1 files changed, 123 insertions, 0 deletions
diff --git a/test/builtins/Unit/fixdfti_test.c b/test/builtins/Unit/fixdfti_test.c
new file mode 100644
index 000000000000..bfa88fd70e14
--- /dev/null
+++ b/test/builtins/Unit/fixdfti_test.c
@@ -0,0 +1,123 @@
+//===-- fixdfti_test.c - Test __fixdfti -----------------------------------===//
+//
+//                     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 __fixdfti for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+#ifdef CRT_HAS_128BIT
+
+// Returns: convert a to a signed long long, rounding toward zero.
+
+// Assumption: double is a IEEE 64 bit floating point type 
+//             su_int is a 32 bit integral type
+//             value in double is representable in ti_int (no range checking performed)
+
+// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
+
+ti_int __fixdfti(double a);
+
+int test__fixdfti(double a, ti_int expected)
+{
+    ti_int x = __fixdfti(a);
+    if (x != expected)
+    {
+        twords xt;
+        xt.all = x;
+        twords expectedt;
+        expectedt.all = expected;
+        printf("error in __fixdfti(%A) = 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(ti_int) == 2*sizeof(di_int)] = {0};
+char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
+char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
+
+#endif
+
+int main()
+{
+#ifdef CRT_HAS_128BIT
+    if (test__fixdfti(0.0, 0))
+        return 1;
+
+    if (test__fixdfti(0.5, 0))
+        return 1;
+    if (test__fixdfti(0.99, 0))
+        return 1;
+    if (test__fixdfti(1.0, 1))
+        return 1;
+    if (test__fixdfti(1.5, 1))
+        return 1;
+    if (test__fixdfti(1.99, 1))
+        return 1;
+    if (test__fixdfti(2.0, 2))
+        return 1;
+    if (test__fixdfti(2.01, 2))
+        return 1;
+    if (test__fixdfti(-0.5, 0))
+        return 1;
+    if (test__fixdfti(-0.99, 0))
+        return 1;
+    if (test__fixdfti(-1.0, -1))
+        return 1;
+    if (test__fixdfti(-1.5, -1))
+        return 1;
+    if (test__fixdfti(-1.99, -1))
+        return 1;
+    if (test__fixdfti(-2.0, -2))
+        return 1;
+    if (test__fixdfti(-2.01, -2))
+        return 1;
+
+    if (test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
+        return 1;
+    if (test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
+        return 1;
+
+    if (test__fixdfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
+                                               0x8000008000000000LL)))
+        return 1;
+    if (test__fixdfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
+                                               0x8000010000000000LL)))
+        return 1;
+
+    if (test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
+        return 1;
+    if (test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
+        return 1;
+
+    if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
+                                                      0x8000000000000400LL)))
+        return 1;
+    if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
+                                                      0x8000000000000800LL)))
+        return 1;
+
+    if (test__fixdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0)))
+        return 1;
+    if (test__fixdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0)))
+        return 1;
+
+    if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, make_ti(0x8000000000000400LL, 0)))
+        return 1;
+    if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, make_ti(0x8000000000000800LL, 0)))
+        return 1;
+
+#else
+    printf("skipped\n");
+#endif
+   return 0;
+}