forked from OSchip/llvm-project
117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
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//===--------------- truncdfhf2_test.c - Test __truncdfhf2 ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file tests __truncdfhf2 for the compiler_rt library.
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//
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//===----------------------------------------------------------------------===//
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#include <stdio.h>
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#include "fp_test.h"
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uint16_t __truncdfhf2(double a);
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int test__truncdfhf2(double a, uint16_t expected)
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{
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uint16_t x = __truncdfhf2(a);
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int ret = compareResultH(x, expected);
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if (ret){
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printf("error in test__truncdfhf2(%f) = %#.4x, "
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"expected %#.4x\n", a, x, fromRep16(expected));
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}
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return ret;
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}
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char assumption_1[sizeof(__fp16) * CHAR_BIT == 16] = {0};
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int main()
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{
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// qNaN
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if (test__truncdfhf2(makeQNaN64(),
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UINT16_C(0x7e00)))
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return 1;
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// NaN
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if (test__truncdfhf2(makeNaN64(UINT64_C(0x8000)),
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UINT16_C(0x7e00)))
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return 1;
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// inf
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if (test__truncdfhf2(makeInf64(),
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UINT16_C(0x7c00)))
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return 1;
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if (test__truncdfhf2(-makeInf64(),
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UINT16_C(0xfc00)))
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return 1;
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// zero
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if (test__truncdfhf2(0.0, UINT16_C(0x0)))
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return 1;
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if (test__truncdfhf2(-0.0, UINT16_C(0x8000)))
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return 1;
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if (test__truncdfhf2(3.1415926535,
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UINT16_C(0x4248)))
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return 1;
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if (test__truncdfhf2(-3.1415926535,
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UINT16_C(0xc248)))
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return 1;
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if (test__truncdfhf2(0x1.987124876876324p+1000,
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UINT16_C(0x7c00)))
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return 1;
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if (test__truncdfhf2(0x1.987124876876324p+12,
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UINT16_C(0x6e62)))
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return 1;
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if (test__truncdfhf2(0x1.0p+0,
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UINT16_C(0x3c00)))
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return 1;
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if (test__truncdfhf2(0x1.0p-14,
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UINT16_C(0x0400)))
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return 1;
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// denormal
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if (test__truncdfhf2(0x1.0p-20,
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UINT16_C(0x0010)))
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return 1;
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if (test__truncdfhf2(0x1.0p-24,
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UINT16_C(0x0001)))
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return 1;
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if (test__truncdfhf2(-0x1.0p-24,
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UINT16_C(0x8001)))
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return 1;
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if (test__truncdfhf2(0x1.5p-25,
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UINT16_C(0x0001)))
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return 1;
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// and back to zero
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if (test__truncdfhf2(0x1.0p-25,
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UINT16_C(0x0000)))
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return 1;
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if (test__truncdfhf2(-0x1.0p-25,
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UINT16_C(0x8000)))
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return 1;
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// max (precise)
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if (test__truncdfhf2(65504.0,
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UINT16_C(0x7bff)))
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return 1;
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// max (rounded)
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if (test__truncdfhf2(65519.0,
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UINT16_C(0x7bff)))
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return 1;
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// max (to +inf)
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if (test__truncdfhf2(65520.0,
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UINT16_C(0x7c00)))
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return 1;
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if (test__truncdfhf2(-65520.0,
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UINT16_C(0xfc00)))
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return 1;
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if (test__truncdfhf2(65536.0,
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UINT16_C(0x7c00)))
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return 1;
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return 0;
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}
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