1 files changed, 69 insertions, 0 deletions
diff --git a/test/builtins/Unit/floatditf_test.c b/test/builtins/Unit/floatditf_test.c
new file mode 100644
index 000000000000..8cf8a0859e68
--- /dev/null
+++ b/test/builtins/Unit/floatditf_test.c
@@ -0,0 +1,69 @@
+//===-- floatditf_test.c - Test __floatditf -------------------------------===//
+//
+//                     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 __floatditf for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <math.h>
+#include <complex.h>
+#include <stdio.h>
+
+#if __LDBL_MANT_DIG__ == 113
+
+#include "fp_test.h"
+
+// Returns: long integer converted to long double
+
+COMPILER_RT_ABI long double __floatditf(long long a);
+
+int test__floatditf(long long a, uint64_t expectedHi, uint64_t expectedLo)
+{
+    long double x = __floatditf(a);
+    int ret = compareResultLD(x, expectedHi, expectedLo);
+
+    if (ret)
+        printf("error in __floatditf(%Ld) = %.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
+    if (test__floatditf(0x7fffffffffffffff, UINT64_C(0x403dffffffffffff), UINT64_C(0xfffc000000000000)))
+        return 1;
+    if (test__floatditf(0x123456789abcdef1, UINT64_C(0x403b23456789abcd), UINT64_C(0xef10000000000000)))
+        return 1;
+    if (test__floatditf(0x2, UINT64_C(0x4000000000000000), UINT64_C(0x0)))
+        return 1;
+    if (test__floatditf(0x1, UINT64_C(0x3fff000000000000), UINT64_C(0x0)))
+        return 1;
+    if (test__floatditf(0x0, UINT64_C(0x0), UINT64_C(0x0)))
+        return 1;
+    if (test__floatditf(0xffffffffffffffff, UINT64_C(0xbfff000000000000), UINT64_C(0x0)))
+        return 1;
+    if (test__floatditf(0xfffffffffffffffe, UINT64_C(0xc000000000000000), UINT64_C(0x0)))
+        return 1;
+    if (test__floatditf(-0x123456789abcdef1, UINT64_C(0xc03b23456789abcd), UINT64_C(0xef10000000000000)))
+        return 1;
+    if (test__floatditf(0x8000000000000000, UINT64_C(0xc03e000000000000), UINT64_C(0x0)))
+        return 1;
+
+#else
+    printf("skipped\n");
+
+#endif
+    return 0;
+}