/**
* clay_util_relation_negate_row function:
* Negate the line at `row' (doesn't affect the e/i column)
* \param[in,out] statement
* \param[in] row row to negate
*/
void clay_util_relation_negate_row(osl_relation_p r, int row) {
int i;
int precision = r->precision;
for (i = 1 ; i < r->nb_columns ; i++) {
osl_int_oppose(precision,
&r->m[row][i],
r->m[row][i]);
}
osl_int_decrement(precision,
&r->m[row][r->nb_columns-1],
r->m[row][r->nb_columns-1]);
}
/*
* Converts a PIP quast to a union of polyhedra
*/
osl_relation_p pip_quast_to_polyhedra(PipQuast *quast, int nvar, int npar) {
// originaly used for lastwriter
// july 5th 2012 : extracted from dependence.c
osl_relation_p ep;
osl_relation_p tp;
osl_relation_p qp;
osl_relation_p iter;
int precision;
int j;
if (quast == NULL)
return NULL;
#if defined(CANDL_LINEAR_VALUE_IS_INT)
precision = OSL_PRECISION_SP;
#elif defined(CANDL_LINEAR_VALUE_IS_LONGLONG)
precision = OSL_PRECISION_DP;
#elif defined(CANDL_LINEAR_VALUE_IS_MP)
precision = OSL_PRECISION_MP;
#endif
if (quast->condition != NULL) {
tp = pip_quast_to_polyhedra(quast->next_then, nvar, npar);
ep = pip_quast_to_polyhedra(quast->next_else, nvar, npar);
/* Each of the matrices in the then tree needs to be augmented with
* the condition */
for (iter = tp ; iter != NULL ; iter = iter->next) {
int nrows = iter->nb_rows;
osl_int_set_si(precision, &iter->m[nrows][0], 1);
for (j = 1; j < 1 + nvar; j++)
osl_int_set_si(precision, &iter->m[nrows][j], 0);
for (j = 0; j < npar + 1; j++)
osl_int_set_si(precision, &iter->m[nrows][1 + nvar + j],
CANDL_get_si(quast->condition->the_vector[j]));
(iter->nb_rows)++;
}
/* JP : july 5th 2012:
* Fix negation of a constraint in adding -1 to the constant
*/
for (iter = ep; iter != NULL ; iter = iter->next) {
int nrows = iter->nb_rows;
/* Inequality */
osl_int_set_si(precision, &iter->m[nrows][0], 5);
for (j = 1; j < 1 + nvar; j++)
osl_int_set_si(precision, &iter->m[nrows][j], 0);
for (j = 0; j < npar + 1; j++)
osl_int_set_si(precision, &iter->m[nrows][1 + nvar + j],
-CANDL_get_si(quast->condition->the_vector[j]));
osl_int_decrement(precision,
&iter->m[nrows][iter->nb_columns - 1],
iter->m[nrows][iter->nb_columns - 1]);
(iter->nb_rows)++;
}
/* union of tp and ep */
if (tp) {
qp = tp;
for (iter = tp ; iter->next != NULL ; iter = iter->next)
;
iter->next = ep;
} else {
qp = ep;
}
return qp;
} else {
/* quast condition is NULL */
osl_relation_p lwmatrix = osl_relation_pmalloc(precision, nvar+npar+1,
nvar+npar+2);
PipList *vecList = quast->list;
int count=0;
while (vecList != NULL) {
/* Equality */
osl_int_set_si(precision, &lwmatrix->m[count][0], 0);
for (j=0; j < nvar; j++)
if (j == count)
osl_int_set_si(precision, &lwmatrix->m[count][j + 1], 1);
else
osl_int_set_si(precision, &lwmatrix->m[count][j + 1], 0);
for (j=0; j < npar; j++)
osl_int_set_si(precision, &lwmatrix->m[count][j + 1 + nvar],
-CANDL_get_si(vecList->vector->the_vector[j]));
/* Constant portion */
