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ext/gmp: Refactor gmp_random_range() to use new ZPP specifier

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Gina Peter Banyard 2024-11-02 23:19:20 +00:00
parent 3964efd729
commit 376c148fb8
1 changed files with 15 additions and 56 deletions
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51
ext/gmp/gmp.c
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@ -1751,68 +1751,27 @@ ZEND_FUNCTION(gmp_random_bits)
/* {{{ Gets a random number in the range min to max */ /* {{{ Gets a random number in the range min to max */
ZEND_FUNCTION(gmp_random_range) ZEND_FUNCTION(gmp_random_range)
{ {
zval *min_arg, *max_arg; mpz_ptr gmpnum_min, gmpnum_max, gmpnum_result;
mpz_ptr gmpnum_max, gmpnum_result;
mpz_t gmpnum_range;
gmp_temp_t temp_a, temp_b;
ZEND_PARSE_PARAMETERS_START(2, 2) ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_ZVAL(min_arg) GMP_Z_PARAM_INTO_MPZ_PTR(gmpnum_min)
Z_PARAM_ZVAL(max_arg) GMP_Z_PARAM_INTO_MPZ_PTR(gmpnum_max)
ZEND_PARSE_PARAMETERS_END(); ZEND_PARSE_PARAMETERS_END();
gmp_init_random(); gmp_init_random();
FETCH_GMP_ZVAL(gmpnum_max, max_arg, temp_a, 2);
if (Z_TYPE_P(min_arg) == IS_LONG && Z_LVAL_P(min_arg) >= 0) {
if (mpz_cmp_ui(gmpnum_max, Z_LVAL_P(min_arg)) <= 0) {
FREE_GMP_TEMP(temp_a);
zend_argument_value_error(1, "must be less than argument #2 ($maximum)");
RETURN_THROWS();
}
INIT_GMP_RETVAL(gmpnum_result);
mpz_init(gmpnum_range);
if (Z_LVAL_P(min_arg) != 0) {
mpz_sub_ui(gmpnum_range, gmpnum_max, Z_LVAL_P(min_arg) - 1);
} else {
mpz_add_ui(gmpnum_range, gmpnum_max, 1);
}
mpz_urandomm(gmpnum_result, GMPG(rand_state), gmpnum_range);
if (Z_LVAL_P(min_arg) != 0) {
mpz_add_ui(gmpnum_result, gmpnum_result, Z_LVAL_P(min_arg));
}
mpz_clear(gmpnum_range);
FREE_GMP_TEMP(temp_a);
} else {
mpz_ptr gmpnum_min;
FETCH_GMP_ZVAL_DEP(gmpnum_min, min_arg, temp_b, temp_a, 1);
if (mpz_cmp(gmpnum_max, gmpnum_min) <= 0) { if (mpz_cmp(gmpnum_max, gmpnum_min) <= 0) {
FREE_GMP_TEMP(temp_b);
FREE_GMP_TEMP(temp_a);
zend_argument_value_error(1, "must be less than argument #2 ($maximum)"); zend_argument_value_error(1, "must be less than argument #2 ($maximum)");
RETURN_THROWS(); RETURN_THROWS();
} }
INIT_GMP_RETVAL(gmpnum_result); INIT_GMP_RETVAL(gmpnum_result);
mpz_init(gmpnum_range);
/* Use available 3rd ZPP slot for range num to prevent allocation and freeing */
mpz_ptr gmpnum_range = GMPG(zpp_arg[2]);
mpz_sub(gmpnum_range, gmpnum_max, gmpnum_min); mpz_sub(gmpnum_range, gmpnum_max, gmpnum_min);
mpz_add_ui(gmpnum_range, gmpnum_range, 1); mpz_add_ui(gmpnum_range, gmpnum_range, 1);
mpz_urandomm(gmpnum_result, GMPG(rand_state), gmpnum_range); mpz_urandomm(gmpnum_result, GMPG(rand_state), gmpnum_range);
mpz_add(gmpnum_result, gmpnum_result, gmpnum_min); mpz_add(gmpnum_result, gmpnum_result, gmpnum_min);
mpz_clear(gmpnum_range);
FREE_GMP_TEMP(temp_b);
FREE_GMP_TEMP(temp_a);
}
} }
/* }}} */ /* }}} */