add memset test

3 files changed, 138 insertions, 0 deletions

diff --git a/tests/core/test_memset.c b/tests/core/test_memset.c
new file mode 100644
index 00000000..747765f2
--- /dev/null
+++ b/tests/core/test_memset.c
@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+#define TOTAL 10240
+
+#define TEST(size, type) { \
+  for (int i = 0; i < TOTAL; i++) { \
+    buffer[i] = i*seed; \
+  } \
+  memset(buffer+size%17, 0xA5, size); \
+  int v = 0; \
+  for (int i = 0; i < TOTAL; i++) { \
+    v += buffer[i]; \
+  } \
+  printf("final %d:%d\n", size, v); \
+}
+
+int main() {
+  #define RUN(type) \
+  { \
+    type buffer[TOTAL]; \
+    volatile int seed = 123; \
+    TEST(1, type); \
+    TEST(2, type); \
+    TEST(3, type); \
+    TEST(4, type); \
+    TEST(5, type); \
+    TEST(6, type); \
+    TEST(7, type); \
+    TEST(8, type); \
+    TEST(9, type); \
+    TEST(10, type); \
+    TEST(16, type); \
+    TEST(32, type); \
+    TEST(64, type); \
+    TEST(128, type); \
+    TEST(256, type); \
+    TEST(512, type); \
+    TEST(1024, type); \
+    for (int x = 10; x < 100; x += 10) { TEST(x, type) }; \
+  }
+  printf("8\n");
+  RUN(unsigned char);
+  printf("16\n");
+  RUN(unsigned short);
+  printf("32\n");
+  RUN(unsigned);
+  return 1;
+}
+
diff --git a/tests/core/test_memset.out b/tests/core/test_memset.out
new file mode 100644
index 00000000..7517e6ba
--- /dev/null
+++ b/tests/core/test_memset.out
@@ -0,0 +1,81 @@
+8
+final 1:1305642
+final 2:1305571
+final 3:1305643
+final 4:1305602
+final 5:1305704
+final 6:1305693
+final 7:1305825
+final 8:1305844
+final 9:1306006
+final 10:1306055
+final 16:1306280
+final 32:1307056
+final 64:1308384
+final 128:1310400
+final 256:1315200
+final 512:1324800
+final 1024:1344000
+final 10:1306055
+final 20:1306310
+final 30:1306867
+final 40:1307060
+final 50:1307463
+final 60:1307850
+final 70:1308037
+final 80:1308424
+final 90:1308805
+16
+final 1:332555306
+final 2:332597423
+final 3:332597229
+final 4:332638967
+final 5:332638793
+final 6:332679896
+final 7:332679486
+final 8:332720210
+final 9:332719820
+final 10:332759909
+final 16:332875316
+final 32:333189464
+final 64:333800048
+final 128:334950368
+final 256:336967616
+final 512:339333248
+final 1024:337924352
+final 10:332759909
+final 20:332970089
+final 30:333154439
+final 40:333365234
+final 50:333529289
+final 60:333740699
+final 70:333957644
+final 80:334096484
+final 90:334314044
+32
+final 1:-2141821910
+final 2:-2141779793
+final 3:-2130966476
+final 4:637274041
+final 5:637273857
+final 6:637315339
+final 7:648128533
+final 8:-878598369
+final 9:-878598523
+final 10:-878557932
+final 16:384620786
+final 32:-1383904756
+final 64:-625991496
+final 128:889823216
+final 256:-373561888
+final 512:1394178624
+final 1024:633133696
+final 10:-878557932
+final 20:-1131244490
+final 30:132010428
+final 40:-120673793
+final 50:1142572023
+final 60:889890139
+final 70:-2141802805
+final 80:1900447306
+final 90:-1131244285
diff --git a/tests/test_core.py b/tests/test_core.py
index 55aeb697..47360fd6 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -2594,6 +2594,12 @@ The current type of b is: 9
     src, output = (test_path + s for s in ('.c', '.out'))
     self.do_run_from_file(src, output)
 
+  def test_memset(self):
+    if Settings.USE_TYPED_ARRAYS != 2: return self.skip('need ta2')
+    test_path = path_from_root('tests', 'core', 'test_memset')
+    src, output = (test_path + s for s in ('.c', '.out'))
+    self.do_run_from_file(src, output)
+
   def test_getopt(self):
       if self.emcc_args is None: return self.skip('needs emcc for libc')