1 files changed, 103 insertions, 0 deletions
diff --git a/test/builtins/Unit/fixunstfti_test.c b/test/builtins/Unit/fixunstfti_test.c
new file mode 100644
index 0000000000000..60a0982b62663
--- /dev/null
+++ b/test/builtins/Unit/fixunstfti_test.c
@@ -0,0 +1,103 @@
+//===-- fixunstfti_test.c - Test __fixunstfti -----------------------------===//
+//
+//                     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 __fixunstfti for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+
+#if __LDBL_MANT_DIG__ == 113
+
+#include "fp_test.h"
+#include "int_lib.h"
+
+// Returns: convert a to a unsigned long long, rounding toward zero.
+//          Negative values all become zero.
+
+// Assumption: long double is a 128 bit floating point type
+//             tu_int is a 128 bit integral type
+//             value in long double is representable in tu_int or is negative 
+//                 (no range checking performed)
+
+COMPILER_RT_ABI tu_int __fixunstfti(long double a);
+
+int test__fixunstfti(long double a, tu_int expected)
+{
+    tu_int x = __fixunstfti(a);
+    if (x != expected)
+    {
+        twords xt;
+        xt.all = x;
+
+        twords expectedt;
+        expectedt.all = expected;
+
+        printf("error in __fixunstfti(%.20Lf) = 0x%.16llX%.16llX, "
+               "expected 0x%.16llX%.16llX\n",
+               a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
+    }
+    return x != expected;
+}
+
+char assumption_1[sizeof(tu_int) == 4*sizeof(su_int)] = {0};
+char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
+char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
+
+#endif
+
+int main()
+{
+#if __LDBL_MANT_DIG__ == 113
+    if (test__fixunstfti(makeInf128(), make_ti(0xffffffffffffffffLL,
+                                               0xffffffffffffffffLL)))
+        return 1;
+
+    if (test__fixunstfti(0.0, 0))
+        return 1;
+
+    if (test__fixunstfti(0.5, 0))
+        return 1;
+    if (test__fixunstfti(0.99, 0))
+        return 1;
+    if (test__fixunstfti(1.0, 1))
+        return 1;
+    if (test__fixunstfti(1.5, 1))
+        return 1;
+    if (test__fixunstfti(1.99, 1))
+        return 1;
+    if (test__fixunstfti(2.0, 2))
+        return 1;
+    if (test__fixunstfti(2.01, 2))
+        return 1;
+    if (test__fixunstfti(-0.01, 0))
+        return 1;
+    if (test__fixunstfti(-0.99, 0))
+        return 1;
+
+    if (test__fixunstfti(0x1.p+128, make_ti(0xffffffffffffffffLL,
+                                            0xffffffffffffffffLL)))
+        return 1;
+
+    if (test__fixunstfti(0x1.FFFFFEp+126, make_ti(0x7fffff8000000000LL, 0x0)))
+        return 1;
+    if (test__fixunstfti(0x1.FFFFFEp+127, make_ti(0xffffff0000000000LL, 0x0)))
+        return 1;
+    if (test__fixunstfti(0x1.FFFFFEp+128, make_ti(0xffffffffffffffffLL,
+                                                  0xffffffffffffffffLL)))
+        return 1;
+    if (test__fixunstfti(0x1.FFFFFEp+129, make_ti(0xffffffffffffffffLL,
+                                                  0xffffffffffffffffLL)))
+        return 1;
+
+#else
+    printf("skipped\n");
+#endif
+   return 0;
+}