1 files changed, 96 insertions, 0 deletions
diff --git a/test/builtins/Unit/floatundisf_test.c b/test/builtins/Unit/floatundisf_test.c
new file mode 100644
index 000000000000..394c945a3919
--- /dev/null
+++ b/test/builtins/Unit/floatundisf_test.c
@@ -0,0 +1,96 @@
+//===-- floatundisf_test.c - Test __floatundisf ---------------------------===//
+//
+//                     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 __floatundisf for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <float.h>
+#include <stdio.h>
+
+// Returns: convert a to a float, rounding toward even.
+
+// Assumption: float is a IEEE 32 bit floating point type 
+//             du_int is a 64 bit integral type
+
+// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
+
+float __floatundisf(du_int a);
+
+int test__floatundisf(du_int a, float expected)
+{
+    float x = __floatundisf(a);
+    if (x != expected)
+        printf("error in __floatundisf(%llX) = %a, expected %a\n",
+               a, x, expected);
+    return x != expected;
+}
+
+char assumption_1[sizeof(du_int) == 2*sizeof(si_int)] = {0};
+char assumption_2[sizeof(du_int)*CHAR_BIT == 64] = {0};
+char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
+
+int main()
+{
+    if (test__floatundisf(0, 0.0F))
+        return 1;
+
+    if (test__floatundisf(1, 1.0F))
+        return 1;
+    if (test__floatundisf(2, 2.0F))
+        return 1;
+
+    if (test__floatundisf(0x7FFFFF8000000000ULL, 0x1.FFFFFEp+62F))
+        return 1;
+    if (test__floatundisf(0x7FFFFF0000000000ULL, 0x1.FFFFFCp+62F))
+        return 1;
+
+    if (test__floatundisf(0x8000008000000000ULL, 0x1p+63F))
+        return 1;
+    if (test__floatundisf(0x8000010000000000LL, 0x1.000002p+63F))
+        return 1;
+
+    if (test__floatundisf(0x8000000000000000LL, 0x1p+63F))
+        return 1;
+    if (test__floatundisf(0x8000000000000001LL, 0x1p+63F))
+        return 1;
+
+    if (test__floatundisf(0xFFFFFFFFFFFFFFFELL, 0x1p+64F))
+        return 1;
+    if (test__floatundisf(0xFFFFFFFFFFFFFFFFLL, 0x1p+64F))
+        return 1;
+
+    if (test__floatundisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+
+    if (test__floatundisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
+        return 1;
+
+    if (test__floatundisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floatundisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
+        return 1;
+
+   return 0;
+}