if (quast->newparm != NULL)
/* Don't handle newparm for now */
osl_int_set_si(precision, &lwmatrix->m[count][npar + 1 + nvar],
-CANDL_get_si(vecList->vector->the_vector[npar+1]));
else
osl_int_set_si(precision, &lwmatrix->m[count][npar + 1 + nvar],
-CANDL_get_si(vecList->vector->the_vector[npar]));
count++;
vecList = vecList->next;
}
lwmatrix->nb_rows = count;
lwmatrix->nb_parameters = npar;
return lwmatrix;
}
}
int main(int argc, char** argv)
{
if (argc > 1) { printf("argv are ignored\n"); }
unsigned int nb_fail = 0;
#ifdef OSL_GMP_IS_HERE
int i;
for (i = SCHAR_MIN; i <= SCHAR_MAX; ++i) {
osl_int_t a_sp; osl_int_init_set_si(OSL_PRECISION_SP, &a_sp, i);
osl_int_t a_dp; osl_int_init_set_si(OSL_PRECISION_DP, &a_dp, i);
osl_int_t a_mp; osl_int_init_set_si(OSL_PRECISION_MP, &a_mp, i);
int j;
for (j = SCHAR_MIN; j <= SCHAR_MAX; ++j) {
int error = 0;
osl_int_t b_sp; osl_int_init_set_si(OSL_PRECISION_SP, &b_sp, j);
osl_int_t b_dp; osl_int_init_set_si(OSL_PRECISION_DP, &b_dp, j);
osl_int_t b_mp; osl_int_init_set_si(OSL_PRECISION_MP, &b_mp, j);
osl_int_t c_sp; osl_int_init(OSL_PRECISION_SP, &c_sp);
osl_int_t c_dp; osl_int_init(OSL_PRECISION_DP, &c_dp);
osl_int_t c_mp; osl_int_init(OSL_PRECISION_MP, &c_mp);
int const a_sp_i = osl_int_get_si(OSL_PRECISION_SP, a_sp);
int const a_dp_i = osl_int_get_si(OSL_PRECISION_DP, a_dp);
int const a_mp_i = osl_int_get_si(OSL_PRECISION_MP, a_mp);
int const b_sp_i = osl_int_get_si(OSL_PRECISION_SP, b_sp);
int const b_dp_i = osl_int_get_si(OSL_PRECISION_DP, b_dp);
int const b_mp_i = osl_int_get_si(OSL_PRECISION_MP, b_mp);
// osl_int_init_set_si & osl_int_init & osl_int_get_si
if (!error) {
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (a_sp_i != a_dp_i || a_sp_i != a_mp_i) {
error++; printf("Error osl_int_init_set_si or osl_int_get_si\n");
}
if (b_sp_i != b_dp_i || b_sp_i != b_mp_i) {
error++; printf("Error osl_int_init_set_si or osl_int_get_si\n");
}
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != 0) {
error++; printf("Error osl_int_init or osl_int_get_si\n");
}
}
// osl_int_assign
if (!error) {
osl_int_assign(OSL_PRECISION_SP, &c_sp, b_sp);
osl_int_assign(OSL_PRECISION_DP, &c_dp, b_dp);
osl_int_assign(OSL_PRECISION_MP, &c_mp, b_mp);
if (osl_int_ne(OSL_PRECISION_SP, c_sp, b_sp)) {
error++; printf("Error osl_int_assign\n");
}
if (osl_int_ne(OSL_PRECISION_DP, c_dp, b_dp)) {
error++; printf("Error osl_int_assign\n");
}
if (osl_int_ne(OSL_PRECISION_MP, c_mp, b_mp)) {
error++; printf("Error osl_int_assign\n");
}
}
// osl_int_swap
// osl_int_increment
if (!error) {
osl_int_increment(OSL_PRECISION_SP, &c_sp, a_sp);
osl_int_increment(OSL_PRECISION_DP, &c_dp, a_dp);
osl_int_increment(OSL_PRECISION_MP, &c_mp, a_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != a_sp_i + 1) {
error++; printf("Error osl_int_increment\n");
}
}
// osl_int_decrement
if (!error) {
osl_int_decrement(OSL_PRECISION_SP, &c_sp, a_sp);
osl_int_decrement(OSL_PRECISION_DP, &c_dp, a_dp);
