1 files changed, 100 insertions, 0 deletions
diff --git a/test/Unit/fixunsdfsi_test.c b/test/Unit/fixunsdfsi_test.c
new file mode 100644
index 000000000..9e6b95d55
--- /dev/null
+++ b/test/Unit/fixunsdfsi_test.c
@@ -0,0 +1,100 @@
+//===-- fixunsdfsi_test.c - Test __fixunsdfsi -----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __fixunsdfsi for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: convert a to a unsigned int, rounding toward zero.
+//          Negative values all become 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 su_int or is negative 
+//                 (no range checking performed)
+
+// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
+
+su_int __fixunsdfsi(double a);
+
+int test__fixunsdfsi(double a, su_int expected)
+{
+    su_int x = __fixunsdfsi(a);
+    if (x != expected)
+        printf("error in __fixunsdfsi(%A) = %X, expected %X\n", a, x, expected);
+    return x != expected;
+}
+
+char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
+char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
+
+int main()
+{
+    if (test__fixunsdfsi(0.0, 0))
+        return 1;
+
+    if (test__fixunsdfsi(0.5, 0))
+        return 1;
+    if (test__fixunsdfsi(0.99, 0))
+        return 1;
+    if (test__fixunsdfsi(1.0, 1))
+        return 1;
+    if (test__fixunsdfsi(1.5, 1))
+        return 1;
+    if (test__fixunsdfsi(1.99, 1))
+        return 1;
+    if (test__fixunsdfsi(2.0, 2))
+        return 1;
+    if (test__fixunsdfsi(2.01, 2))
+        return 1;
+    if (test__fixunsdfsi(-0.5, 0))
+        return 1;
+    if (test__fixunsdfsi(-0.99, 0))
+        return 1;
+#if !TARGET_LIBGCC
+    if (test__fixunsdfsi(-1.0, 0))  // libgcc ignores "returns 0 for negative input" spec
+        return 1;
+    if (test__fixunsdfsi(-1.5, 0))
+        return 1;
+    if (test__fixunsdfsi(-1.99, 0))
+        return 1;
+    if (test__fixunsdfsi(-2.0, 0))
+        return 1;
+    if (test__fixunsdfsi(-2.01, 0))
+        return 1;
+#endif
+
+    if (test__fixunsdfsi(0x1.000000p+31, 0x80000000))
+        return 1;
+    if (test__fixunsdfsi(0x1.FFFFFEp+31, 0xFFFFFF00))
+        return 1;
+    if (test__fixunsdfsi(0x1.FFFFFEp+30, 0x7FFFFF80))
+        return 1;
+    if (test__fixunsdfsi(0x1.FFFFFCp+30, 0x7FFFFF00))
+        return 1;
+
+#if !TARGET_LIBGCC
+    if (test__fixunsdfsi(-0x1.FFFFFEp+30, 0))
+        return 1;
+    if (test__fixunsdfsi(-0x1.FFFFFCp+30, 0))
+        return 1;
+#endif
+
+    if (test__fixunsdfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF))
+        return 1;
+    if (test__fixunsdfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF))
+        return 1;
+    if (test__fixunsdfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE))
+        return 1;
+
+   return 0;
+}