1 files changed, 105 insertions, 0 deletions
diff --git a/test/Unit/fixunsxfsi_test.c b/test/Unit/fixunsxfsi_test.c
new file mode 100644
index 0000000..0353b6b
--- /dev/null
+++ b/test/Unit/fixunsxfsi_test.c
@@ -0,0 +1,105 @@
+//===-- fixunsxfsi_test.c - Test __fixunsxfsi -----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __fixunsxfsi for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+#if HAS_80_BIT_LONG_DOUBLE
+// Returns: convert a to a unsigned int, rounding toward zero.
+//          Negative values all become zero.
+
+// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
+//             su_int is a 32 bit integral type
+//             value in long double is representable in su_int or is negative 
+//                 (no range checking performed)
+
+// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
+// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
+
+su_int __fixunsxfsi(long double a);
+
+int test__fixunsxfsi(long double a, su_int expected)
+{
+    su_int x = __fixunsxfsi(a);
+    if (x != expected)
+        printf("error in __fixunsxfsi(%LA) = %X, expected %X\n", a, x, expected);
+    return x != expected;
+}
+
+char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
+char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
+#endif
+
+int main()
+{
+#if HAS_80_BIT_LONG_DOUBLE
+    if (test__fixunsxfsi(0.0, 0))
+        return 1;
+
+    if (test__fixunsxfsi(0.5, 0))
+        return 1;
+    if (test__fixunsxfsi(0.99, 0))
+        return 1;
+    if (test__fixunsxfsi(1.0, 1))
+        return 1;
+    if (test__fixunsxfsi(1.5, 1))
+        return 1;
+    if (test__fixunsxfsi(1.99, 1))
+        return 1;
+    if (test__fixunsxfsi(2.0, 2))
+        return 1;
+    if (test__fixunsxfsi(2.01, 2))
+        return 1;
+    if (test__fixunsxfsi(-0.5, 0))
+        return 1;
+    if (test__fixunsxfsi(-0.99, 0))
+        return 1;
+#if !TARGET_LIBGCC
+    if (test__fixunsxfsi(-1.0, 0))  // libgcc ignores "returns 0 for negative input" spec
+        return 1;
+    if (test__fixunsxfsi(-1.5, 0))
+        return 1;
+    if (test__fixunsxfsi(-1.99, 0))
+        return 1;
+    if (test__fixunsxfsi(-2.0, 0))
+        return 1;
+    if (test__fixunsxfsi(-2.01, 0))
+        return 1;
+#endif
+
+    if (test__fixunsxfsi(0x1.000000p+31, 0x80000000))
+        return 1;
+    if (test__fixunsxfsi(0x1.FFFFFEp+31, 0xFFFFFF00))
+        return 1;
+    if (test__fixunsxfsi(0x1.FFFFFEp+30, 0x7FFFFF80))
+        return 1;
+    if (test__fixunsxfsi(0x1.FFFFFCp+30, 0x7FFFFF00))
+        return 1;
+
+#if !TARGET_LIBGCC
+    if (test__fixunsxfsi(-0x1.FFFFFEp+30, 0))
+        return 1;
+    if (test__fixunsxfsi(-0x1.FFFFFCp+30, 0))
+        return 1;
+#endif
+
+    if (test__fixunsxfsi(0x1.FFFFFFFEp+31, 0xFFFFFFFF))
+        return 1;
+    if (test__fixunsxfsi(0x1.FFFFFFFC00000p+30, 0x7FFFFFFF))
+        return 1;
+    if (test__fixunsxfsi(0x1.FFFFFFF800000p+30, 0x7FFFFFFE))
+        return 1;
+
+#endif
+   return 0;
+}