| 1 | // RUN: %clang_builtins %s %librt -o %t && %run %t |
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| 2 | // REQUIRES: librt_has_truncdfhf2 |
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| 3 | |
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| 4 | #include <stdio.h> |
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| 5 | |
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| 6 | #include "fp_test.h" |
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| 7 | |
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| 8 | TYPE_FP16 __truncdfhf2(double a); |
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| 9 | |
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| 10 | int test__truncdfhf2(double a, uint16_t expected) |
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| 11 | { |
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| 12 | TYPE_FP16 x = __truncdfhf2(a); |
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| 13 | int ret = compareResultH(result: x, expected); |
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| 14 | |
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| 15 | if (ret){ |
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| 16 | printf(format: "error in test__truncdfhf2(%lf) = %#.4x, " |
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| 17 | "expected %#.4x\n" , a, toRep16(x), expected); |
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| 18 | } |
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| 19 | return ret; |
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| 20 | } |
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| 21 | |
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| 22 | char assumption_1[sizeof(TYPE_FP16) * CHAR_BIT == 16] = {0}; |
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| 23 | |
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| 24 | int main() |
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| 25 | { |
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| 26 | // qNaN |
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| 27 | if (test__truncdfhf2(a: makeQNaN64(), |
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| 28 | UINT16_C(0x7e00))) |
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| 29 | return 1; |
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| 30 | // NaN |
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| 31 | if (test__truncdfhf2(a: makeNaN64(UINT64_C(0x8000)), |
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| 32 | UINT16_C(0x7e00))) |
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| 33 | return 1; |
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| 34 | // inf |
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| 35 | if (test__truncdfhf2(a: makeInf64(), |
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| 36 | UINT16_C(0x7c00))) |
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| 37 | return 1; |
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| 38 | if (test__truncdfhf2(a: -makeInf64(), |
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| 39 | UINT16_C(0xfc00))) |
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| 40 | return 1; |
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| 41 | // zero |
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| 42 | if (test__truncdfhf2(a: 0.0, UINT16_C(0x0))) |
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| 43 | return 1; |
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| 44 | if (test__truncdfhf2(a: -0.0, UINT16_C(0x8000))) |
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| 45 | return 1; |
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| 46 | |
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| 47 | if (test__truncdfhf2(a: 3.1415926535, |
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| 48 | UINT16_C(0x4248))) |
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| 49 | return 1; |
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| 50 | if (test__truncdfhf2(a: -3.1415926535, |
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| 51 | UINT16_C(0xc248))) |
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| 52 | return 1; |
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| 53 | if (test__truncdfhf2(a: 0x1.987124876876324p+1000, |
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| 54 | UINT16_C(0x7c00))) |
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| 55 | return 1; |
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| 56 | if (test__truncdfhf2(a: 0x1.987124876876324p+12, |
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| 57 | UINT16_C(0x6e62))) |
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| 58 | return 1; |
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| 59 | if (test__truncdfhf2(a: 0x1.0p+0, |
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| 60 | UINT16_C(0x3c00))) |
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| 61 | return 1; |
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| 62 | if (test__truncdfhf2(a: 0x1.0p-14, |
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| 63 | UINT16_C(0x0400))) |
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| 64 | return 1; |
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| 65 | // denormal |
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| 66 | if (test__truncdfhf2(a: 0x1.0p-20, |
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| 67 | UINT16_C(0x0010))) |
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| 68 | return 1; |
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| 69 | if (test__truncdfhf2(a: 0x1.0p-24, |
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| 70 | UINT16_C(0x0001))) |
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| 71 | return 1; |
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| 72 | if (test__truncdfhf2(a: -0x1.0p-24, |
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| 73 | UINT16_C(0x8001))) |
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| 74 | return 1; |
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| 75 | if (test__truncdfhf2(a: 0x1.5p-25, |
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| 76 | UINT16_C(0x0001))) |
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| 77 | return 1; |
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| 78 | // and back to zero |
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| 79 | if (test__truncdfhf2(a: 0x1.0p-25, |
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| 80 | UINT16_C(0x0000))) |
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| 81 | return 1; |
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| 82 | if (test__truncdfhf2(a: -0x1.0p-25, |
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| 83 | UINT16_C(0x8000))) |
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| 84 | return 1; |
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| 85 | // max (precise) |
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| 86 | if (test__truncdfhf2(a: 65504.0, |
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| 87 | UINT16_C(0x7bff))) |
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| 88 | return 1; |
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| 89 | // max (rounded) |
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| 90 | if (test__truncdfhf2(a: 65519.0, |
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| 91 | UINT16_C(0x7bff))) |
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| 92 | return 1; |
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| 93 | // max (to +inf) |
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| 94 | if (test__truncdfhf2(a: 65520.0, |
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| 95 | UINT16_C(0x7c00))) |
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| 96 | return 1; |
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| 97 | if (test__truncdfhf2(a: -65520.0, |
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| 98 | UINT16_C(0xfc00))) |
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| 99 | return 1; |
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| 100 | if (test__truncdfhf2(a: 65536.0, |
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| 101 | UINT16_C(0x7c00))) |
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| 102 | return 1; |
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| 103 | return 0; |
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| 104 | } |
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| 105 | |
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