osl_int_decrement(OSL_PRECISION_MP, &c_mp, a_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != a_sp_i - 1) {
error++; printf("Error osl_int_decrement\n");
}
}
// osl_int_add
if (!error) {
osl_int_add(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_add(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_add(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != a_sp_i + b_sp_i) {
error++; printf("Error osl_int_add\n");
}
}
// osl_int_add_si
// osl_int_sub
if (!error) {
osl_int_sub(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_sub(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_sub(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != a_sp_i - b_sp_i) {
error++; printf("Error osl_int_add\n");
}
}
// osl_int_mul
if (!error) {
osl_int_mul(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_mul(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_mul(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != a_sp_i * b_sp_i) {
error++; printf("Error osl_int_mul\n");
}
}
// osl_int_mul_si
if (!error) {
osl_int_mul_si(OSL_PRECISION_SP, &c_sp, a_sp, b_sp_i);
osl_int_mul_si(OSL_PRECISION_DP, &c_dp, a_dp, b_dp_i);
osl_int_mul_si(OSL_PRECISION_MP, &c_mp, a_mp, b_mp_i);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != a_sp_i * b_sp_i) {
error++; printf("Error osl_int_mul_si\n");
}
}
// osl_int_div_exact
if (!error && b_sp_i != 0 && a_sp_i % b_sp_i == 0) {
osl_int_div_exact(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_div_exact(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_div_exact(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i || c_sp_i != a_sp_i / b_sp_i) {
error++; printf("Error osl_int_div_exact\n");
}
}
// osl_int_floor_div_q
if (!error && b_sp_i != 0) {
osl_int_floor_div_q(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_floor_div_q(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_floor_div_q(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i) {
error++; printf("Error osl_int_floor_div_q\n");
}
}
// osl_int_floor_div_r
if (!error && b_sp_i != 0) {
osl_int_floor_div_r(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_floor_div_r(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_floor_div_r(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i) {
error++; printf("Error osl_int_floor_div_r\n");
}
}
// osl_int_floor_div_q_r
if (!error && b_sp_i != 0) {
osl_int_t q_sp; osl_int_init(OSL_PRECISION_SP, &q_sp);
osl_int_t q_dp; osl_int_init(OSL_PRECISION_DP, &q_dp);
osl_int_t q_mp; osl_int_init(OSL_PRECISION_MP, &q_mp);
osl_int_t r_sp; osl_int_init(OSL_PRECISION_SP, &r_sp);
osl_int_t r_dp; osl_int_init(OSL_PRECISION_DP, &r_dp);
osl_int_t r_mp; osl_int_init(OSL_PRECISION_MP, &r_mp);
osl_int_floor_div_q_r(OSL_PRECISION_SP, &q_sp, &r_sp, a_sp, b_sp);
osl_int_floor_div_q_r(OSL_PRECISION_DP, &q_dp, &r_dp, a_dp, b_dp);
osl_int_floor_div_q_r(OSL_PRECISION_MP, &q_mp, &r_mp, a_mp, b_mp);
int q_sp_i = osl_int_get_si(OSL_PRECISION_SP, q_sp);
