From b3a6901e66f55b35aa9e01bcb24134e6a65ea004 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Fri, 26 Jun 2009 16:47:03 +0000
Subject: Initial import of compiler-rt.  -

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@74292 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Unit/fixunsdfti_test.c | 128 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 test/Unit/fixunsdfti_test.c

(limited to 'test/Unit/fixunsdfti_test.c')

diff --git a/test/Unit/fixunsdfti_test.c b/test/Unit/fixunsdfti_test.c
new file mode 100644
index 000000000..24452b348
--- /dev/null
+++ b/test/Unit/fixunsdfti_test.c
@@ -0,0 +1,128 @@
+//===-- fixunsdfti_test.c - Test __fixunsdfti -----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __fixunsdfti for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: convert a to a unsigned long long, rounding toward zero.
+//          Negative values all become zero.
+
+// Assumption: double is a IEEE 64 bit floating point type 
+//             tu_int is a 64 bit integral type
+//             value in double is representable in tu_int or is negative 
+//                 (no range checking performed)
+
+// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
+
+#if __x86_64
+
+tu_int __fixunsdfti(double a);
+
+int test__fixunsdfti(double a, tu_int expected)
+{
+    tu_int x = __fixunsdfti(a);
+    if (x != expected)
+    {
+        utwords xt;
+        xt.all = x;
+        utwords expectedt;
+        expectedt.all = expected;
+        printf("error in __fixunsdfti(%A) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
+               a, xt.high, xt.low, expectedt.high, expectedt.low);
+    }
+    return x != expected;
+}
+
+char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
+char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
+char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
+
+#endif
+
+int main()
+{
+#if __x86_64
+    if (test__fixunsdfti(0.0, 0))
+        return 1;
+
+    if (test__fixunsdfti(0.5, 0))
+        return 1;
+    if (test__fixunsdfti(0.99, 0))
+        return 1;
+    if (test__fixunsdfti(1.0, 1))
+        return 1;
+    if (test__fixunsdfti(1.5, 1))
+        return 1;
+    if (test__fixunsdfti(1.99, 1))
+        return 1;
+    if (test__fixunsdfti(2.0, 2))
+        return 1;
+    if (test__fixunsdfti(2.01, 2))
+        return 1;
+    if (test__fixunsdfti(-0.5, 0))
+        return 1;
+    if (test__fixunsdfti(-0.99, 0))
+        return 1;
+#if !TARGET_LIBGCC
+    if (test__fixunsdfti(-1.0, 0))  // libgcc ignores "returns 0 for negative input" spec
+        return 1;
+    if (test__fixunsdfti(-1.5, 0))
+        return 1;
+    if (test__fixunsdfti(-1.99, 0))
+        return 1;
+    if (test__fixunsdfti(-2.0, 0))
+        return 1;
+    if (test__fixunsdfti(-2.01, 0))
+        return 1;
+#endif
+
+    if (test__fixunsdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
+        return 1;
+    if (test__fixunsdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
+        return 1;
+
+#if !TARGET_LIBGCC
+    if (test__fixunsdfti(-0x1.FFFFFEp+62, 0))
+        return 1;
+    if (test__fixunsdfti(-0x1.FFFFFCp+62, 0))
+        return 1;
+#endif
+
+    if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800LL))
+        return 1;
+    if (test__fixunsdfti(0x1.0000000000000p+63, 0x8000000000000000LL))
+        return 1;
+    if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
+        return 1;
+    if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
+        return 1;
+
+    if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+127, make_ti(0xFFFFFFFFFFFFF800LL, 0)))
+        return 1;
+    if (test__fixunsdfti(0x1.0000000000000p+127, make_ti(0x8000000000000000LL, 0)))
+        return 1;
+    if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0)))
+        return 1;
+    if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0)))
+        return 1;
+
+#if !TARGET_LIBGCC
+    if (test__fixunsdfti(-0x1.FFFFFFFFFFFFFp+62, 0))
+        return 1;
+    if (test__fixunsdfti(-0x1.FFFFFFFFFFFFEp+62, 0))
+        return 1;
+#endif
+
+#endif
+   return 0;
+}
-- 
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