &bm2_dc, DV_ANY, ret_dc);
DC_CHECK_LEN (ret_dc, n_sets - 1);
dc_reset (ret_dc);
SET_LOOP
{
double score;
int l1, l2;
caddr_t tmp1, tmp2;
db_buf_t bits1 = dc_string (qst, bm1_dc, bm1_sets, set, &l1, &tmp1);
db_buf_t bits2 = dc_string (qst, bm2_dc, bm2_sets, set, &l2, &tmp2);
score = bm_cmp (DC_INT (x1_dc, x1_sets, set), DC_INT (y1_dc, y1_sets, set),
DC_INT (x2_dc, x2_sets, set), DC_INT (y2_dc, y2_sets, set), bits1, l1, bits2, l2);
((double *) ret_dc->dc_values)[set] = score;
ret_dc->dc_n_values = set + 1;
if (tmp1)
dk_free_box (tmp1);
if (tmp2)
dk_free_box (tmp2);
}
END_SET_LOOP;
dc_reset_alloc (ret_dc);
}
void
bm_cmp_init ()
{
bif_define_typed ("bm_cmp", bif_bm_cmp, &bt_double);
bif_set_vectored (bif_bm_cmp, bif_bm_cmp_vec);
}
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