1 files changed, 82 insertions, 0 deletions
diff --git a/test/builtins/Unit/extenddftf2_test.c b/test/builtins/Unit/extenddftf2_test.c
new file mode 100644
index 000000000000..05acc08c0951
--- /dev/null
+++ b/test/builtins/Unit/extenddftf2_test.c
@@ -0,0 +1,82 @@
+//===--------------- extenddftf2_test.c - Test __extenddftf2 --------------===//
+//
+//                     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 __extenddftf2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+
+#if __LDBL_MANT_DIG__ == 113
+
+#include "fp_test.h"
+
+long double __extenddftf2(double a);
+
+int test__extenddftf2(double a, uint64_t expectedHi, uint64_t expectedLo)
+{
+    long double x = __extenddftf2(a);
+    int ret = compareResultLD(x, expectedHi, expectedLo);
+
+    if (ret){
+        printf("error in test__extenddftf2(%f) = %.20Lf, "
+               "expected %.20Lf\n", a, x, fromRep128(expectedHi, expectedLo));
+    }
+    return ret;
+}
+
+char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
+
+#endif
+
+int main()
+{
+#if __LDBL_MANT_DIG__ == 113
+    // qNaN
+    if (test__extenddftf2(makeQNaN64(),
+                          UINT64_C(0x7fff800000000000),
+                          UINT64_C(0x0)))
+        return 1;
+    // NaN
+    if (test__extenddftf2(makeNaN64(UINT64_C(0x7100000000000)),
+                          UINT64_C(0x7fff710000000000),
+                          UINT64_C(0x0)))
+        return 1;
+    // inf
+    if (test__extenddftf2(makeInf64(),
+                          UINT64_C(0x7fff000000000000),
+                          UINT64_C(0x0)))
+        return 1;
+    // zero
+    if (test__extenddftf2(0.0, UINT64_C(0x0), UINT64_C(0x0)))
+        return 1;
+
+    if (test__extenddftf2(0x1.23456789abcdefp+5,
+                          UINT64_C(0x400423456789abcd),
+                          UINT64_C(0xf000000000000000)))
+        return 1;
+    if (test__extenddftf2(0x1.edcba987654321fp-9,
+                          UINT64_C(0x3ff6edcba9876543),
+                          UINT64_C(0x2000000000000000)))
+        return 1;
+    if (test__extenddftf2(0x1.23456789abcdefp+45,
+                          UINT64_C(0x402c23456789abcd),
+                          UINT64_C(0xf000000000000000)))
+        return 1;
+    if (test__extenddftf2(0x1.edcba987654321fp-45,
+                          UINT64_C(0x3fd2edcba9876543),
+                          UINT64_C(0x2000000000000000)))
+        return 1;
+
+#else
+    printf("skipped\n");
+
+#endif
+    return 0;
+}