1 files changed, 134 insertions, 0 deletions
diff --git a/test/Unit/floattisf_test.c b/test/Unit/floattisf_test.c
new file mode 100644
index 000000000..403dd6104
--- /dev/null
+++ b/test/Unit/floattisf_test.c
@@ -0,0 +1,134 @@
+//===-- floattisf_test.c - Test __floattisf -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __floattisf for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#if __x86_64
+
+#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 
+//             ti_int is a 64 bit integral type
+
+// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
+
+float __floattisf(ti_int a);
+
+int test__floattisf(ti_int a, float expected)
+{
+    float x = __floattisf(a);
+    if (x != expected)
+    {
+        twords at;
+        at.all = a;
+        printf("error in __floattisf(0x%.16llX%.16llX) = %a, expected %a\n",
+               at.high, at.low, x, expected);
+    }
+    return x != expected;
+}
+
+char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
+char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
+char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
+
+#endif
+
+int main()
+{
+#if __x86_64
+    if (test__floattisf(0, 0.0F))
+        return 1;
+
+    if (test__floattisf(1, 1.0F))
+        return 1;
+    if (test__floattisf(2, 2.0F))
+        return 1;
+    if (test__floattisf(-1, -1.0F))
+        return 1;
+    if (test__floattisf(-2, -2.0F))
+        return 1;
+
+    if (test__floattisf(0x7FFFFF8000000000LL, 0x1.FFFFFEp+62F))
+        return 1;
+    if (test__floattisf(0x7FFFFF0000000000LL, 0x1.FFFFFCp+62F))
+        return 1;
+
+    if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000008000000000LL),
+                        -0x1.FFFFFEp+62F))
+        return 1;
+    if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000010000000000LL),
+                        -0x1.FFFFFCp+62F))
+        return 1;
+
+    if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000000LL),
+                        -0x1.000000p+63F))
+        return 1;
+    if (test__floattisf(make_ti(0xFFFFFFFFFFFFFFFFLL, 0x8000000000000001LL),
+                        -0x1.000000p+63F))
+        return 1;
+
+    if (test__floattisf(0x0007FB72E8000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+
+    if (test__floattisf(0x0007FB72EA000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72EB000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72EBFFFFFFLL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72EC000000LL, 0x1.FEDCBCp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72E8000001LL, 0x1.FEDCBAp+50F))
+        return 1;
+
+    if (test__floattisf(0x0007FB72E6000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72E7000000LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72E7FFFFFFLL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72E4000001LL, 0x1.FEDCBAp+50F))
+        return 1;
+    if (test__floattisf(0x0007FB72E4000000LL, 0x1.FEDCB8p+50F))
+        return 1;
+
+    if (test__floattisf(make_ti(0x0007FB72E8000000LL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+
+    if (test__floattisf(make_ti(0x0007FB72EA000000LL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72EB000000LL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72EBFFFFFFLL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72EC000000LL, 0), 0x1.FEDCBCp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72E8000001LL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+
+    if (test__floattisf(make_ti(0x0007FB72E6000000LL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72E7000000LL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72E7FFFFFFLL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72E4000001LL, 0), 0x1.FEDCBAp+114F))
+        return 1;
+    if (test__floattisf(make_ti(0x0007FB72E4000000LL, 0), 0x1.FEDCB8p+114F))
+        return 1;
+
+#endif
+   return 0;
+}