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Makes the custom random generator deterministic across platforms 

TIL that the generators are implemented according to spec but the
distributions are custom. Since this is C I think we can manage without
distributions.

This still needs a test.
This commit is contained in:
Linus Probert 2019-02-22 00:27:19 +01:00
parent cc375bba4e
commit 685bf97467
1 changed files with 3 additions and 3 deletions
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6
bh_random/src/bh_random.cpp
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@ -16,6 +16,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>. * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
#include <iostream>
#include <random> #include <random>
#include <climits> #include <climits>
extern "C" { extern "C" {
@ -24,7 +25,6 @@ extern "C" {
static std::mt19937 generator; static std::mt19937 generator;
static std::mt19937 map_generator; static std::mt19937 map_generator;
static std::uniform_int_distribution<int> distribution(0, INT_MAX);
extern "C" void extern "C" void
bh_srand(unsigned int seed) bh_srand(unsigned int seed)
@ -36,7 +36,7 @@ bh_srand(unsigned int seed)
extern "C" unsigned int extern "C" unsigned int
bh_rand(void) bh_rand(void)
{ {
return distribution(generator); return generator();
} }
extern "C" void extern "C" void
@ -49,5 +49,5 @@ bh_map_srand(unsigned int seed)
extern "C" unsigned int extern "C" unsigned int
bh_map_rand(void) bh_map_rand(void)
{ {
return distribution(map_generator); return map_generator();
} }