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-rw-r--r--test/builtins/Unit/truncdfhf2_test.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/test/builtins/Unit/truncdfhf2_test.c b/test/builtins/Unit/truncdfhf2_test.c
new file mode 100644
index 000000000000..6627a001eab8
--- /dev/null
+++ b/test/builtins/Unit/truncdfhf2_test.c
@@ -0,0 +1,114 @@
+//===--------------- truncdfhf2_test.c - Test __truncdfhf2 ----------------===//
+//
+// 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 __truncdfhf2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+
+#include "fp_test.h"
+
+uint16_t __truncdfhf2(double a);
+
+int test__truncdfhf2(double a, uint16_t expected)
+{
+ uint16_t x = __truncdfhf2(a);
+ int ret = compareResultH(x, expected);
+
+ if (ret){
+ printf("error in test__truncdfhf2(%f) = %#.4x, "
+ "expected %#.4x\n", a, x, fromRep16(expected));
+ }
+ return ret;
+}
+
+char assumption_1[sizeof(__fp16) * CHAR_BIT == 16] = {0};
+
+int main()
+{
+ // qNaN
+ if (test__truncdfhf2(makeQNaN64(),
+ UINT16_C(0x7e00)))
+ return 1;
+ // NaN
+ if (test__truncdfhf2(makeNaN64(UINT64_C(0x8000)),
+ UINT16_C(0x7e00)))
+ return 1;
+ // inf
+ if (test__truncdfhf2(makeInf64(),
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__truncdfhf2(-makeInf64(),
+ UINT16_C(0xfc00)))
+ return 1;
+ // zero
+ if (test__truncdfhf2(0.0, UINT16_C(0x0)))
+ return 1;
+ if (test__truncdfhf2(-0.0, UINT16_C(0x8000)))
+ return 1;
+
+ if (test__truncdfhf2(3.1415926535,
+ UINT16_C(0x4248)))
+ return 1;
+ if (test__truncdfhf2(-3.1415926535,
+ UINT16_C(0xc248)))
+ return 1;
+ if (test__truncdfhf2(0x1.987124876876324p+1000,
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__truncdfhf2(0x1.987124876876324p+12,
+ UINT16_C(0x6e62)))
+ return 1;
+ if (test__truncdfhf2(0x1.0p+0,
+ UINT16_C(0x3c00)))
+ return 1;
+ if (test__truncdfhf2(0x1.0p-14,
+ UINT16_C(0x0400)))
+ return 1;
+ // denormal
+ if (test__truncdfhf2(0x1.0p-20,
+ UINT16_C(0x0010)))
+ return 1;
+ if (test__truncdfhf2(0x1.0p-24,
+ UINT16_C(0x0001)))
+ return 1;
+ if (test__truncdfhf2(-0x1.0p-24,
+ UINT16_C(0x8001)))
+ return 1;
+ if (test__truncdfhf2(0x1.5p-25,
+ UINT16_C(0x0001)))
+ return 1;
+ // and back to zero
+ if (test__truncdfhf2(0x1.0p-25,
+ UINT16_C(0x0000)))
+ return 1;
+ if (test__truncdfhf2(-0x1.0p-25,
+ UINT16_C(0x8000)))
+ return 1;
+ // max (precise)
+ if (test__truncdfhf2(65504.0,
+ UINT16_C(0x7bff)))
+ return 1;
+ // max (rounded)
+ if (test__truncdfhf2(65519.0,
+ UINT16_C(0x7bff)))
+ return 1;
+ // max (to +inf)
+ if (test__truncdfhf2(65520.0,
+ UINT16_C(0x7c00)))
+ return 1;
+ if (test__truncdfhf2(-65520.0,
+ UINT16_C(0xfc00)))
+ return 1;
+ if (test__truncdfhf2(65536.0,
+ UINT16_C(0x7c00)))
+ return 1;
+ return 0;
+}