1 files changed, 114 insertions, 0 deletions
diff --git a/test/builtins/Unit/truncsfhf2_test.c b/test/builtins/Unit/truncsfhf2_test.c
new file mode 100644
index 000000000000..5bc3c8e22d59
--- /dev/null
+++ b/test/builtins/Unit/truncsfhf2_test.c
@@ -0,0 +1,114 @@
+//===--------------- truncsfhf2_test.c - Test __truncsfhf2 ----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __truncsfhf2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+
+#include "fp_test.h"
+
+uint16_t __truncsfhf2(float a);
+
+int test__truncsfhf2(float a, uint16_t expected)
+{
+    uint16_t x = __truncsfhf2(a);
+    int ret = compareResultH(x, expected);
+
+    if (ret){
+        printf("error in test__truncsfhf2(%f) = %#.4x, "
+               "expected %#.4x\n", a, x, fromRep16(expected));
+    }
+    return ret;
+}
+
+char assumption_1[sizeof(__fp16) * CHAR_BIT == 16] = {0};
+
+int main()
+{
+    // qNaN
+    if (test__truncsfhf2(makeQNaN32(),
+                         UINT16_C(0x7e00)))
+        return 1;
+    // NaN
+    if (test__truncsfhf2(makeNaN32(UINT32_C(0x8000)),
+                         UINT16_C(0x7e00)))
+        return 1;
+    // inf
+    if (test__truncsfhf2(makeInf32(),
+                         UINT16_C(0x7c00)))
+        return 1;
+    if (test__truncsfhf2(-makeInf32(),
+                         UINT16_C(0xfc00)))
+        return 1;
+    // zero
+    if (test__truncsfhf2(0.0f, UINT16_C(0x0)))
+        return 1;
+    if (test__truncsfhf2(-0.0f, UINT16_C(0x8000)))
+        return 1;
+
+    if (test__truncsfhf2(3.1415926535f,
+                         UINT16_C(0x4248)))
+        return 1;
+    if (test__truncsfhf2(-3.1415926535f,
+                         UINT16_C(0xc248)))
+        return 1;
+    if (test__truncsfhf2(0x1.987124876876324p+100f,
+                         UINT16_C(0x7c00)))
+        return 1;
+    if (test__truncsfhf2(0x1.987124876876324p+12f,
+                         UINT16_C(0x6e62)))
+        return 1;
+    if (test__truncsfhf2(0x1.0p+0f,
+                         UINT16_C(0x3c00)))
+        return 1;
+    if (test__truncsfhf2(0x1.0p-14f,
+                         UINT16_C(0x0400)))
+        return 1;
+    // denormal
+    if (test__truncsfhf2(0x1.0p-20f,
+                         UINT16_C(0x0010)))
+        return 1;
+    if (test__truncsfhf2(0x1.0p-24f,
+                         UINT16_C(0x0001)))
+        return 1;
+    if (test__truncsfhf2(-0x1.0p-24f,
+                         UINT16_C(0x8001)))
+        return 1;
+    if (test__truncsfhf2(0x1.5p-25f,
+                         UINT16_C(0x0001)))
+        return 1;
+    // and back to zero
+    if (test__truncsfhf2(0x1.0p-25f,
+                         UINT16_C(0x0000)))
+        return 1;
+    if (test__truncsfhf2(-0x1.0p-25f,
+                         UINT16_C(0x8000)))
+        return 1;
+    // max (precise)
+    if (test__truncsfhf2(65504.0f,
+                         UINT16_C(0x7bff)))
+        return 1;
+    // max (rounded)
+    if (test__truncsfhf2(65519.0f,
+                         UINT16_C(0x7bff)))
+        return 1;
+    // max (to +inf)
+    if (test__truncsfhf2(65520.0f,
+                         UINT16_C(0x7c00)))
+        return 1;
+    if (test__truncsfhf2(65536.0f,
+                         UINT16_C(0x7c00)))
+        return 1;
+    if (test__truncsfhf2(-65520.0f,
+                         UINT16_C(0xfc00)))
+        return 1;
+    return 0;
+}