int q_dp_i = osl_int_get_si(OSL_PRECISION_DP, q_dp);
int q_mp_i = osl_int_get_si(OSL_PRECISION_MP, q_mp);
int r_sp_i = osl_int_get_si(OSL_PRECISION_SP, r_sp);
int r_dp_i = osl_int_get_si(OSL_PRECISION_DP, r_dp);
int r_mp_i = osl_int_get_si(OSL_PRECISION_MP, r_mp);
if (q_sp_i != q_dp_i || q_sp_i != q_mp_i) {
error++; printf("Error osl_int_floor_div_q_r\n");
}
if (r_sp_i != r_dp_i || r_sp_i != r_mp_i) {
error++; printf("Error osl_int_floor_div_q_r\n");
}
}
// osl_int_mod
if (!error && b_sp_i != 0) {
osl_int_mod(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_mod(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_mod(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i) {
error++; printf("Error osl_int_mod\n");
}
}
// osl_int_gcd
if (!error) {
osl_int_gcd(OSL_PRECISION_SP, &c_sp, a_sp, b_sp);
osl_int_gcd(OSL_PRECISION_DP, &c_dp, a_dp, b_dp);
osl_int_gcd(OSL_PRECISION_MP, &c_mp, a_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i) {
error++; printf("Error osl_int_gcd\n");
}
}
// osl_int_oppose
if (!error) {
osl_int_oppose(OSL_PRECISION_SP, &c_sp, b_sp);
osl_int_oppose(OSL_PRECISION_DP, &c_dp, b_dp);
osl_int_oppose(OSL_PRECISION_MP, &c_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i) {
error++; printf("Error osl_int_oppose\n");
}
}
// osl_int_abs
if (!error) {
osl_int_abs(OSL_PRECISION_SP, &c_sp, b_sp);
osl_int_abs(OSL_PRECISION_DP, &c_dp, b_dp);
osl_int_abs(OSL_PRECISION_MP, &c_mp, b_mp);
int c_sp_i = osl_int_get_si(OSL_PRECISION_SP, c_sp);
int c_dp_i = osl_int_get_si(OSL_PRECISION_DP, c_dp);
int c_mp_i = osl_int_get_si(OSL_PRECISION_MP, c_mp);
if (c_sp_i != c_dp_i || c_sp_i != c_mp_i) {
error++; printf("Error osl_int_abs\n");
}
}
// osl_int_size_in_base_2
if (!error) {
size_t r_sp = osl_int_size_in_base_2(OSL_PRECISION_SP, b_sp);
size_t r_dp = osl_int_size_in_base_2(OSL_PRECISION_DP, b_dp);
size_t r_mp = osl_int_size_in_base_2(OSL_PRECISION_MP, b_mp);
osl_int_set_si(OSL_PRECISION_SP, &c_sp, r_sp);
osl_int_set_si(OSL_PRECISION_DP, &c_dp, r_dp);
osl_int_set_si(OSL_PRECISION_MP, &c_mp, r_mp);
if (r_sp != r_dp || r_sp != r_mp) {
error++; printf("Error osl_int_size_in_base_2\n");
}
}
// osl_int_size_in_base_10
// if (!error) {
// size_t r_sp = osl_int_size_in_base_10(OSL_PRECISION_SP, b_sp);
// size_t r_dp = osl_int_size_in_base_10(OSL_PRECISION_DP, b_dp);
// size_t r_mp = osl_int_size_in_base_10(OSL_PRECISION_MP, b_mp);
//
// osl_int_set_si(OSL_PRECISION_SP, &c_sp, r_sp);
// osl_int_set_si(OSL_PRECISION_DP, &c_dp, r_dp);
// osl_int_set_si(OSL_PRECISION_MP, &c_mp, r_mp);
//
// if (r_sp != r_dp || r_sp != r_mp)
// { error++; printf("Error osl_int_size_in_base_10\n"); }
// }
// osl_int_eq
// osl_int_ne
// osl_int_pos
// osl_int_neg
// osl_int_zero
// osl_int_one
// osl_int_mone
// osl_int_divisible
if (error) {
printf("Error with:\n");
printf("\n");
printf("a_sp = "); osl_int_print(stdout, OSL_PRECISION_SP, a_sp);
printf("\n");
printf("a_dp = "); osl_int_print(stdout, OSL_PRECISION_DP, a_dp);
printf("\n");
printf("a_mp = "); osl_int_print(stdout, OSL_PRECISION_MP, a_mp);
printf("\n");
printf("\n");
printf("b_sp = "); osl_int_print(stdout, OSL_PRECISION_SP, b_sp);
printf("\n");
printf("b_dp = "); osl_int_print(stdout, OSL_PRECISION_DP, b_dp);
printf("\n");
printf("b_mp = "); osl_int_print(stdout, OSL_PRECISION_MP, b_mp);
printf("\n");
printf("\n");
printf("c_sp = "); osl_int_print(stdout, OSL_PRECISION_SP, c_sp);
printf("\n");
printf("c_dp = "); osl_int_print(stdout, OSL_PRECISION_DP, c_dp);
printf("\n");
printf("c_mp = "); osl_int_print(stdout, OSL_PRECISION_MP, c_mp);
printf("\n");
printf("\n");
nb_fail += error;
}
}
}
printf("%s ", argv[0]);
printf("fails = %d\n", nb_fail);
#else
printf("%s ", argv[0]);
printf("works only with GMP\n");
#endif
return nb_fail;
}
/*
* Converts all conditions where the path does not lead to a solution
* The return is a upip_quast_to_polyhedranion of polyhedra
* extracted from pip_quast_to_polyhedra
*/
osl_relation_p pip_quast_no_solution_to_polyhedra(PipQuast *quast, int nvar,
int npar) {
osl_relation_p ep;
osl_relation_p tp;
osl_relation_p qp;
osl_relation_p iter;
int precision;
int j;
if (quast == NULL)
return NULL;
#if defined(CANDL_LINEAR_VALUE_IS_INT)
precision = OSL_PRECISION_SP;
#elif defined(CANDL_LINEAR_VALUE_IS_LONGLONG)
precision = OSL_PRECISION_DP;
#elif defined(CANDL_LINEAR_VALUE_IS_MP)
precision = OSL_PRECISION_MP;
#endif
if (quast->condition != NULL) {
tp = pip_quast_no_solution_to_polyhedra(quast->next_then, nvar, npar);
ep = pip_quast_no_solution_to_polyhedra(quast->next_else, nvar, npar);
/* Each of the matrices in the then tree needs to be augmented with
* the condition */
for (iter = tp ; iter != NULL ; iter = iter->next) {
int nrows = iter->nb_rows;
osl_int_set_si(precision, &iter->m[nrows][0], 1);
for (j = 1; j < 1 + nvar; j++)
osl_int_set_si(precision, &iter->m[nrows][j], 0);
for (j = 0; j < npar + 1; j++)
osl_int_set_si(precision, &iter->m[nrows][1 + nvar + j],
CANDL_get_si(quast->condition->the_vector[j]));
(iter->nb_rows)++;
}
for (iter = ep; iter != NULL ; iter = iter->next) {
int nrows = iter->nb_rows;
/* Inequality */
osl_int_set_si(precision, &iter->m[nrows][0], 1);
for (j = 1; j < 1 + nvar; j++)
osl_int_set_si(precision, &iter->m[nrows][j], 0);
for (j = 0; j < npar + 1; j++)
osl_int_set_si(precision, &iter->m[nrows][1 + nvar + j],
-CANDL_get_si(quast->condition->the_vector[j]));
osl_int_decrement(precision,
&iter->m[nrows][iter->nb_columns - 1],
iter->m[nrows][iter->nb_columns - 1]);
(iter->nb_rows)++;
}
/* union of tp and ep */
if (tp) {
qp = tp;
for (iter = tp ; iter->next != NULL ; iter = iter->next)
;
iter->next = ep;
} else {
qp = ep;
}
return qp;
}
if (quast->list != NULL)
return NULL;
/* quast condition is NULL */
osl_relation_p lwmatrix = osl_relation_pmalloc(precision, nvar+npar+1,
nvar+npar+2);
lwmatrix->nb_rows = 0;
lwmatrix->nb_parameters = npar;
return lwmatrix;
}
